[ Thanks to js61351 for this link.
]
“On Windows, performance reports are gained with a simple,
built-in tool like the System Monitor, or with an expensive, highly
engineered diagnostic package from a vendor. If your shop has just
migrated to Linux, you’ll find the same situation: The built-in
tools are always available from the command line; the highly
engineered diagnostic packages are still expensive. Let’s take look
at some simple Linux tools.“Most Linux tools have ‘stat’ as the last four letters of their
name, ‘stat’ being short for ‘status.’ Some of the most commonly
used performance reporting commands are: vmstat, iostat, netstat,
nfsstat, pqstat, lpstat and mailstat. There is, however, a second
set of stat commands: stat, fstat, statfs and fstatfs. These other
tools analyze files and filesystems on the disk. They aren’t
directly associated with performance…”