Sysstat

  (system statistics) is a collection of performance monitoring tools for Linux. It is available on Unix and Unix-like operating systems.

Software included in sysstat package:
 * sar [6], Collect, report, or save system activity information.
 * iostat (1) reports basic CPU statistics and input/output statistics for devices, partitions and network filesystems.
 * mpstat(1) reports individual or combined processor related statistics.
 * pidstat(1) reports statistics for Linux tasks (processes) : I/O, CPU, memory, etc.
 * nfsiostat(1) reports input/output statistics for network filesystems (NFS).
 * cifsiostat(1) reports I/O statistics for CIFS resources.