My Oracle Support Banner

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

Last updated on JULY 13, 2019

Applies to:

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


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:



To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.