System Activity Report is a Unix System V-derived system monitor command used to report on various system loads, including CPU activity, memory/paging, interrupts, device load, network and swap space utilization. Sar uses filesystem for gathering information.

Platform support

Sar was originally developed for the Unix System V operating system; it is available in AIX, HP-UX, Solaris and other System V based operating systems but it is not available for macOS or FreeBSD. Prior to 2013 there was a tool, but it is now deprecated. Most Linux distributions provide utility through the package.

Syntax

sar [-flags] [ -e time ] [ -f filename ] [-i sec ] [ -s time ]

Example

Sysstat package

Additional to command, Linux sysstat package in Debian, RedHat Enterprise Linux and SuSE provides additional reporting tools:

Footnotes