Friday, October 12, 2012

How To DrillDown ZFS Latency By Client

In some cases, UCM cluster will compete a shared file on  ZFS shared mount point, sometimes we need to know latency when UCM nodes do a  IO on ZFS shares.

Here is how we do it from ZFS UI. There are lots of metric on ZFS UI, you can play with them to suite your need.

Login ZFS UI -->click Analytics -->add statistics
-->choose "Protocol: NFSv3 operations per second broken down by latency"
-->right click the top latency  -->drilldown by client or share or file name...

You can see which client , which  share have the top help you dig down root cause.

see screenshot below

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