vmstat — Report Virtual Memory Statistics

Synopsis

/bin/vmstat [-cisS][disks][interval [count]]

Description

Use the vmstat command to report virtual memory statistics for process, virtual memory, disk, trap, and CPU activity.

On MP systems, vmstat averages the number of CPUs into the output. For per-process statistics, see mpstat(1).

vmstat supports statistics only for certain devices. For more general system statistics, use sar(1), iostat(1M), or sar(1M).

Without options, vmstat displays a one-line summary of the virtual memory activity since the system was booted.

During execution of this kernel status command, the state of the kernel can change. An example would be CPUs going online or offline. vmstat reports this change as <<State change>> ...

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