Accessing the Sysstat Package Utilities
The sysstat package provides utilities for Linux system performance monitoring. The sysstat package utilities derive the raw data from the kernel counters, prepares them for display, and stores the data from the processes' execution history in a database. Some of these utilities store the information in a data file after collecting the data, and calculate the mean values; this makes it possible for the user to have access to the data of interest at predefined time intervals. The following is the list of utilities provided by the sysstat package:

mpstat
Reports individual or combined CPU related statistics.

iostat
Reports CPU statistics and I/O statistics for devices, partitions, and the network file system.

pidstat
Reports statistics for Linux processes, including disk I/O, CPU and memory usage.

tapestat
Reports statistics for tape drives connected to the system.

cifsiostat
Reports statistics on shared file systems, printers, or serial ports over a network.

sar
Collects, reports, and saves system activity information (such as CPU, memory, disks, and network interfaces usage statistics).

свернуть