The sar command can provide detailed system metrics on just about every aspect of system performance. You can query it on as as-needed basis or set it up to provide daily reports. Sar is a system ...

The sar command, native to Solaris and often installed on Linux systems via the sysstat package, is extremely useful in analyzing current and recent system performance. On the other hand, if you would ...

If the sysstat package isn’t installed on your Linux system (which it generally isn’t by default), you can easily grab a copy with your favorite Linux installer — typically one of the following ...