[Troubleshooting] Understanding iostat output

Updated -

The iostat utility is available from the sysstat package. For example

# yum whatprovides */iostat
sysstat-9.0.4-27.el6.x86_64 : The sar and iostat system monitoring commands
Repo        : @rhel-6-workstation-rpms
Matched from:
Filename    : /usr/bin/iostat

The iostat utility reads /proc/diskstats and computes the di...

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