Solaris NFS Client increased CPU Usage With NFS4 & NetApp OnTap 7.3.7P2 (Doc ID 1581554.1)

Last updated on JULY 11, 2017

Applies to:

Solaris Operating System - Version 10 3/05 and later
Information in this document applies to any platform.

Symptoms

Solaris 10 server that mounts an NFSv4 volume from a NetApp filer running Data OnTap v 7.3.7P2
experiences a drop in performance defined as:

- a CPU with high system time - this might always be the same CPU, but there will be evidence of a "hot" thread or two.   Systems with few CPUs will of course have more obvious high sys time than those with many CPU strands.

-responses/jobs are very sluggish on the NFSv4 mount.

-uptime shows higher than normal load.  Again, this is relative to the number of available CPU strands.

Changes

 The NetApp was recently upgraded to the 7.3.7P2 version of Data OnTap.

Cause

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