I/O performance of mpt(7d) connected devices can be low (Doc ID 1678366.1)

Last updated on MAY 02, 2016

Applies to:

Solaris SPARC Operating System - Version 10 10/08 U6 and later
Information in this document applies to any platform.

Symptoms

There is a known issue with the mpt driver that slows the I/O throughput down while increasing the CPU sys percentage as visible in vmstat and mpstat. You will notice the following symptoms:

  

Cause

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