Prior to Linux 2.5.41, this includes IO-wait time. In: The number of interrupts per second, including the clock.Ĭs: The number of context switches per second.
So: Amount of memory swapped to disk (/s).īi: Blocks received from a block device (blocks/s).īo: Blocks sent to a block device (blocks/s). Si: Amount of memory swapped in from disk (/s). (-a option)Īctive: the amount of active memory. R: The number of processes waiting for run time.ī: The number of processes in uninterruptible sleep.īuff: the amount of memory used as buffers.Ĭache: the amount of memory used as cache. The simple command vmstat provides various information including IO usage: n causes the headers not to be reprinted regularly.ĭelay is the delay between updates in seconds. First lets take a look at the linux command for Disk IO stats:
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