сообщать статистику центрального процессора (ЦП) и статистику ввода / вывода для устройств и разделов (Report Central Processing Unit (CPU) statistics and input/output statistics for devices and partitions.)
Описание (Description)
The iostat command is used for monitoring system input/output
device loading by observing the time the devices are active in
relation to their average transfer rates. The iostat command
generates reports that can be used to change system configuration
to better balance the input/output load between physical disks.
The first report generated by the iostat command provides
statistics concerning the time since the system was booted,
unless the -y option is used (in this case, this first report is
omitted). Each subsequent report covers the time since the
previous report. All statistics are reported each time the iostat
command is run. The report consists of a CPU header row followed
by a row of CPU statistics. On multiprocessor systems, CPU
statistics are calculated system-wide as averages among all
processors. A device header row is displayed followed by a line
of statistics for each device that is configured.
The interval parameter specifies the amount of time in seconds
between each report. The count parameter can be specified in
conjunction with the interval parameter. If the count parameter
is specified, the value of count determines the number of reports
generated at interval seconds apart. If the interval parameter is
specified without the count parameter, the iostat command
generates reports continuously.
