Linux - (Hardware|Resource) Performance Monitoring Counters (Memory, Disk, CPU)

About

This page is about the management operating system metrics in the Linux System.

Collect

All command line tools are collector that collects and sends the metrics.

They may send them:

• into the console graphically
• or to a metrics server

For instance:

• for processes, the metrics are collected via the the proc file system. For instance, the /proc/swaps and /proc/meminfo files contain information about memory usage on your system.

Utilities

Command Line

This section is about command line utility that sends the metrics by default to the terminal.

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• See Sysstat package
• See perf package
• Dstat is a versatile replacement for vmstat , iostat, netstat and ifstat. (Written in python)
• ifstat(1), iftop(8), iostat(1), mpstat(1), netstat(1), nfsstat(1), nstat, vmstat(1), xosview(1)

ps -ef|grep <process> 

• top
• nmon
• Linux - Vmstat (Virtual memory statistics)
• Linux - Free command (Memory)
• Linux - Top Command for the CPU
• iotop for the IO
• shared memory monitoring using the ipcs -m command.
• ps - processes data from multiple systems and treat it as a single data stream
• glance
• Tiptop
• Linux - du (Disk Usage)

Collector

This section is about collector that sends the metrics to a backend server

• Prometheus node exporter
• Collectl to capture resource utilization metrics.
• collectl and colmux: colmux is a collectl multiplexor, which allows one to collect

Gui - The system monitor of the Gnome Desktop

To start it:

• with the desktop GUI, System menu > Choose Administration > System Monitor option.
• at the shell prompt, type the following command :

  gnome-system-monitor