vmstat or iostat may cause high %sys cpu usage in modctl() (Doc ID 2189974.1)

Last updated on AUGUST 17, 2017

Applies to:

Solaris Operating System - Version 11 11/11 to 11.2 [Release 11.0]
Solaris Operating System - Version 10 3/05 to 10 1/13 U11 [Release 10.0]
Information in this document applies to any platform.

Symptoms

When vmstat(1M) or iostat(1M) is run on a system with many LUNs, cpu %sys usage can get high.
Especially when vmstat is run in non-global zones, the impact is higher.

 

Cause

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