Re: Low Budget Performance - Mailing list pgsql-performance

From Andrew Sullivan
Subject Re: Low Budget Performance
Date
Msg-id 20021029123110.M25851@mail.libertyrms.com
Whole thread Raw
In response to Re: Low Budget Performance  ("Josh Berkus" <josh@agliodbs.com>)
Responses Re: Low Budget Performance  (Ron Johnson <ron.l.johnson@cox.net>)
List pgsql-performance
On Tue, Oct 29, 2002 at 09:10:31AM -0800, Josh Berkus wrote:
>
> Out of curiousity, what is it with RAID 5?   I've encountered the poor
> write performance too ... any idea why?

It largely depends on the controller and te implementation.  It has
to do with the cost of calculating the checksum.  If the
implementation of that is inefficient, the writes become inefficient.

A

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Andrew Sullivan                         204-4141 Yonge Street
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<andrew@libertyrms.info>                              M2P 2A8
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