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Re: High cpu usage after many inserts - Mailing list pgsql-general

From Greg Williamson
Subject Re: High cpu usage after many inserts
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Msg-id 83959.19769.qm@web46110.mail.sp1.yahoo.com
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In response to Re: High cpu usage after many inserts  (Jordan Tomkinson <jordan@moodle.com>)
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--- On Wed, 2/25/09, Jordan Tomkinson <jordan@moodle.com> wrote:

<...>

> What exactly is wrong with RAID5 and what should we have
> gone with?

RAID10 is often used. As others have pointed out, it is very slow for random writes. It also has issues that expose
yourdata to total loss, see for instance <http://www.miracleas.com/BAARF/RAID5_versus_RAID10.txt>. 

HTH,

Greg Williamson

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