From: Rosser Schwarz <rosser.schwarz@gmail.com>
To: Alexandre Barros <alexandre@vectorx.com.br>
Cc: postgres performance <pgsql-performance@postgresql.org>
Subject: Re: performance drop on RAID5
Date: Wed, 24 Aug 2005 11:35:01 -0500
Message-ID: <37d451f70508240935315add63@mail.gmail.com> (raw)
In-Reply-To: <430C8779.9080500@vectorx.com.br>
References: <430C8779.9080500@vectorx.com.br>
On 8/24/05, Alexandre Barros <alexandre@vectorx.com.br> wrote:
> i wouldn't be so stunned if the newer machine was ( say ) twice faster
> than the older server, but over three times faster is disturbing.
RAID5 on so few spindles is a known losing case for PostgreSQL. You'd
be far, far better off doing a pair of RAID1 sets or a single RAID10
set.
/rls
--
:wq
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To: pgsql-performance@postgresql.org
Cc: rosser.schwarz@gmail.com, alexandre@vectorx.com.br
Subject: Re: performance drop on RAID5
In-Reply-To: <37d451f70508240935315add63@mail.gmail.com>
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