With 'svc:/system/sp/management:default' Enabled, the OHMP fwrxmldiff Daemon May Cause IO Service Time Spikes

(Doc ID 2321805.1)

Last updated on OCTOBER 31, 2017

Applies to:

Solaris Operating System - Version 10 3/05 to 11 u1 10/12 [Release 10.0 to 11.0]
Information in this document applies to any platform.

Symptoms

Note: Always check and replace bad or suspect devices

The following shows the output from iostat having replaced several F80 Flash devices under the suspicion the IO Disk Service Time was caused by a hardware issue.  The iostat command has been piped through awk to look for instances where the disk service time (asvc_t) is greater than 10 milliseconds.  A flash device should perform within 5ms even under heavy workloads

Without filtering, iostat showed the high disk service times were seen every 30seconds or so and never lasted longer than a 1 second iteration.

 

Cause

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