The sysstat package contains the sar, sadf, iostat, mpstat, and pidstat commands for Linux. GPL

sysstat 8.1.1
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.

The sysstat package contains the sar, sadf, iostat and mpstat, commands for Linux. GPL

sysstat 7.1.3 package contains the sar, sadf, iostat and mpstat, commands for Linux. The sar command collects and reports system activity information. The sadf command may be used to display data collected by sar in various formats (XML, database-friendly, etc.). The iostat command reports CPU statistics and I/O statistics for tty devices and disks. The mpstat command reports global and per-processor statistics. The information collected by sar can be saved in a file in a binary format for future inspection. 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. Both UP and SMP machines are fully supported.