Linux and Unix vmstat command
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About vmstat
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Display information about the kernel threads, virtual memory, disks, traps, and CPU activity.
vmstat [-V] [-n] [delay [count]]
| -V | Print version information. |
| -n | causes the headers not to be reprinted regularly. |
| -a | print inactive/active page stats. |
| -d | prints disk statistics |
| -D | prints disk table |
| -p | prints disk partition statistics |
| -s | prints vm table |
| -m | prints slabinfo |
| -S | unit size unit size k:1000 K:1024 m:1000000 M:1048576 (default is K) |
| delay | delay between updates in seconds. |
| count | number of updates. |
vmstat
Running the vmstat command with no extra options would display information similar to the below information.
| procs | -----------memory---------- | ---swap-- | -----io---- | --system-- | ----cpu---- |
| r b 0 0 | swpd free buff cache 7412 18872 18044 110132 | si so 0 0 | bi bo 2 7 | in cs us 26 22 2 | sy id wa 1 96 0 |