diff --git a/debug/log.hpp b/debug/log.hpp
index 3b69a50fa..23094a46d 100644
--- a/debug/log.hpp
+++ b/debug/log.hpp
@@ -14,7 +14,6 @@ class Log
 public:
     enum class Level : std::uint_fast8_t { Debug, Info, Warn, Error };
 
-private:
     struct Message
     {
         std::chrono::system_clock::time_point time;
diff --git a/demo/__init__.py b/demo/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/demo/config/__init__.py b/demo/config/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/demo/config/config.py b/demo/config/config.py
new file mode 100644
index 000000000..c8ec8c72a
--- /dev/null
+++ b/demo/config/config.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+
+import json
+from util import get_env, set_modul_attrs
+
+host = "0.0.0.0"
+
+port = 5000
+
+log_level = 'INFO'
+
+try:
+    set_modul_attrs(__name__, json.loads(get_env('CONFIG')))
+except:
+    pass
diff --git a/demo/demo_server_init.py b/demo/demo_server_init.py
index 6f1932824..c13b60138 100644
--- a/demo/demo_server_init.py
+++ b/demo/demo_server_init.py
@@ -7,24 +7,13 @@ via the MEMGRAPH_DEMO environtment variable. Available environments
 are: debug, prod.
 '''
 
-import os
 import logging
 
+from util import get_env
 from simulation.web_server import SimulationWebServer
 
-
-def fetch_env(env_name, default=None):
-    '''
-    Fetches environment variable.
-    '''
-    if env_name in os.environ:
-        return os.environ[env_name]
-
-    return default
-
-
-environment = fetch_env('MEMGRAPH_DEMO', 'debug')
-wsgi = fetch_env('MEMGRAPH_DEMO_WSGI', 'werkzeug')
+environment = get_env('MEMGRAPH_DEMO', 'debug')
+wsgi = get_env('MEMGRAPH_DEMO_WSGI', 'werkzeug')
 
 
 def _init():
diff --git a/demo/service_init.py b/demo/service_init.py
new file mode 100644
index 000000000..56389c275
--- /dev/null
+++ b/demo/service_init.py
@@ -0,0 +1,7 @@
+# -*- coding: UTF-8 -*-
+
+#   TODO init object by module name
+
+# something like
+# module_name, class_name = module_class_string.rsplit(".", 1)
+# return getattr(importlib.import_module(module_name), class_name)()
diff --git a/demo/simulation/static/cypher/.gitattributes b/demo/static/cypher/.gitattributes
similarity index 100%
rename from demo/simulation/static/cypher/.gitattributes
rename to demo/static/cypher/.gitattributes
diff --git a/demo/simulation/static/cypher/.gitignore b/demo/static/cypher/.gitignore
similarity index 100%
rename from demo/simulation/static/cypher/.gitignore
rename to demo/static/cypher/.gitignore
diff --git a/demo/simulation/static/cypher/.npmignore b/demo/static/cypher/.npmignore
similarity index 100%
rename from demo/simulation/static/cypher/.npmignore
rename to demo/static/cypher/.npmignore
diff --git a/demo/simulation/static/cypher/.travis.yml b/demo/static/cypher/.travis.yml
similarity index 100%
rename from demo/simulation/static/cypher/.travis.yml
rename to demo/static/cypher/.travis.yml
diff --git a/demo/simulation/static/cypher/codemirror.css b/demo/static/cypher/codemirror.css
similarity index 100%
rename from demo/simulation/static/cypher/codemirror.css
rename to demo/static/cypher/codemirror.css
diff --git a/demo/simulation/static/cypher/codemirror.js b/demo/static/cypher/codemirror.js
similarity index 100%
rename from demo/simulation/static/cypher/codemirror.js
rename to demo/static/cypher/codemirror.js
diff --git a/demo/simulation/static/cypher/cypher.js b/demo/static/cypher/cypher.js
similarity index 100%
rename from demo/simulation/static/cypher/cypher.js
rename to demo/static/cypher/cypher.js
diff --git a/demo/simulation/static/cypher/neo.css b/demo/static/cypher/neo.css
similarity index 100%
rename from demo/simulation/static/cypher/neo.css
rename to demo/static/cypher/neo.css
diff --git a/demo/simulation/static/demo.css b/demo/static/demo.css
similarity index 100%
rename from demo/simulation/static/demo.css
rename to demo/static/demo.css
diff --git a/demo/simulation/static/demo.html b/demo/static/demo.html
similarity index 99%
rename from demo/simulation/static/demo.html
rename to demo/static/demo.html
index 3898bed09..b2d9c8492 100644
--- a/demo/simulation/static/demo.html
+++ b/demo/static/demo.html
@@ -96,7 +96,7 @@
     </div>
 
     <!-- the graph -->
-    <div class="col s8">
+    <div class="col s10">
       <div class="card">
         <div class="card-content">
           <div id="chart" style="height: 750px;">
@@ -107,6 +107,7 @@
     </div>
 
     <!-- memgraph cards -->
+    <!--
     <div class="col s2">
       <div id="q-1-0" class="card">
         <div class="qps valign-wrapper">
@@ -169,6 +170,7 @@
         <textarea id="query">MATCH (n:Person) RETURN n</textarea>
       </div>
     </div>
+    -->
   </div>
 
   <script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
diff --git a/demo/simulation/static/demo.js b/demo/static/demo.js
similarity index 71%
rename from demo/simulation/static/demo.js
rename to demo/static/demo.js
index 85b1d508e..77aceefdd 100644
--- a/demo/simulation/static/demo.js
+++ b/demo/static/demo.js
@@ -100,6 +100,7 @@
     }
   }
 
+  // put \n on module 2 space positions
   var put_new_line_mod_2 = function(array) {
     let join_array = array.map(function(o, i) {
       if (i % 2 == 0)
@@ -115,6 +116,13 @@
     });
   };
 
+  // --  variable part  ----
+  let running = false;
+  let value = 0;
+  let maxQps = 10000;
+  let cards = [];
+  let line = [];
+  let sec = 0;
   var queries = [
     "CREATE (n{id:@}) RETURN n",
     "MATCH (n{id:#}),(m{id:#}) CREATE (n)-[r:test]->(m) RETURN r",
@@ -122,47 +130,86 @@
     "MATCH (n{id:#}) RETURN n",
     "MATCH (n{id:#})-[r]->(m) RETURN count(r)"
   ];
+  var params = {
+    host: "localhost",
+    port: "7474",
+    connections: 16,
+    duration: 1,
+    queries: queries
+  };
+  // -----------------------
 
+  // server control functions
+  var start = function() {
+    $.ajax({url:'/start', type:"POST", success: function(data){}});
+  };
+  var stop = function() {
+    $.ajax({url:'/stop', type:"POST", success: function(data){}});
+  };
+  var registerParams = function() {
+    $.ajax({
+      url:'/params', type:"POST", data:JSON.stringify(params),
+      contentType:"application/json; charset=utf-8",
+      success: function(data){
+      }
+    });
+  };
+  registerParams();
+
+  // setup cards
+  queries.forEach(function(query, i) {
+    query = put_new_line_mod_2(query.split(" ")).join('');
+    cards.push(new QueryCard($('#q-0-' + i.toString())[0], maxQps));
+    cards[i].set_query(query);
+  });
+
+  // start stop button
   $("#running-button").click(function() {
     running = !running;
     if (running) {
       $(this).text('STOP');
-      run();
-      updateGraph();
+      start(); 
+      update();
     }
-    if (!running)
+    if (!running) {
       $(this).text('START');
+      stop();
+      // sec = 0;
+      // line = [];
+    }
   });
+ 
+  // update only line on the graph 
+  var updateGraph = function() {
+      let newData = [{
+        values: line,
+        key: 'QPS',
+        color: '#ff0000'
+      }];
+      chartData.datum(newData).transition().duration(500).call(chart);
+  }
 
-  // counters init
-  let running = false;
-  let value = 0;
-  let maxQps = 15000;
-
-  // cards init
-  let neo4jCards = [];
-  let memgraphCards = [];
-  queries.forEach(function(query, i) {
-    query = put_new_line_mod_2(query.split(" ")).join('');
-    neo4jCards.push(new QueryCard($('#q-0-' + i.toString())[0], maxQps));
-    neo4jCards[i].set_query(query);
-    memgraphCards.push(new QueryCard($('#q-1-' + i.toString())[0], maxQps));
-    memgraphCards[i].set_query(query);
-  });
-
-  // cards update
-  function run() {
-    if (!running)
+  // update
+  function update() {
+    if (!running) {
+      stop();
       return;
+    }
     setTimeout(() => {
-      value += 10;
-      if(value >= maxQps)
-        value = 0;
-      queries.forEach(function(query, i) {
-        neo4jCards[i].set_value(Math.round(1000 + Math.random() * 3000));
-        memgraphCards[i].set_value(Math.round(7000 + Math.random() * 7000));
+      $.ajax({
+        url:'/stats', type:"GET",
+        success: function(data){
+          if (!data || !data.total || !data.per_query)
+            return
+          sec = sec + 1;
+          line.push({x: sec, y: data.total});
+          data.per_query.forEach(function(speed, i) {
+            cards[i].set_value(Math.round(speed));
+          });
+          updateGraph();
+        }
       });
-      run();
+      update();
     }, 1000);
   }
 
@@ -194,33 +241,4 @@
     return chart;
   });
 
-  // graph update
-  let x = 0;
-  function updateGraph() {
-    if (!running)
-      return;
-    setTimeout(() => {
-      x += 1;
-      if (x > 100)
-        x = 0
-      var memgraphLine = [];
-      var neo4jLine = [];
-      for (var i = 0; i < x; i++) {
-        memgraphLine.push({x: i, y: 100 * Math.random() + 1000});
-        neo4jLine.push({x: i, y: 100 * Math.random() + 50});
-      }
-      var newData = [{
-        values: memgraphLine,
-        key: 'Memgraph',
-        color: '#ff0000'
-      }, {
-        values: neo4jLine,
-        key: 'Neo4j',
-        color: '#0000ff'
-      }];
-      chartData.datum(newData).transition().duration(500).call(chart);
-      updateGraph();
-    }, 1000);
-  }
-
 })();
diff --git a/demo/simulation/static/sigmajs/captors/sigma.captors.mouse.js b/demo/static/sigmajs/captors/sigma.captors.mouse.js
similarity index 100%
rename from demo/simulation/static/sigmajs/captors/sigma.captors.mouse.js
rename to demo/static/sigmajs/captors/sigma.captors.mouse.js
diff --git a/demo/simulation/static/sigmajs/captors/sigma.captors.touch.js b/demo/static/sigmajs/captors/sigma.captors.touch.js
similarity index 100%
rename from demo/simulation/static/sigmajs/captors/sigma.captors.touch.js
rename to demo/static/sigmajs/captors/sigma.captors.touch.js
diff --git a/demo/simulation/static/sigmajs/classes/sigma.classes.camera.js b/demo/static/sigmajs/classes/sigma.classes.camera.js
similarity index 100%
rename from demo/simulation/static/sigmajs/classes/sigma.classes.camera.js
rename to demo/static/sigmajs/classes/sigma.classes.camera.js
diff --git a/demo/simulation/static/sigmajs/classes/sigma.classes.configurable.js b/demo/static/sigmajs/classes/sigma.classes.configurable.js
similarity index 100%
rename from demo/simulation/static/sigmajs/classes/sigma.classes.configurable.js
rename to demo/static/sigmajs/classes/sigma.classes.configurable.js
diff --git a/demo/simulation/static/sigmajs/classes/sigma.classes.dispatcher.js b/demo/static/sigmajs/classes/sigma.classes.dispatcher.js
similarity index 100%
rename from demo/simulation/static/sigmajs/classes/sigma.classes.dispatcher.js
rename to demo/static/sigmajs/classes/sigma.classes.dispatcher.js
diff --git a/demo/simulation/static/sigmajs/classes/sigma.classes.edgequad.js b/demo/static/sigmajs/classes/sigma.classes.edgequad.js
similarity index 100%
rename from demo/simulation/static/sigmajs/classes/sigma.classes.edgequad.js
rename to demo/static/sigmajs/classes/sigma.classes.edgequad.js
diff --git a/demo/simulation/static/sigmajs/classes/sigma.classes.graph.js b/demo/static/sigmajs/classes/sigma.classes.graph.js
similarity index 100%
rename from demo/simulation/static/sigmajs/classes/sigma.classes.graph.js
rename to demo/static/sigmajs/classes/sigma.classes.graph.js
diff --git a/demo/simulation/static/sigmajs/classes/sigma.classes.quad.js b/demo/static/sigmajs/classes/sigma.classes.quad.js
similarity index 100%
rename from demo/simulation/static/sigmajs/classes/sigma.classes.quad.js
rename to demo/static/sigmajs/classes/sigma.classes.quad.js
diff --git a/demo/simulation/static/sigmajs/conrad.js b/demo/static/sigmajs/conrad.js
similarity index 100%
rename from demo/simulation/static/sigmajs/conrad.js
rename to demo/static/sigmajs/conrad.js
diff --git a/demo/simulation/static/sigmajs/middlewares/sigma.middlewares.copy.js b/demo/static/sigmajs/middlewares/sigma.middlewares.copy.js
similarity index 100%
rename from demo/simulation/static/sigmajs/middlewares/sigma.middlewares.copy.js
rename to demo/static/sigmajs/middlewares/sigma.middlewares.copy.js
diff --git a/demo/simulation/static/sigmajs/middlewares/sigma.middlewares.rescale.js b/demo/static/sigmajs/middlewares/sigma.middlewares.rescale.js
similarity index 100%
rename from demo/simulation/static/sigmajs/middlewares/sigma.middlewares.rescale.js
rename to demo/static/sigmajs/middlewares/sigma.middlewares.rescale.js
diff --git a/demo/simulation/static/sigmajs/misc/sigma.misc.animation.js b/demo/static/sigmajs/misc/sigma.misc.animation.js
similarity index 100%
rename from demo/simulation/static/sigmajs/misc/sigma.misc.animation.js
rename to demo/static/sigmajs/misc/sigma.misc.animation.js
diff --git a/demo/simulation/static/sigmajs/misc/sigma.misc.bindDOMEvents.js b/demo/static/sigmajs/misc/sigma.misc.bindDOMEvents.js
similarity index 100%
rename from demo/simulation/static/sigmajs/misc/sigma.misc.bindDOMEvents.js
rename to demo/static/sigmajs/misc/sigma.misc.bindDOMEvents.js
diff --git a/demo/simulation/static/sigmajs/misc/sigma.misc.bindEvents.js b/demo/static/sigmajs/misc/sigma.misc.bindEvents.js
similarity index 100%
rename from demo/simulation/static/sigmajs/misc/sigma.misc.bindEvents.js
rename to demo/static/sigmajs/misc/sigma.misc.bindEvents.js
diff --git a/demo/simulation/static/sigmajs/misc/sigma.misc.drawHovers.js b/demo/static/sigmajs/misc/sigma.misc.drawHovers.js
similarity index 100%
rename from demo/simulation/static/sigmajs/misc/sigma.misc.drawHovers.js
rename to demo/static/sigmajs/misc/sigma.misc.drawHovers.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.arrow.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.arrow.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.arrow.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.arrow.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curve.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curve.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curve.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curve.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curvedArrow.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curvedArrow.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curvedArrow.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.curvedArrow.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.def.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.def.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edgehovers.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.arrow.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.arrow.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.arrow.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.arrow.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.curve.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.curve.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.curve.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.curve.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.curvedArrow.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.curvedArrow.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.curvedArrow.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.curvedArrow.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.def.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.edges.def.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.edges.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.extremities.def.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.extremities.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.extremities.def.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.extremities.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.hovers.def.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.hovers.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.hovers.def.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.hovers.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.labels.def.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.labels.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.labels.def.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.labels.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.nodes.def.js b/demo/static/sigmajs/renderers/canvas/sigma.canvas.nodes.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/canvas/sigma.canvas.nodes.def.js
rename to demo/static/sigmajs/renderers/canvas/sigma.canvas.nodes.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/sigma.renderers.canvas.js b/demo/static/sigmajs/renderers/sigma.renderers.canvas.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/sigma.renderers.canvas.js
rename to demo/static/sigmajs/renderers/sigma.renderers.canvas.js
diff --git a/demo/simulation/static/sigmajs/renderers/sigma.renderers.def.js b/demo/static/sigmajs/renderers/sigma.renderers.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/sigma.renderers.def.js
rename to demo/static/sigmajs/renderers/sigma.renderers.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/sigma.renderers.svg.js b/demo/static/sigmajs/renderers/sigma.renderers.svg.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/sigma.renderers.svg.js
rename to demo/static/sigmajs/renderers/sigma.renderers.svg.js
diff --git a/demo/simulation/static/sigmajs/renderers/sigma.renderers.webgl.js b/demo/static/sigmajs/renderers/sigma.renderers.webgl.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/sigma.renderers.webgl.js
rename to demo/static/sigmajs/renderers/sigma.renderers.webgl.js
diff --git a/demo/simulation/static/sigmajs/renderers/svg/sigma.svg.edges.curve.js b/demo/static/sigmajs/renderers/svg/sigma.svg.edges.curve.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/svg/sigma.svg.edges.curve.js
rename to demo/static/sigmajs/renderers/svg/sigma.svg.edges.curve.js
diff --git a/demo/simulation/static/sigmajs/renderers/svg/sigma.svg.edges.def.js b/demo/static/sigmajs/renderers/svg/sigma.svg.edges.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/svg/sigma.svg.edges.def.js
rename to demo/static/sigmajs/renderers/svg/sigma.svg.edges.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/svg/sigma.svg.hovers.def.js b/demo/static/sigmajs/renderers/svg/sigma.svg.hovers.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/svg/sigma.svg.hovers.def.js
rename to demo/static/sigmajs/renderers/svg/sigma.svg.hovers.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/svg/sigma.svg.labels.def.js b/demo/static/sigmajs/renderers/svg/sigma.svg.labels.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/svg/sigma.svg.labels.def.js
rename to demo/static/sigmajs/renderers/svg/sigma.svg.labels.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/svg/sigma.svg.nodes.def.js b/demo/static/sigmajs/renderers/svg/sigma.svg.nodes.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/svg/sigma.svg.nodes.def.js
rename to demo/static/sigmajs/renderers/svg/sigma.svg.nodes.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/svg/sigma.svg.utils.js b/demo/static/sigmajs/renderers/svg/sigma.svg.utils.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/svg/sigma.svg.utils.js
rename to demo/static/sigmajs/renderers/svg/sigma.svg.utils.js
diff --git a/demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.edges.arrow.js b/demo/static/sigmajs/renderers/webgl/sigma.webgl.edges.arrow.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.edges.arrow.js
rename to demo/static/sigmajs/renderers/webgl/sigma.webgl.edges.arrow.js
diff --git a/demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.edges.def.js b/demo/static/sigmajs/renderers/webgl/sigma.webgl.edges.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.edges.def.js
rename to demo/static/sigmajs/renderers/webgl/sigma.webgl.edges.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.edges.fast.js b/demo/static/sigmajs/renderers/webgl/sigma.webgl.edges.fast.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.edges.fast.js
rename to demo/static/sigmajs/renderers/webgl/sigma.webgl.edges.fast.js
diff --git a/demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.nodes.def.js b/demo/static/sigmajs/renderers/webgl/sigma.webgl.nodes.def.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.nodes.def.js
rename to demo/static/sigmajs/renderers/webgl/sigma.webgl.nodes.def.js
diff --git a/demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.nodes.fast.js b/demo/static/sigmajs/renderers/webgl/sigma.webgl.nodes.fast.js
similarity index 100%
rename from demo/simulation/static/sigmajs/renderers/webgl/sigma.webgl.nodes.fast.js
rename to demo/static/sigmajs/renderers/webgl/sigma.webgl.nodes.fast.js
diff --git a/demo/simulation/static/sigmajs/sigma.core.js b/demo/static/sigmajs/sigma.core.js
similarity index 100%
rename from demo/simulation/static/sigmajs/sigma.core.js
rename to demo/static/sigmajs/sigma.core.js
diff --git a/demo/simulation/static/sigmajs/sigma.export.js b/demo/static/sigmajs/sigma.export.js
similarity index 100%
rename from demo/simulation/static/sigmajs/sigma.export.js
rename to demo/static/sigmajs/sigma.export.js
diff --git a/demo/simulation/static/sigmajs/sigma.settings.js b/demo/static/sigmajs/sigma.settings.js
similarity index 100%
rename from demo/simulation/static/sigmajs/sigma.settings.js
rename to demo/static/sigmajs/sigma.settings.js
diff --git a/demo/simulation/static/sigmajs/utils/sigma.polyfills.js b/demo/static/sigmajs/utils/sigma.polyfills.js
similarity index 100%
rename from demo/simulation/static/sigmajs/utils/sigma.polyfills.js
rename to demo/static/sigmajs/utils/sigma.polyfills.js
diff --git a/demo/simulation/static/sigmajs/utils/sigma.utils.js b/demo/static/sigmajs/utils/sigma.utils.js
similarity index 100%
rename from demo/simulation/static/sigmajs/utils/sigma.utils.js
rename to demo/static/sigmajs/utils/sigma.utils.js
diff --git a/demo/util.py b/demo/util.py
new file mode 100644
index 000000000..b835d33b4
--- /dev/null
+++ b/demo/util.py
@@ -0,0 +1,58 @@
+# -*- coding: utf-8 -*-
+
+'''
+python utilities
+'''
+
+import os
+import sys
+import json
+
+
+def get_env(env_name, default=None, type=None):
+    '''
+    Fetches environment variable.
+    '''
+    if env_name in os.environ and type:
+        return type(os.environ[env_name])
+    elif env_name in os.environ:
+        return os.environ[env_name]
+    elif type:
+        return type(default)
+
+    return default
+
+
+def set_modul_attrs(name, values):
+    """
+    Updates the module with the values.
+
+    :param name: str, module name, if this method call is located
+                 inside module then use __name__
+    :param values: dict, contains new key values.
+    """
+    #   get the config module (this module)
+    config_module = sys.modules[name]
+
+    #   set all the values for given keys on this module
+    for key, value in values.items():
+        setattr(config_module, key, value)
+
+
+def load_module_attrs(name, env_flag):
+    """
+    A function for initializing module from config files (JSON formatted).
+    Called when loading the module. The module is specified by it's name.
+
+    :param name: str, module name, if this method call is located
+                 inside module then use __name__
+    :param env_flag: str, name of the env variable in which is path to JSON
+                     file from which module attributes are going to be
+                     populated
+    :param argv_flag: str, name of program argument which will define path
+                      to the json file
+    """
+    config_path = get_env(env_flag)
+    if config_path:
+        with open(config_path, 'r') as config_file:
+            set_modul_attrs(name, json.load(config_file))
diff --git a/demo/web_service.py b/demo/web_service.py
index c67ab2fa9..553a352d2 100644
--- a/demo/web_service.py
+++ b/demo/web_service.py
@@ -3,9 +3,9 @@
 from flask import Flask
 
 
-class WebService(Flask):
+class WebService(object):
 
-    def __init__(self):
+    def __init__(self, name):
         '''
         '''
         self.server = Flask(__name__)
diff --git a/demo/worker/__init__.py b/demo/worker/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/demo/worker/benchmark.cpp b/demo/worker/benchmark.cpp
new file mode 100644
index 000000000..791084afb
--- /dev/null
+++ b/demo/worker/benchmark.cpp
@@ -0,0 +1,2393 @@
+/* Generated by Cython 0.23.4 */
+
+#define PY_SSIZE_T_CLEAN
+#include "Python.h"
+#ifndef Py_PYTHON_H
+    #error Python headers needed to compile C extensions, please install development version of Python.
+#elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03020000)
+    #error Cython requires Python 2.6+ or Python 3.2+.
+#else
+#define CYTHON_ABI "0_23_4"
+#include <stddef.h>
+#ifndef offsetof
+#define offsetof(type, member) ( (size_t) & ((type*)0) -> member )
+#endif
+#if !defined(WIN32) && !defined(MS_WINDOWS)
+  #ifndef __stdcall
+    #define __stdcall
+  #endif
+  #ifndef __cdecl
+    #define __cdecl
+  #endif
+  #ifndef __fastcall
+    #define __fastcall
+  #endif
+#endif
+#ifndef DL_IMPORT
+  #define DL_IMPORT(t) t
+#endif
+#ifndef DL_EXPORT
+  #define DL_EXPORT(t) t
+#endif
+#ifndef PY_LONG_LONG
+  #define PY_LONG_LONG LONG_LONG
+#endif
+#ifndef Py_HUGE_VAL
+  #define Py_HUGE_VAL HUGE_VAL
+#endif
+#ifdef PYPY_VERSION
+#define CYTHON_COMPILING_IN_PYPY 1
+#define CYTHON_COMPILING_IN_CPYTHON 0
+#else
+#define CYTHON_COMPILING_IN_PYPY 0
+#define CYTHON_COMPILING_IN_CPYTHON 1
+#endif
+#if !defined(CYTHON_USE_PYLONG_INTERNALS) && CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x02070000
+#define CYTHON_USE_PYLONG_INTERNALS 1
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX < 0x02070600 && !defined(Py_OptimizeFlag)
+#define Py_OptimizeFlag 0
+#endif
+#define __PYX_BUILD_PY_SSIZE_T "n"
+#define CYTHON_FORMAT_SSIZE_T "z"
+#if PY_MAJOR_VERSION < 3
+  #define __Pyx_BUILTIN_MODULE_NAME "__builtin__"
+  #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
+          PyCode_New(a+k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
+  #define __Pyx_DefaultClassType PyClass_Type
+#else
+  #define __Pyx_BUILTIN_MODULE_NAME "builtins"
+  #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
+          PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
+  #define __Pyx_DefaultClassType PyType_Type
+#endif
+#ifndef Py_TPFLAGS_CHECKTYPES
+  #define Py_TPFLAGS_CHECKTYPES 0
+#endif
+#ifndef Py_TPFLAGS_HAVE_INDEX
+  #define Py_TPFLAGS_HAVE_INDEX 0
+#endif
+#ifndef Py_TPFLAGS_HAVE_NEWBUFFER
+  #define Py_TPFLAGS_HAVE_NEWBUFFER 0
+#endif
+#ifndef Py_TPFLAGS_HAVE_FINALIZE
+  #define Py_TPFLAGS_HAVE_FINALIZE 0
+#endif
+#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
+  #define CYTHON_PEP393_ENABLED 1
+  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
+  #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
+  #define __Pyx_PyUnicode_KIND(u)         PyUnicode_KIND(u)
+  #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
+  #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
+#else
+  #define CYTHON_PEP393_ENABLED 0
+  #define __Pyx_PyUnicode_READY(op)       (0)
+  #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_SIZE(u)
+  #define __Pyx_PyUnicode_READ_CHAR(u, i) ((Py_UCS4)(PyUnicode_AS_UNICODE(u)[i]))
+  #define __Pyx_PyUnicode_KIND(u)         (sizeof(Py_UNICODE))
+  #define __Pyx_PyUnicode_DATA(u)         ((void*)PyUnicode_AS_UNICODE(u))
+  #define __Pyx_PyUnicode_READ(k, d, i)   ((void)(k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
+#endif
+#if CYTHON_COMPILING_IN_PYPY
+  #define __Pyx_PyUnicode_Concat(a, b)      PyNumber_Add(a, b)
+  #define __Pyx_PyUnicode_ConcatSafe(a, b)  PyNumber_Add(a, b)
+#else
+  #define __Pyx_PyUnicode_Concat(a, b)      PyUnicode_Concat(a, b)
+  #define __Pyx_PyUnicode_ConcatSafe(a, b)  ((unlikely((a) == Py_None) || unlikely((b) == Py_None)) ?\
+      PyNumber_Add(a, b) : __Pyx_PyUnicode_Concat(a, b))
+#endif
+#if CYTHON_COMPILING_IN_PYPY && !defined(PyUnicode_Contains)
+  #define PyUnicode_Contains(u, s)  PySequence_Contains(u, s)
+#endif
+#define __Pyx_PyString_FormatSafe(a, b)   ((unlikely((a) == Py_None)) ? PyNumber_Remainder(a, b) : __Pyx_PyString_Format(a, b))
+#define __Pyx_PyUnicode_FormatSafe(a, b)  ((unlikely((a) == Py_None)) ? PyNumber_Remainder(a, b) : PyUnicode_Format(a, b))
+#if PY_MAJOR_VERSION >= 3
+  #define __Pyx_PyString_Format(a, b)  PyUnicode_Format(a, b)
+#else
+  #define __Pyx_PyString_Format(a, b)  PyString_Format(a, b)
+#endif
+#if PY_MAJOR_VERSION >= 3
+  #define PyBaseString_Type            PyUnicode_Type
+  #define PyStringObject               PyUnicodeObject
+  #define PyString_Type                PyUnicode_Type
+  #define PyString_Check               PyUnicode_Check
+  #define PyString_CheckExact          PyUnicode_CheckExact
+#endif
+#if PY_MAJOR_VERSION >= 3
+  #define __Pyx_PyBaseString_Check(obj) PyUnicode_Check(obj)
+  #define __Pyx_PyBaseString_CheckExact(obj) PyUnicode_CheckExact(obj)
+#else
+  #define __Pyx_PyBaseString_Check(obj) (PyString_Check(obj) || PyUnicode_Check(obj))
+  #define __Pyx_PyBaseString_CheckExact(obj) (PyString_CheckExact(obj) || PyUnicode_CheckExact(obj))
+#endif
+#ifndef PySet_CheckExact
+  #define PySet_CheckExact(obj)        (Py_TYPE(obj) == &PySet_Type)
+#endif
+#define __Pyx_TypeCheck(obj, type) PyObject_TypeCheck(obj, (PyTypeObject *)type)
+#if PY_MAJOR_VERSION >= 3
+  #define PyIntObject                  PyLongObject
+  #define PyInt_Type                   PyLong_Type
+  #define PyInt_Check(op)              PyLong_Check(op)
+  #define PyInt_CheckExact(op)         PyLong_CheckExact(op)
+  #define PyInt_FromString             PyLong_FromString
+  #define PyInt_FromUnicode            PyLong_FromUnicode
+  #define PyInt_FromLong               PyLong_FromLong
+  #define PyInt_FromSize_t             PyLong_FromSize_t
+  #define PyInt_FromSsize_t            PyLong_FromSsize_t
+  #define PyInt_AsLong                 PyLong_AsLong
+  #define PyInt_AS_LONG                PyLong_AS_LONG
+  #define PyInt_AsSsize_t              PyLong_AsSsize_t
+  #define PyInt_AsUnsignedLongMask     PyLong_AsUnsignedLongMask
+  #define PyInt_AsUnsignedLongLongMask PyLong_AsUnsignedLongLongMask
+  #define PyNumber_Int                 PyNumber_Long
+#endif
+#if PY_MAJOR_VERSION >= 3
+  #define PyBoolObject                 PyLongObject
+#endif
+#if PY_MAJOR_VERSION >= 3 && CYTHON_COMPILING_IN_PYPY
+  #ifndef PyUnicode_InternFromString
+    #define PyUnicode_InternFromString(s) PyUnicode_FromString(s)
+  #endif
+#endif
+#if PY_VERSION_HEX < 0x030200A4
+  typedef long Py_hash_t;
+  #define __Pyx_PyInt_FromHash_t PyInt_FromLong
+  #define __Pyx_PyInt_AsHash_t   PyInt_AsLong
+#else
+  #define __Pyx_PyInt_FromHash_t PyInt_FromSsize_t
+  #define __Pyx_PyInt_AsHash_t   PyInt_AsSsize_t
+#endif
+#if PY_MAJOR_VERSION >= 3
+  #define __Pyx_PyMethod_New(func, self, klass) ((self) ? PyMethod_New(func, self) : PyInstanceMethod_New(func))
+#else
+  #define __Pyx_PyMethod_New(func, self, klass) PyMethod_New(func, self, klass)
+#endif
+#if PY_VERSION_HEX >= 0x030500B1
+#define __Pyx_PyAsyncMethodsStruct PyAsyncMethods
+#define __Pyx_PyType_AsAsync(obj) (Py_TYPE(obj)->tp_as_async)
+#elif CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
+typedef struct {
+    unaryfunc am_await;
+    unaryfunc am_aiter;
+    unaryfunc am_anext;
+} __Pyx_PyAsyncMethodsStruct;
+#define __Pyx_PyType_AsAsync(obj) ((__Pyx_PyAsyncMethodsStruct*) (Py_TYPE(obj)->tp_reserved))
+#else
+#define __Pyx_PyType_AsAsync(obj) NULL
+#endif
+#ifndef CYTHON_RESTRICT
+  #if defined(__GNUC__)
+    #define CYTHON_RESTRICT __restrict__
+  #elif defined(_MSC_VER) && _MSC_VER >= 1400
+    #define CYTHON_RESTRICT __restrict
+  #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+    #define CYTHON_RESTRICT restrict
+  #else
+    #define CYTHON_RESTRICT
+  #endif
+#endif
+#define __Pyx_void_to_None(void_result) ((void)(void_result), Py_INCREF(Py_None), Py_None)
+
+#ifndef __cplusplus
+  #error "Cython files generated with the C++ option must be compiled with a C++ compiler."
+#endif
+#ifndef CYTHON_INLINE
+  #define CYTHON_INLINE inline
+#endif
+template<typename T>
+void __Pyx_call_destructor(T& x) {
+    x.~T();
+}
+template<typename T>
+class __Pyx_FakeReference {
+  public:
+    __Pyx_FakeReference() : ptr(NULL) { }
+    __Pyx_FakeReference(const T& ref) : ptr(const_cast<T*>(&ref)) { }
+    T *operator->() { return ptr; }
+    operator T&() { return *ptr; }
+  private:
+    T *ptr;
+};
+
+#if defined(WIN32) || defined(MS_WINDOWS)
+  #define _USE_MATH_DEFINES
+#endif
+#include <math.h>
+#ifdef NAN
+#define __PYX_NAN() ((float) NAN)
+#else
+static CYTHON_INLINE float __PYX_NAN() {
+  float value;
+  memset(&value, 0xFF, sizeof(value));
+  return value;
+}
+#endif
+
+
+#if PY_MAJOR_VERSION >= 3
+  #define __Pyx_PyNumber_Divide(x,y)         PyNumber_TrueDivide(x,y)
+  #define __Pyx_PyNumber_InPlaceDivide(x,y)  PyNumber_InPlaceTrueDivide(x,y)
+#else
+  #define __Pyx_PyNumber_Divide(x,y)         PyNumber_Divide(x,y)
+  #define __Pyx_PyNumber_InPlaceDivide(x,y)  PyNumber_InPlaceDivide(x,y)
+#endif
+
+#ifndef __PYX_EXTERN_C
+  #ifdef __cplusplus
+    #define __PYX_EXTERN_C extern "C"
+  #else
+    #define __PYX_EXTERN_C extern
+  #endif
+#endif
+
+#define __PYX_HAVE__benchmark
+#define __PYX_HAVE_API__benchmark
+#include "string.h"
+#include <string>
+#include "ios"
+#include "new"
+#include "stdexcept"
+#include "typeinfo"
+#include <vector>
+#include "benchmark.hpp"
+#ifdef _OPENMP
+#include <omp.h>
+#endif /* _OPENMP */
+
+#ifdef PYREX_WITHOUT_ASSERTIONS
+#define CYTHON_WITHOUT_ASSERTIONS
+#endif
+
+#ifndef CYTHON_UNUSED
+# if defined(__GNUC__)
+#   if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
+#     define CYTHON_UNUSED __attribute__ ((__unused__))
+#   else
+#     define CYTHON_UNUSED
+#   endif
+# elif defined(__ICC) || (defined(__INTEL_COMPILER) && !defined(_MSC_VER))
+#   define CYTHON_UNUSED __attribute__ ((__unused__))
+# else
+#   define CYTHON_UNUSED
+# endif
+#endif
+#ifndef CYTHON_NCP_UNUSED
+# if CYTHON_COMPILING_IN_CPYTHON
+#  define CYTHON_NCP_UNUSED
+# else
+#  define CYTHON_NCP_UNUSED CYTHON_UNUSED
+# endif
+#endif
+typedef struct {PyObject **p; char *s; const Py_ssize_t n; const char* encoding;
+                const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry;
+
+#define __PYX_DEFAULT_STRING_ENCODING_IS_ASCII 0
+#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT 0
+#define __PYX_DEFAULT_STRING_ENCODING ""
+#define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
+#define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
+#define __Pyx_uchar_cast(c) ((unsigned char)c)
+#define __Pyx_long_cast(x) ((long)x)
+#define __Pyx_fits_Py_ssize_t(v, type, is_signed)  (\
+    (sizeof(type) < sizeof(Py_ssize_t))  ||\
+    (sizeof(type) > sizeof(Py_ssize_t) &&\
+          likely(v < (type)PY_SSIZE_T_MAX ||\
+                 v == (type)PY_SSIZE_T_MAX)  &&\
+          (!is_signed || likely(v > (type)PY_SSIZE_T_MIN ||\
+                                v == (type)PY_SSIZE_T_MIN)))  ||\
+    (sizeof(type) == sizeof(Py_ssize_t) &&\
+          (is_signed || likely(v < (type)PY_SSIZE_T_MAX ||\
+                               v == (type)PY_SSIZE_T_MAX)))  )
+#if defined (__cplusplus) && __cplusplus >= 201103L
+    #include <cstdlib>
+    #define __Pyx_sst_abs(value) std::abs(value)
+#elif SIZEOF_INT >= SIZEOF_SIZE_T
+    #define __Pyx_sst_abs(value) abs(value)
+#elif SIZEOF_LONG >= SIZEOF_SIZE_T
+    #define __Pyx_sst_abs(value) labs(value)
+#elif defined (_MSC_VER) && defined (_M_X64)
+    #define __Pyx_sst_abs(value) _abs64(value)
+#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+    #define __Pyx_sst_abs(value) llabs(value)
+#elif defined (__GNUC__)
+    #define __Pyx_sst_abs(value) __builtin_llabs(value)
+#else
+    #define __Pyx_sst_abs(value) ((value<0) ? -value : value)
+#endif
+static CYTHON_INLINE char* __Pyx_PyObject_AsString(PyObject*);
+static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject*, Py_ssize_t* length);
+#define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s))
+#define __Pyx_PyByteArray_FromStringAndSize(s, l) PyByteArray_FromStringAndSize((const char*)s, l)
+#define __Pyx_PyBytes_FromString        PyBytes_FromString
+#define __Pyx_PyBytes_FromStringAndSize PyBytes_FromStringAndSize
+static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char*);
+#if PY_MAJOR_VERSION < 3
+    #define __Pyx_PyStr_FromString        __Pyx_PyBytes_FromString
+    #define __Pyx_PyStr_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
+#else
+    #define __Pyx_PyStr_FromString        __Pyx_PyUnicode_FromString
+    #define __Pyx_PyStr_FromStringAndSize __Pyx_PyUnicode_FromStringAndSize
+#endif
+#define __Pyx_PyObject_AsSString(s)    ((signed char*) __Pyx_PyObject_AsString(s))
+#define __Pyx_PyObject_AsUString(s)    ((unsigned char*) __Pyx_PyObject_AsString(s))
+#define __Pyx_PyObject_FromCString(s)  __Pyx_PyObject_FromString((const char*)s)
+#define __Pyx_PyBytes_FromCString(s)   __Pyx_PyBytes_FromString((const char*)s)
+#define __Pyx_PyByteArray_FromCString(s)   __Pyx_PyByteArray_FromString((const char*)s)
+#define __Pyx_PyStr_FromCString(s)     __Pyx_PyStr_FromString((const char*)s)
+#define __Pyx_PyUnicode_FromCString(s) __Pyx_PyUnicode_FromString((const char*)s)
+#if PY_MAJOR_VERSION < 3
+static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u)
+{
+    const Py_UNICODE *u_end = u;
+    while (*u_end++) ;
+    return (size_t)(u_end - u - 1);
+}
+#else
+#define __Pyx_Py_UNICODE_strlen Py_UNICODE_strlen
+#endif
+#define __Pyx_PyUnicode_FromUnicode(u)       PyUnicode_FromUnicode(u, __Pyx_Py_UNICODE_strlen(u))
+#define __Pyx_PyUnicode_FromUnicodeAndLength PyUnicode_FromUnicode
+#define __Pyx_PyUnicode_AsUnicode            PyUnicode_AsUnicode
+#define __Pyx_NewRef(obj) (Py_INCREF(obj), obj)
+#define __Pyx_Owned_Py_None(b) __Pyx_NewRef(Py_None)
+#define __Pyx_PyBool_FromLong(b) ((b) ? __Pyx_NewRef(Py_True) : __Pyx_NewRef(Py_False))
+static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject*);
+static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x);
+static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject*);
+static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
+#if CYTHON_COMPILING_IN_CPYTHON
+#define __pyx_PyFloat_AsDouble(x) (PyFloat_CheckExact(x) ? PyFloat_AS_DOUBLE(x) : PyFloat_AsDouble(x))
+#else
+#define __pyx_PyFloat_AsDouble(x) PyFloat_AsDouble(x)
+#endif
+#define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
+#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
+static int __Pyx_sys_getdefaultencoding_not_ascii;
+static int __Pyx_init_sys_getdefaultencoding_params(void) {
+    PyObject* sys;
+    PyObject* default_encoding = NULL;
+    PyObject* ascii_chars_u = NULL;
+    PyObject* ascii_chars_b = NULL;
+    const char* default_encoding_c;
+    sys = PyImport_ImportModule("sys");
+    if (!sys) goto bad;
+    default_encoding = PyObject_CallMethod(sys, (char*) "getdefaultencoding", NULL);
+    Py_DECREF(sys);
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+static const char *__pyx_f[] = {
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+  #define __Pyx_GIVEREF(r)
+  #define __Pyx_XINCREF(r) Py_XINCREF(r)
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+static void __Pyx_RaiseDoubleKeywordsError(const char* func_name, PyObject* kw_name);
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+static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[],\
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+static struct PyModuleDef __pyx_moduledef = {
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+    NULL, /* m_reload */
+    NULL, /* m_traverse */
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+static int __Pyx_InitGlobals(void) {
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+  return -1;
+}
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+PyMODINIT_FUNC initbenchmark(void); /*proto*/
+PyMODINIT_FUNC initbenchmark(void)
+#else
+PyMODINIT_FUNC PyInit_benchmark(void); /*proto*/
+PyMODINIT_FUNC PyInit_benchmark(void)
+#endif
+{
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+  if (__pyx_Coroutine_init() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #endif
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+  if (__pyx_Generator_init() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #endif
+  #ifdef __Pyx_StopAsyncIteration_USED
+  if (__pyx_StopAsyncIteration_init() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #endif
+  /*--- Library function declarations ---*/
+  /*--- Threads initialization code ---*/
+  #if defined(__PYX_FORCE_INIT_THREADS) && __PYX_FORCE_INIT_THREADS
+  #ifdef WITH_THREAD /* Python build with threading support? */
+  PyEval_InitThreads();
+  #endif
+  #endif
+  /*--- Module creation code ---*/
+  #if PY_MAJOR_VERSION < 3
+  __pyx_m = Py_InitModule4("benchmark", __pyx_methods, 0, 0, PYTHON_API_VERSION); Py_XINCREF(__pyx_m);
+  #else
+  __pyx_m = PyModule_Create(&__pyx_moduledef);
+  #endif
+  if (unlikely(!__pyx_m)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_d = PyModule_GetDict(__pyx_m); if (unlikely(!__pyx_d)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  Py_INCREF(__pyx_d);
+  __pyx_b = PyImport_AddModule(__Pyx_BUILTIN_MODULE_NAME); if (unlikely(!__pyx_b)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  Py_INCREF(__pyx_b);
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+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+  /*--- Initialize various global constants etc. ---*/
+  if (__Pyx_InitGlobals() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
+  if (__Pyx_init_sys_getdefaultencoding_params() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #endif
+  if (__pyx_module_is_main_benchmark) {
+    if (PyObject_SetAttrString(__pyx_m, "__name__", __pyx_n_s_main) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  #if PY_MAJOR_VERSION >= 3
+  {
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+    if (!PyDict_GetItemString(modules, "benchmark")) {
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+    }
+  }
+  #endif
+  /*--- Builtin init code ---*/
+  if (__Pyx_InitCachedBuiltins() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  /*--- Constants init code ---*/
+  if (__Pyx_InitCachedConstants() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  /*--- Global init code ---*/
+  /*--- Variable export code ---*/
+  /*--- Function export code ---*/
+  /*--- Type init code ---*/
+  /*--- Type import code ---*/
+  /*--- Variable import code ---*/
+  /*--- Function import code ---*/
+  /*--- Execution code ---*/
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+  if (__Pyx_patch_abc() < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  #endif
+
+  /* "benchmark.pyx":14
+ * 
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+ * def benchmark(host, port, connections_per_query, duration, queries):             # <<<<<<<<<<<<<<
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+ */
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+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "benchmark.pyx":1
+ * # -*- coding: utf-8 -*-             # <<<<<<<<<<<<<<
+ * 
+ * from libcpp.string cimport string
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+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "string.to_py":55
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+ * @cname("__pyx_convert_PyByteArray_string_to_py_std__in_string")
+ * cdef inline object __pyx_convert_PyByteArray_string_to_py_std__in_string(const string& s):             # <<<<<<<<<<<<<<
+ *     return __Pyx_PyByteArray_FromStringAndSize(s.data(), s.size())
+ * 
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+
+  /*--- Wrapped vars code ---*/
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+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  if (__pyx_m) {
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+    }
+    Py_DECREF(__pyx_m); __pyx_m = 0;
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+  __pyx_L0:;
+  __Pyx_RefNannyFinishContext();
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+}
+
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+static __Pyx_RefNannyAPIStruct *__Pyx_RefNannyImportAPI(const char *modname) {
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+    m = PyImport_ImportModule((char *)modname);
+    if (!m) goto end;
+    p = PyObject_GetAttrString(m, (char *)"RefNannyAPI");
+    if (!p) goto end;
+    r = PyLong_AsVoidPtr(p);
+end:
+    Py_XDECREF(p);
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+}
+#endif
+
+static void __Pyx_RaiseArgtupleInvalid(
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+    int exact,
+    Py_ssize_t num_min,
+    Py_ssize_t num_max,
+    Py_ssize_t num_found)
+{
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+    const char *more_or_less;
+    if (num_found < num_min) {
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+        more_or_less = "at most";
+    }
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+        more_or_less = "exactly";
+    }
+    PyErr_Format(PyExc_TypeError,
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+                 func_name, more_or_less, num_expected,
+                 (num_expected == 1) ? "" : "s", num_found);
+}
+
+static void __Pyx_RaiseDoubleKeywordsError(
+    const char* func_name,
+    PyObject* kw_name)
+{
+    PyErr_Format(PyExc_TypeError,
+        #if PY_MAJOR_VERSION >= 3
+        "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
+        #else
+        "%s() got multiple values for keyword argument '%s'", func_name,
+        PyString_AsString(kw_name));
+        #endif
+}
+
+static int __Pyx_ParseOptionalKeywords(
+    PyObject *kwds,
+    PyObject **argnames[],
+    PyObject *kwds2,
+    PyObject *values[],
+    Py_ssize_t num_pos_args,
+    const char* function_name)
+{
+    PyObject *key = 0, *value = 0;
+    Py_ssize_t pos = 0;
+    PyObject*** name;
+    PyObject*** first_kw_arg = argnames + num_pos_args;
+    while (PyDict_Next(kwds, &pos, &key, &value)) {
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+        while (*name && (**name != key)) name++;
+        if (*name) {
+            values[name-argnames] = value;
+            continue;
+        }
+        name = first_kw_arg;
+        #if PY_MAJOR_VERSION < 3
+        if (likely(PyString_CheckExact(key)) || likely(PyString_Check(key))) {
+            while (*name) {
+                if ((CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**name) == PyString_GET_SIZE(key))
+                        && _PyString_Eq(**name, key)) {
+                    values[name-argnames] = value;
+                    break;
+                }
+                name++;
+            }
+            if (*name) continue;
+            else {
+                PyObject*** argname = argnames;
+                while (argname != first_kw_arg) {
+                    if ((**argname == key) || (
+                            (CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**argname) == PyString_GET_SIZE(key))
+                             && _PyString_Eq(**argname, key))) {
+                        goto arg_passed_twice;
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+                    argname++;
+                }
+            }
+        } else
+        #endif
+        if (likely(PyUnicode_Check(key))) {
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+                int cmp = (**name == key) ? 0 :
+                #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
+                    (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
+                #endif
+                    PyUnicode_Compare(**name, key);
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+                if (cmp == 0) {
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+                }
+                name++;
+            }
+            if (*name) continue;
+            else {
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+                while (argname != first_kw_arg) {
+                    int cmp = (**argname == key) ? 0 :
+                    #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
+                        (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
+                    #endif
+                        PyUnicode_Compare(**argname, key);
+                    if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
+                    if (cmp == 0) goto arg_passed_twice;
+                    argname++;
+                }
+            }
+        } else
+            goto invalid_keyword_type;
+        if (kwds2) {
+            if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
+        } else {
+            goto invalid_keyword;
+        }
+    }
+    return 0;
+arg_passed_twice:
+    __Pyx_RaiseDoubleKeywordsError(function_name, key);
+    goto bad;
+invalid_keyword_type:
+    PyErr_Format(PyExc_TypeError,
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+    goto bad;
+invalid_keyword:
+    PyErr_Format(PyExc_TypeError,
+    #if PY_MAJOR_VERSION < 3
+        "%.200s() got an unexpected keyword argument '%.200s'",
+        function_name, PyString_AsString(key));
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+bad:
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+}
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+static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
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+        return count;
+    }
+    while (start < end) {
+        mid = start + (end - start) / 2;
+        if (code_line < entries[mid].code_line) {
+            end = mid;
+        } else if (code_line > entries[mid].code_line) {
+             start = mid + 1;
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+            return mid;
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+    }
+    if (code_line <= entries[mid].code_line) {
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+    }
+}
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+    PyCodeObject* code_object;
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+    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
+    if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) {
+        return NULL;
+    }
+    code_object = __pyx_code_cache.entries[pos].code_object;
+    Py_INCREF(code_object);
+    return code_object;
+}
+static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
+    int pos, i;
+    __Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries;
+    if (unlikely(!code_line)) {
+        return;
+    }
+    if (unlikely(!entries)) {
+        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry));
+        if (likely(entries)) {
+            __pyx_code_cache.entries = entries;
+            __pyx_code_cache.max_count = 64;
+            __pyx_code_cache.count = 1;
+            entries[0].code_line = code_line;
+            entries[0].code_object = code_object;
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+        }
+        return;
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+    if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) {
+        PyCodeObject* tmp = entries[pos].code_object;
+        entries[pos].code_object = code_object;
+        Py_DECREF(tmp);
+        return;
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+    if (__pyx_code_cache.count == __pyx_code_cache.max_count) {
+        int new_max = __pyx_code_cache.max_count + 64;
+        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc(
+            __pyx_code_cache.entries, (size_t)new_max*sizeof(__Pyx_CodeObjectCacheEntry));
+        if (unlikely(!entries)) {
+            return;
+        }
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+    entries[pos].code_line = code_line;
+    entries[pos].code_object = code_object;
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+    Py_INCREF(code_object);
+}
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+#include "compile.h"
+#include "frameobject.h"
+#include "traceback.h"
+static PyCodeObject* __Pyx_CreateCodeObjectForTraceback(
+            const char *funcname, int c_line,
+            int py_line, const char *filename) {
+    PyCodeObject *py_code = 0;
+    PyObject *py_srcfile = 0;
+    PyObject *py_funcname = 0;
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+    py_srcfile = PyString_FromString(filename);
+    #else
+    py_srcfile = PyUnicode_FromString(filename);
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+    if (!py_srcfile) goto bad;
+    if (c_line) {
+        #if PY_MAJOR_VERSION < 3
+        py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
+        #else
+        py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
+        #endif
+    }
+    else {
+        #if PY_MAJOR_VERSION < 3
+        py_funcname = PyString_FromString(funcname);
+        #else
+        py_funcname = PyUnicode_FromString(funcname);
+        #endif
+    }
+    if (!py_funcname) goto bad;
+    py_code = __Pyx_PyCode_New(
+        0,
+        0,
+        0,
+        0,
+        0,
+        __pyx_empty_bytes, /*PyObject *code,*/
+        __pyx_empty_tuple, /*PyObject *consts,*/
+        __pyx_empty_tuple, /*PyObject *names,*/
+        __pyx_empty_tuple, /*PyObject *varnames,*/
+        __pyx_empty_tuple, /*PyObject *freevars,*/
+        __pyx_empty_tuple, /*PyObject *cellvars,*/
+        py_srcfile,   /*PyObject *filename,*/
+        py_funcname,  /*PyObject *name,*/
+        py_line,
+        __pyx_empty_bytes  /*PyObject *lnotab*/
+    );
+    Py_DECREF(py_srcfile);
+    Py_DECREF(py_funcname);
+    return py_code;
+bad:
+    Py_XDECREF(py_srcfile);
+    Py_XDECREF(py_funcname);
+    return NULL;
+}
+static void __Pyx_AddTraceback(const char *funcname, int c_line,
+                               int py_line, const char *filename) {
+    PyCodeObject *py_code = 0;
+    PyFrameObject *py_frame = 0;
+    py_code = __pyx_find_code_object(c_line ? c_line : py_line);
+    if (!py_code) {
+        py_code = __Pyx_CreateCodeObjectForTraceback(
+            funcname, c_line, py_line, filename);
+        if (!py_code) goto bad;
+        __pyx_insert_code_object(c_line ? c_line : py_line, py_code);
+    }
+    py_frame = PyFrame_New(
+        PyThreadState_GET(), /*PyThreadState *tstate,*/
+        py_code,             /*PyCodeObject *code,*/
+        __pyx_d,      /*PyObject *globals,*/
+        0                    /*PyObject *locals*/
+    );
+    if (!py_frame) goto bad;
+    py_frame->f_lineno = py_line;
+    PyTraceBack_Here(py_frame);
+bad:
+    Py_XDECREF(py_code);
+    Py_XDECREF(py_frame);
+}
+
+#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value)\
+    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 0)
+#define __PYX_VERIFY_RETURN_INT_EXC(target_type, func_type, func_value)\
+    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 1)
+#define __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, exc)\
+    {\
+        func_type value = func_value;\
+        if (sizeof(target_type) < sizeof(func_type)) {\
+            if (unlikely(value != (func_type) (target_type) value)) {\
+                func_type zero = 0;\
+                if (exc && unlikely(value == (func_type)-1 && PyErr_Occurred()))\
+                    return (target_type) -1;\
+                if (is_unsigned && unlikely(value < zero))\
+                    goto raise_neg_overflow;\
+                else\
+                    goto raise_overflow;\
+            }\
+        }\
+        return (target_type) value;\
+    }
+
+#if CYTHON_USE_PYLONG_INTERNALS
+  #include "longintrepr.h"
+#endif
+
+static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
+    const int neg_one = (int) -1, const_zero = (int) 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        if (sizeof(int) < sizeof(long)) {
+            __PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x))
+        } else {
+            long val = PyInt_AS_LONG(x);
+            if (is_unsigned && unlikely(val < 0)) {
+                goto raise_neg_overflow;
+            }
+            return (int) val;
+        }
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_USE_PYLONG_INTERNALS
+            const digit* digits = ((PyLongObject*)x)->ob_digit;
+            switch (Py_SIZE(x)) {
+                case  0: return (int) 0;
+                case  1: __PYX_VERIFY_RETURN_INT(int, digit, digits[0])
+                case 2:
+                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) >= 2 * PyLong_SHIFT) {
+                            return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
+                        }
+                    }
+                    break;
+                case 3:
+                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) >= 3 * PyLong_SHIFT) {
+                            return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
+                        }
+                    }
+                    break;
+                case 4:
+                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) >= 4 * PyLong_SHIFT) {
+                            return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
+                        }
+                    }
+                    break;
+            }
+#endif
+#if CYTHON_COMPILING_IN_CPYTHON
+            if (unlikely(Py_SIZE(x) < 0)) {
+                goto raise_neg_overflow;
+            }
+#else
+            {
+                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+                if (unlikely(result < 0))
+                    return (int) -1;
+                if (unlikely(result == 1))
+                    goto raise_neg_overflow;
+            }
+#endif
+            if (sizeof(int) <= sizeof(unsigned long)) {
+                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
+            } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
+                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+            }
+        } else {
+#if CYTHON_USE_PYLONG_INTERNALS
+            const digit* digits = ((PyLongObject*)x)->ob_digit;
+            switch (Py_SIZE(x)) {
+                case  0: return (int) 0;
+                case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, -(sdigit) digits[0])
+                case  1: __PYX_VERIFY_RETURN_INT(int,  digit, +digits[0])
+                case -2:
+                    if (8 * sizeof(int) - 1 > 1 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
+                            return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
+                        }
+                    }
+                    break;
+                case 2:
+                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
+                            return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
+                        }
+                    }
+                    break;
+                case -3:
+                    if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
+                            return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
+                        }
+                    }
+                    break;
+                case 3:
+                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
+                            return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
+                        }
+                    }
+                    break;
+                case -4:
+                    if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
+                            return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
+                        }
+                    }
+                    break;
+                case 4:
+                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
+                            return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
+                        }
+                    }
+                    break;
+            }
+#endif
+            if (sizeof(int) <= sizeof(long)) {
+                __PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
+            } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
+                __PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
+            }
+        }
+        {
+#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
+            PyErr_SetString(PyExc_RuntimeError,
+                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
+#else
+            int val;
+            PyObject *v = __Pyx_PyNumber_Int(x);
+ #if PY_MAJOR_VERSION < 3
+            if (likely(v) && !PyLong_Check(v)) {
+                PyObject *tmp = v;
+                v = PyNumber_Long(tmp);
+                Py_DECREF(tmp);
+            }
+ #endif
+            if (likely(v)) {
+                int one = 1; int is_little = (int)*(unsigned char *)&one;
+                unsigned char *bytes = (unsigned char *)&val;
+                int ret = _PyLong_AsByteArray((PyLongObject *)v,
+                                              bytes, sizeof(val),
+                                              is_little, !is_unsigned);
+                Py_DECREF(v);
+                if (likely(!ret))
+                    return val;
+            }
+#endif
+            return (int) -1;
+        }
+    } else {
+        int val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (int) -1;
+        val = __Pyx_PyInt_As_int(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+raise_overflow:
+    PyErr_SetString(PyExc_OverflowError,
+        "value too large to convert to int");
+    return (int) -1;
+raise_neg_overflow:
+    PyErr_SetString(PyExc_OverflowError,
+        "can't convert negative value to int");
+    return (int) -1;
+}
+
+static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
+    const long neg_one = (long) -1, const_zero = (long) 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (is_unsigned) {
+        if (sizeof(long) < sizeof(long)) {
+            return PyInt_FromLong((long) value);
+        } else if (sizeof(long) <= sizeof(unsigned long)) {
+            return PyLong_FromUnsignedLong((unsigned long) value);
+        } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
+            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
+        }
+    } else {
+        if (sizeof(long) <= sizeof(long)) {
+            return PyInt_FromLong((long) value);
+        } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
+            return PyLong_FromLongLong((PY_LONG_LONG) value);
+        }
+    }
+    {
+        int one = 1; int little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&value;
+        return _PyLong_FromByteArray(bytes, sizeof(long),
+                                     little, !is_unsigned);
+    }
+}
+
+static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
+    const long neg_one = (long) -1, const_zero = (long) 0;
+    const int is_unsigned = neg_one > const_zero;
+#if PY_MAJOR_VERSION < 3
+    if (likely(PyInt_Check(x))) {
+        if (sizeof(long) < sizeof(long)) {
+            __PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x))
+        } else {
+            long val = PyInt_AS_LONG(x);
+            if (is_unsigned && unlikely(val < 0)) {
+                goto raise_neg_overflow;
+            }
+            return (long) val;
+        }
+    } else
+#endif
+    if (likely(PyLong_Check(x))) {
+        if (is_unsigned) {
+#if CYTHON_USE_PYLONG_INTERNALS
+            const digit* digits = ((PyLongObject*)x)->ob_digit;
+            switch (Py_SIZE(x)) {
+                case  0: return (long) 0;
+                case  1: __PYX_VERIFY_RETURN_INT(long, digit, digits[0])
+                case 2:
+                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) >= 2 * PyLong_SHIFT) {
+                            return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
+                        }
+                    }
+                    break;
+                case 3:
+                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) >= 3 * PyLong_SHIFT) {
+                            return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
+                        }
+                    }
+                    break;
+                case 4:
+                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) >= 4 * PyLong_SHIFT) {
+                            return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
+                        }
+                    }
+                    break;
+            }
+#endif
+#if CYTHON_COMPILING_IN_CPYTHON
+            if (unlikely(Py_SIZE(x) < 0)) {
+                goto raise_neg_overflow;
+            }
+#else
+            {
+                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
+                if (unlikely(result < 0))
+                    return (long) -1;
+                if (unlikely(result == 1))
+                    goto raise_neg_overflow;
+            }
+#endif
+            if (sizeof(long) <= sizeof(unsigned long)) {
+                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
+            } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
+                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+            }
+        } else {
+#if CYTHON_USE_PYLONG_INTERNALS
+            const digit* digits = ((PyLongObject*)x)->ob_digit;
+            switch (Py_SIZE(x)) {
+                case  0: return (long) 0;
+                case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, -(sdigit) digits[0])
+                case  1: __PYX_VERIFY_RETURN_INT(long,  digit, +digits[0])
+                case -2:
+                    if (8 * sizeof(long) - 1 > 1 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
+                            return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
+                        }
+                    }
+                    break;
+                case 2:
+                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
+                            return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
+                        }
+                    }
+                    break;
+                case -3:
+                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
+                            return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
+                        }
+                    }
+                    break;
+                case 3:
+                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
+                            return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
+                        }
+                    }
+                    break;
+                case -4:
+                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
+                            return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
+                        }
+                    }
+                    break;
+                case 4:
+                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
+                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
+                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
+                            return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
+                        }
+                    }
+                    break;
+            }
+#endif
+            if (sizeof(long) <= sizeof(long)) {
+                __PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
+            } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
+                __PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
+            }
+        }
+        {
+#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
+            PyErr_SetString(PyExc_RuntimeError,
+                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
+#else
+            long val;
+            PyObject *v = __Pyx_PyNumber_Int(x);
+ #if PY_MAJOR_VERSION < 3
+            if (likely(v) && !PyLong_Check(v)) {
+                PyObject *tmp = v;
+                v = PyNumber_Long(tmp);
+                Py_DECREF(tmp);
+            }
+ #endif
+            if (likely(v)) {
+                int one = 1; int is_little = (int)*(unsigned char *)&one;
+                unsigned char *bytes = (unsigned char *)&val;
+                int ret = _PyLong_AsByteArray((PyLongObject *)v,
+                                              bytes, sizeof(val),
+                                              is_little, !is_unsigned);
+                Py_DECREF(v);
+                if (likely(!ret))
+                    return val;
+            }
+#endif
+            return (long) -1;
+        }
+    } else {
+        long val;
+        PyObject *tmp = __Pyx_PyNumber_Int(x);
+        if (!tmp) return (long) -1;
+        val = __Pyx_PyInt_As_long(tmp);
+        Py_DECREF(tmp);
+        return val;
+    }
+raise_overflow:
+    PyErr_SetString(PyExc_OverflowError,
+        "value too large to convert to long");
+    return (long) -1;
+raise_neg_overflow:
+    PyErr_SetString(PyExc_OverflowError,
+        "can't convert negative value to long");
+    return (long) -1;
+}
+
+static int __Pyx_check_binary_version(void) {
+    char ctversion[4], rtversion[4];
+    PyOS_snprintf(ctversion, 4, "%d.%d", PY_MAJOR_VERSION, PY_MINOR_VERSION);
+    PyOS_snprintf(rtversion, 4, "%s", Py_GetVersion());
+    if (ctversion[0] != rtversion[0] || ctversion[2] != rtversion[2]) {
+        char message[200];
+        PyOS_snprintf(message, sizeof(message),
+                      "compiletime version %s of module '%.100s' "
+                      "does not match runtime version %s",
+                      ctversion, __Pyx_MODULE_NAME, rtversion);
+        return PyErr_WarnEx(NULL, message, 1);
+    }
+    return 0;
+}
+
+static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
+    while (t->p) {
+        #if PY_MAJOR_VERSION < 3
+        if (t->is_unicode) {
+            *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
+        } else if (t->intern) {
+            *t->p = PyString_InternFromString(t->s);
+        } else {
+            *t->p = PyString_FromStringAndSize(t->s, t->n - 1);
+        }
+        #else
+        if (t->is_unicode | t->is_str) {
+            if (t->intern) {
+                *t->p = PyUnicode_InternFromString(t->s);
+            } else if (t->encoding) {
+                *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
+            } else {
+                *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
+            }
+        } else {
+            *t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
+        }
+        #endif
+        if (!*t->p)
+            return -1;
+        ++t;
+    }
+    return 0;
+}
+
+static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char* c_str) {
+    return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));
+}
+static CYTHON_INLINE char* __Pyx_PyObject_AsString(PyObject* o) {
+    Py_ssize_t ignore;
+    return __Pyx_PyObject_AsStringAndSize(o, &ignore);
+}
+static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
+#if CYTHON_COMPILING_IN_CPYTHON && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
+    if (
+#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
+            __Pyx_sys_getdefaultencoding_not_ascii &&
+#endif
+            PyUnicode_Check(o)) {
+#if PY_VERSION_HEX < 0x03030000
+        char* defenc_c;
+        PyObject* defenc = _PyUnicode_AsDefaultEncodedString(o, NULL);
+        if (!defenc) return NULL;
+        defenc_c = PyBytes_AS_STRING(defenc);
+#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
+        {
+            char* end = defenc_c + PyBytes_GET_SIZE(defenc);
+            char* c;
+            for (c = defenc_c; c < end; c++) {
+                if ((unsigned char) (*c) >= 128) {
+                    PyUnicode_AsASCIIString(o);
+                    return NULL;
+                }
+            }
+        }
+#endif
+        *length = PyBytes_GET_SIZE(defenc);
+        return defenc_c;
+#else
+        if (__Pyx_PyUnicode_READY(o) == -1) return NULL;
+#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
+        if (PyUnicode_IS_ASCII(o)) {
+            *length = PyUnicode_GET_LENGTH(o);
+            return PyUnicode_AsUTF8(o);
+        } else {
+            PyUnicode_AsASCIIString(o);
+            return NULL;
+        }
+#else
+        return PyUnicode_AsUTF8AndSize(o, length);
+#endif
+#endif
+    } else
+#endif
+#if (!CYTHON_COMPILING_IN_PYPY) || (defined(PyByteArray_AS_STRING) && defined(PyByteArray_GET_SIZE))
+    if (PyByteArray_Check(o)) {
+        *length = PyByteArray_GET_SIZE(o);
+        return PyByteArray_AS_STRING(o);
+    } else
+#endif
+    {
+        char* result;
+        int r = PyBytes_AsStringAndSize(o, &result, length);
+        if (unlikely(r < 0)) {
+            return NULL;
+        } else {
+            return result;
+        }
+    }
+}
+static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject* x) {
+   int is_true = x == Py_True;
+   if (is_true | (x == Py_False) | (x == Py_None)) return is_true;
+   else return PyObject_IsTrue(x);
+}
+static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x) {
+  PyNumberMethods *m;
+  const char *name = NULL;
+  PyObject *res = NULL;
+#if PY_MAJOR_VERSION < 3
+  if (PyInt_Check(x) || PyLong_Check(x))
+#else
+  if (PyLong_Check(x))
+#endif
+    return __Pyx_NewRef(x);
+  m = Py_TYPE(x)->tp_as_number;
+#if PY_MAJOR_VERSION < 3
+  if (m && m->nb_int) {
+    name = "int";
+    res = PyNumber_Int(x);
+  }
+  else if (m && m->nb_long) {
+    name = "long";
+    res = PyNumber_Long(x);
+  }
+#else
+  if (m && m->nb_int) {
+    name = "int";
+    res = PyNumber_Long(x);
+  }
+#endif
+  if (res) {
+#if PY_MAJOR_VERSION < 3
+    if (!PyInt_Check(res) && !PyLong_Check(res)) {
+#else
+    if (!PyLong_Check(res)) {
+#endif
+      PyErr_Format(PyExc_TypeError,
+                   "__%.4s__ returned non-%.4s (type %.200s)",
+                   name, name, Py_TYPE(res)->tp_name);
+      Py_DECREF(res);
+      return NULL;
+    }
+  }
+  else if (!PyErr_Occurred()) {
+    PyErr_SetString(PyExc_TypeError,
+                    "an integer is required");
+  }
+  return res;
+}
+static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject* b) {
+  Py_ssize_t ival;
+  PyObject *x;
+#if PY_MAJOR_VERSION < 3
+  if (likely(PyInt_CheckExact(b))) {
+    if (sizeof(Py_ssize_t) >= sizeof(long))
+        return PyInt_AS_LONG(b);
+    else
+        return PyInt_AsSsize_t(x);
+  }
+#endif
+  if (likely(PyLong_CheckExact(b))) {
+    #if CYTHON_USE_PYLONG_INTERNALS
+    const digit* digits = ((PyLongObject*)b)->ob_digit;
+    const Py_ssize_t size = Py_SIZE(b);
+    if (likely(__Pyx_sst_abs(size) <= 1)) {
+        ival = likely(size) ? digits[0] : 0;
+        if (size == -1) ival = -ival;
+        return ival;
+    } else {
+      switch (size) {
+         case 2:
+           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
+             return (Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
+           }
+           break;
+         case -2:
+           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
+             return -(Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
+           }
+           break;
+         case 3:
+           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
+             return (Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
+           }
+           break;
+         case -3:
+           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
+             return -(Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
+           }
+           break;
+         case 4:
+           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
+             return (Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
+           }
+           break;
+         case -4:
+           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
+             return -(Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
+           }
+           break;
+      }
+    }
+    #endif
+    return PyLong_AsSsize_t(b);
+  }
+  x = PyNumber_Index(b);
+  if (!x) return -1;
+  ival = PyInt_AsSsize_t(x);
+  Py_DECREF(x);
+  return ival;
+}
+static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) {
+    return PyInt_FromSize_t(ival);
+}
+
+
+#endif /* Py_PYTHON_H */
diff --git a/demo/worker/benchmark.pyx b/demo/worker/benchmark.pyx
index 3d6889951..eedbfe83b 100644
--- a/demo/worker/benchmark.pyx
+++ b/demo/worker/benchmark.pyx
@@ -3,7 +3,7 @@
 from libcpp.string cimport string
 from libcpp.vector cimport vector
 
-cdef extern from "benchmark.hpp":
+cdef extern from "benchmark.hpp" nogil:
     string benchmark_json(const string& host,
                           const string& port,
                           int connections_per_query,
@@ -14,6 +14,7 @@ cdef extern from "benchmark.hpp":
 def benchmark(host, port, connections_per_query, duration, queries):
     '''
     '''
-    return benchmark_json(<const string&> host, <const string&> port,
-                          <int> connections_per_query, <double> duration,
-                          <const vector[string]&> queries)
+    result = benchmark_json(<const string&> host, <const string&> port,
+                            <int> connections_per_query, <double> duration,
+                            <const vector[string]&> queries)
+    return result
diff --git a/demo/worker/client.py b/demo/worker/client.py
index b044ed103..477bd1613 100644
--- a/demo/worker/client.py
+++ b/demo/worker/client.py
@@ -3,7 +3,8 @@
 from os import path
 from json import loads
 from subprocess import check_output
-from benchmark import benchmark
+
+from .benchmark import benchmark
 
 
 def subprocess_client(args):
@@ -46,7 +47,7 @@ def main_wrapped():
     '''
     Example of cython call.
     '''
-    args = [b"localhost", b"7474", 16, 1,
+    args = [b"localhost", b"7474", 1, 1,
             [b"CREATE (n{id:@}) RETURN n", b"CREATE (n{id:@}) RETURN n"]]
     result = wrapped_client(*args)
     return result
diff --git a/demo/worker/setup_runner.sh b/demo/worker/setup_runner.sh
index f10dfed3d..149ae89a1 100755
--- a/demo/worker/setup_runner.sh
+++ b/demo/worker/setup_runner.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 
 python setup.py build_ext --inplace
-mv benchmark.cpp __benchmark__.cpp
+# mv benchmark.cpp __benchmark__.cpp
diff --git a/demo/worker/worker_web_service.py b/demo/worker/worker_web_service.py
index 61e7c30ec..a5b55d6eb 100644
--- a/demo/worker/worker_web_service.py
+++ b/demo/worker/worker_web_service.py
@@ -2,15 +2,17 @@
 
 import logging
 import threading
+from os import path
 from flask import request, jsonify
 
-from .. import WebService
-from . import wrapped_client
+from web_service import WebService
+# from .client import wrapped_client
+from .client import subprocess_client
 
 log = logging.getLogger(__name__)
 
 
-class WorkerWebServer(WebService):
+class WorkerWebService(WebService):
     '''
     Memgraph worker web server. For now it wraps the flask server.
     '''
@@ -19,8 +21,8 @@ class WorkerWebServer(WebService):
         '''
         Instantiates the flask web server.
         '''
-        super().__init__()
-        self.params_data = None
+        super().__init__(__name__)
+        self.params_data = {}
         self.is_simulation_running = False
         self.stats_data = None
         self.setup_routes()
@@ -29,13 +31,28 @@ class WorkerWebServer(WebService):
         '''
         Setup all routes.
         '''
-        super().__init__()
+        super().setup_routes()
+        self.add_route('/', self.index, 'GET')
+        self.add_route('/<path:path>', self.static, 'GET')
         self.add_route('/start', self.start, 'POST')
         self.add_route('/stop', self.stop, 'POST')
         self.add_route('/stats', self.stats, 'GET')
         self.add_route('/params', self.params_get, 'GET')
         self.add_route('/params', self.params_set, 'POST')
 
+    def index(self):
+        '''
+        Serves demo.html on the index path.
+        '''
+        print('index')
+        return self.server.send_static_file('demo.html')
+
+    def static(self, path):
+        '''
+        Serves other static files.
+        '''
+        return self.server.send_static_file(path)
+
     def run_simulation(self):
         '''
         If flag is_simulation_running flag is up (True) the executor
@@ -45,10 +62,31 @@ class WorkerWebServer(WebService):
         log.info('new simulation run')
 
         while self.is_simulation_running:
-            self.stats_data = wrapped_client(*self.params_data)
+            #   cython call TODO relase the GIL
+            # params = [
+            #     self.params_data['host'].encode('utf-8'),
+            #     self.params_data['port'].encode('utf-8'),
+            #     self.params_data['connections'],
+            #     self.params_data['duration'],
+            #     list(map(lambda x: x.encode('utf-8'),
+            #              self.params_data['queries']))
+            # ]
+            # data = wrapped_client(*params)
+
+            #   subprocess call
+            params = [
+                str(self.params_data['host']),
+                str(self.params_data['port']),
+                str(self.params_data['connections']),
+                str(self.params_data['duration'])
+            ] + list(map(lambda x: str(x), self.params_data['queries']))
+            exe = path.join(path.dirname(path.abspath(__file__)),
+                            "benchmark_json.out")
+            self.stats_data = subprocess_client([exe] + params)
 
     def start(self):
         '''
+        Starts run in a separate thread.
         '''
         self.is_simulation_running = True
         t = threading.Thread(target=self.run_simulation, daemon=True)
@@ -57,13 +95,14 @@ class WorkerWebServer(WebService):
 
     def stop(self):
         '''
+        Stops the worker run.
         '''
         self.is_simulation_running = False
         return ('', 204)
 
     def stats(self):
         '''
-        Returns the simulation stats. Queries per second.
+        Returns the worker stats. Queries per second.
         '''
         if not self.stats_data:
             return ('', 204)
@@ -72,13 +111,13 @@ class WorkerWebServer(WebService):
 
     def params_get(self):
         '''
-        Returns simulation parameters.
+        Returns worker parameters.
         '''
-        return jsonify(self.simulation_params.json_data())
+        return jsonify(self.params_data)
 
     def params_set(self):
         '''
-        Sets simulation parameters.
+        Sets worker parameters.
         '''
         data = request.get_json()
 
@@ -86,6 +125,6 @@ class WorkerWebServer(WebService):
 
         for param in param_names:
             if param in data:
-                setattr(self.params_data, param, data[param])
+                self.params_data[param] = data[param]
 
         return self.params_get()
diff --git a/demo/worker_web_service_init.py b/demo/worker_web_service_init.py
new file mode 100644
index 000000000..1804de575
--- /dev/null
+++ b/demo/worker_web_service_init.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+
+import logging
+
+from config import config
+from worker.worker_web_service import WorkerWebService
+
+
+def _init():
+    '''
+    Defines log level.
+    '''
+    logging.basicConfig(level=config.log_level)
+
+    return WorkerWebService().server
+
+app = _init()
+
+if __name__ == '__main__':
+    app.run(host=config.host, port=config.port)