VMWare and Oracle IO
- From: Jared Still <jkstill@xxxxxxxxx>
- To: Oracle-L Freelists <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 7 Oct 2014 08:29:15 -0700
Fellow Oracleites:
I have been investigating a client database or two that have been
experiencing IO problems since being virtualized via VMWare.
SA's claim no IO issues, but we have seen an Oracle IO take up to 3.5
seconds.
Seems slow to me.
One thing I have learned is the the priority settings on VMWare disk shares
can cause this issue for lower priority systems when the favored system(s)
are requesting a lot of IO.
What other gotcha's should we be looking for?
Thanks!
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
Principal at Pythian
Pythian Blog http://www.pythian.com/blog/author/still/
Oracle Blog: http://jkstill.blogspot.com
Home Page: http://jaredstill.com
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