The sysstat package contains the sar, sadf, iostat, mpstat, and pidstat commands for Linux. The sar command collects and reports system activity information. The statistics reported by sar concern I/O transfer rates, paging activity, process-related activites, interrupts, network activity, memory and swap space utilization, CPU utilization, kernel activities, and TTY statistics, among others. The sadf command may be used to display data collected by sar in various formats. The iostat command reports CPU statistics and I/O statistics for tty devices and disks. The pidstat command reports statistics for Linux processes. The mpstat command reports global and per-processor statistics. License: GNU General Public License (GPL) Changes: mpstat and sar didn't parse /proc/interrupts correctly when some CPUs had been disabled. This is now fixed. This release also fixes a bug in pidstat which caused confusion between PID and TID, resulting in erroneous statistics values being displayed. The iconfig script has been updated: Help for the --enable-compress-manpg parameter is now available, help for the --enable-install-cron parameter has been updated, and the parameter cron_interval has been added.

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