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+Monitor Linux System Performance Using Nmon
+================================================================================
+Nmon (also known as Nigel’s Monitor) is a computer performance system monitor tool for the AIX and Linux operating systems developed by IBM employee Nigel Griffiths. The tool displays onscreen or saves to a data file the operating system statistics to aid in the understanding of computer resource use, tuning options and bottlenecks. This system benchmark tool gives you a huge amount of important performance information in one go with a single command. You can easily monitor your system’s CPU, memory, network, disks, file systems, NFS, top processes, resources and power micro-partition information using Nmon.
+
+### Installing Nmon ###
+
+By default nmon is available in the Ubuntu repository. You can easily install nmon by running the following command:
+
+    sudo apt-get install nmon
+
+How to Use Nmon to Monitor Linux Performance
+
+Once the installation has been finished, you can launch it by typing the `nmon` command in the terminal.
+
+    nmon
+
+You wI’ll see the following output:
+
+![nmon-output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon-output.png)
+
+You can see from the above screenshot that the nmon command-line utility runs completely in interactive mode, and you can easily toggle statistics using shortcut keys.
+
+You can use the following nmon keyboard shortcuts to display different system stats:
+
+- `q` : to stop and exit Nmon
+- `h` : to see help screen
+- `c` : see CPU stats
+- `m` : see memory stats
+- `d` : see disk stats
+- `k` : see kernel stats
+- `n` : see network stats
+- `N` : see NFS stats
+- `j` : see file system stats
+- `t` : see top process
+- `V` : see virtual memory stats
+- `v` : verbose mode
+
+### Check CPU by Processor ###
+
+If you would like to collect some statistics on CPU performance, you should hit the c key on the keyboard.
+
+After hitting the c key you wI’ll see the following output.
+
+![nmon_cpu_output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon_cpu_output.png)
+
+### Check Top Process Statistics ###
+
+To get stats on top processes that are running on your system, press the t key on your keyboard.
+
+You will see the following output.
+
+![nmon_process_output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon_process_output.jpg)
+
+### Check Network Statistics ###
+
+To get the network stats of your Linux system, just press the n key on your keyboard.
+
+You wI’ll see the following output:
+
+![n_network_output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon_network_output.png)
+
+### Disk I/O Graphs ###
+
+Use the `d` key to get information about disks.
+
+You wI’ll see the following output:
+
+![nmon_disk_output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon_disk_output.png)
+
+### Check Kernel Information ###
+
+A most important key to use with this tool is `k;` it is used to display some brief information on the kernel of your system.
+
+You will see the following output after hitting the `k` key on your keyboard.
+
+![nmon_kernel_output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon_kernel_output.png)
+
+### Get System Information ###
+
+A very useful key for every system admin is the `r` key which is used to give information on different resources such as machine architecture, operating system version, Linux version and CPU.
+
+You will see the following output by hitting the `r` key.
+
+![nmon_system_output](https://www.maketecheasier.com/assets/uploads/2015/12/nmon_system_output.png)
+
+### Conclusion ###
+
+There are many other tools that can do the same job of the Nmon, but Nmon is so usee friendly for a Linux beginner. Please feel free to comment if you have any questions.
+
+--------------------------------------------------------------------------------
+
+via: https://www.maketecheasier.com/monitor-linux-system-performance/
+
+作者：[Hitesh Jethva][a]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]:https://www.maketecheasier.com/author/hiteshjethva/