If you've ever experienced a system slowdown on Linux, it could be hardware-related. Here are five commands to help you find the problem to get back up to speed fast.

That is where sar comes in. Enable sar Logging sar is a classic Linux tool that is part of the sysstat package and should be available in just about any major distribution with your regular package ...

The sar command, deriving from Solaris and sometimes available on Linux systems as well, is a great tool for looking at memory usage over a long period of time.