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Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
Posted by: Rick James
Date: January 26, 2013 09:33PM

Old RAID:
"do not provide the performance advantages of cache or battery backup"
-- http://www.dell.com/downloads/global/power/ps2q08-20080312-Dixit.pdf

New RAID:
also no cache:
-- http://www.dell.com/content/topics/topic.aspx/global/products/pvaul/topics/en/us/raid_controller?c=us&l=en&cs=555

Is the OS the same? Which filesystem do you use? I don't know the Fedora options, like XFS (possibly best), ZFS, EXT3 (not good), etc.

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Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
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January 26, 2013 09:33PM


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