FreeBSD iostat – A Quick Glance

submited 15 April 2021

iostat provides a window into the i/o effort of the storage subsystem. You can use it to determine usage patterns, bottlenecks and poor behavior at a glance. It can produce data to support conclusions and suggest further avenues of investigation when used judiciously. In this article, we will dissect its output and introduce disk subsystem troubleshooting using statistical output from iostat.

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