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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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5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
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Ben Wallach
January 23, 2013 06:44PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1823
Scott Nemes
January 24, 2013 10:59AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
2055
Ben Wallach
January 24, 2013 12:16PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1658
Scott Nemes
January 24, 2013 01:41PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1674
Ben Wallach
January 24, 2013 02:29PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1575
Scott Nemes
January 24, 2013 03:14PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1816
Ben Wallach
January 24, 2013 03:36PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1755
Scott Nemes
January 24, 2013 03:44PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1860
Ben Wallach
January 25, 2013 09:28AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1776
Scott Nemes
January 25, 2013 09:51AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1947
Rick James
January 26, 2013 12:40AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1751
Ben Wallach
January 26, 2013 09:57AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1953
Rick James
January 26, 2013 01:35PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1709
Scott Nemes
January 26, 2013 02:25PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
2049
Ben Wallach
January 26, 2013 03:36PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1665
Rick James
January 26, 2013 06:02PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1916
Ben Wallach
January 26, 2013 07:18PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1817
Rick James
January 26, 2013 09:33PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1586
Ben Wallach
January 27, 2013 11:01AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1730
Scott Nemes
January 27, 2013 12:44PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1691
Ben Wallach
January 27, 2013 03:40PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1618
Ben Wallach
January 28, 2013 11:13AM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1587
Ben Wallach
February 01, 2013 03:35PM
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1682
Scott Nemes
February 01, 2013 03:37PM


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