Summary:
Benchmark planning and estimating indexed ScanAll. According to the benchmark,
caching speeds up the whole process of planning and estimation by a factor of
2. Most of the performance gain is in the `CostEstimator` itself, due to plenty
of calls to `VerticesCount` when estimating all of the generated plans.
Reviewers: mislav.bradac, florijan
Reviewed By: mislav.bradac
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D765
Summary: For the time being we'll go with vector and a custom iterator for know-destination-vertex lookups, but this benchmark might be handy to keep for future work.
Reviewers: buda, mislav.bradac, teon.banek
Reviewed By: mislav.bradac
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D762
Summary: Disabling it because it seems that (singleton + fixture + multiple_benchmarks) cause occasional crashes of the test. The more important test is left enabled.
Reviewers: mislav.bradac, buda
Reviewed By: mislav.bradac
Differential Revision: https://phabricator.memgraph.io/D696
Summary:
It's purpose is to illustrate that currently expansion from a single node (with a fixed degree) does not execute in consistent time, but the execution time depends on the rest of the graph (that's disconnected). Current benchmark results:
```
florijan@florxps:~/Memgraph/memgraph/build$ ./tests/benchmark/expansion
Run on (8 X 3500 MHz CPU s)
2017-08-17 16:06:30
***WARNING*** CPU scaling is enabled, the benchmark real time measurements may be noisy and will incur extra overhead.
***WARNING*** Library was built as DEBUG. Timings may be affected.
Benchmark Time CPU Iterations
-------------------------------------------------------------------------
ExpansionBenchFixture/Match/1 0 ms 0 ms 4903
ExpansionBenchFixture/Match/1024 0 ms 0 ms 4785
ExpansionBenchFixture/Match/1024k 0 ms 0 ms 4623
ExpansionBenchFixture/Expand/1 9 ms 9 ms 83
ExpansionBenchFixture/Expand/1024 20 ms 20 ms 41
ExpansionBenchFixture/Expand/1024k 3430 ms 3430 ms 1
```
Reviewers: mislav.bradac, buda
Reviewed By: mislav.bradac
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D676
Summary:
- GC changed to evaluate old records w.r.t. the oldest transaction's id AND snapshot, as opposed to only id
- MVCC hints exp+aborted race condition prevented
- minor MVCC refactors and cleanups
- minor Transaction refactors and cleanups
Reviewers: buda, dgleich
Reviewed By: buda, dgleich
Subscribers: dtomicevic, pullbot
Differential Revision: https://phabricator.memgraph.io/D434
Summary:
CMake is smart enough to transitively detect dependencies and link them
appropriately. Therefore, it is enough that we put all libraries that
memgraph uses to the dependency list of memgraph_lib and memgraph_pic
targets.
Patch the fmt library for C++14 and higher
fmt library would detect that C++11 is supported and then put the
compiler flag. This flag was set so it overrides parent project compiler
flags. This override from fmt would prevent us from using C++14
features. New version (3.1) of fmt resolves this issue, but it hasn't
been released yet. Therefore, this commit updates the script which
clones fmt to use the released 3.0.1 version and apply the fix on that.
Reviewers: dgleich, buda
Reviewed By: buda
Subscribers: pullbot
Differential Revision: https://phabricator.memgraph.io/D441
Summary:
The previous behavior was incorrect, since the second transaction
cannot see the record created in the first, because it commited later.
Reviewers: florijan, buda, dgleich
Reviewed By: dgleich
Subscribers: pullbot, matej.gradicek
Differential Revision: https://phabricator.memgraph.io/D390
Summary:
- Aggregation LogicalOperation added, with tests.
- Added capabilities to TypedValue (hash, bool-equality)
to support std::unordered_map<TypedValue>.
- Removed some bad code from utils/hashing/fnv and added
a hashing function for collections.
Reviewers: buda, mislav.bradac, teon.banek
Reviewed By: teon.banek
Subscribers: lion, pullbot
Differential Revision: https://phabricator.memgraph.io/D252
Summary: Added Benchmark Test for ConcurrentMap; Added PairGenerator to utils::random
Test Plan: manual
Reviewers: buda
Subscribers: buda
Differential Revision: https://memgraph.phacility.com/D7
Summary: Created Basic Random Utility; Created folder for benchmark query stripper
Test Plan: manual
Reviewers: buda
Subscribers: buda
Differential Revision: https://memgraph.phacility.com/D6
