2013-09-17

Linux: IO things

system activity
sar -P ALL
If %iowait is greater than 5%, something is DJ-ing with your disks.
iostat w/ nfs
iostat -mnh
This shown which block devices are being read/write right now. If Blk_read/s or Blk_wrtn/s is greater than 50, you can start being suspicious.

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