36.14.  vmstat, iostat, and mpstat

The utility vmstat reports virtual memory statistics. It reads the files /proc/meminfo, /proc/stat, and /proc/*/stat. It is useful to identify bottlenecks of the system performance. The command iostat reports statistics about the CPU and input and output for devices and partitions. The displayed information is taken from the files /proc/stat and /proc/partitions. The output can be used to better balance the input and output load between hard disks. The command mpstat reports CPU-related statistics.

SUSE LINUX Administration Guide 9.3