From: Brendan Duddridge <brendan@clickspace.com>
To: Jim C. Nasby <jnasby@pervasive.com>
Cc: Eric Lam <elam@lisasoft.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Slow restoration question
Date: Tue, 2 May 2006 12:40:43 -0600
Message-ID: <622925BE-A31E-42FD-AF6A-68DDF3B4A1B7@clickspace.com> (raw)
In-Reply-To: <20060502171617.GZ97354@pervasive.com>
References: <444F24E9.2010907@lisasoft.com>
<20060502171617.GZ97354@pervasive.com>
Everyone here always says that RAID 5 isn't good for Postgres. We
have an Apple Xserve RAID configured with RAID 5. We chose RAID 5
because Apple said their Xserve RAID was "optimized" for RAID 5. Not
sure if we made the right decision though. They give an option for
formatting as RAID 0+1. Is that the same as RAID 10 that everyone
talks about? Or is it the reverse?
Thanks,
____________________________________________________________________
Brendan Duddridge | CTO | 403-277-5591 x24 | brendan@clickspace.com
ClickSpace Interactive Inc.
Suite L100, 239 - 10th Ave. SE
Calgary, AB T2G 0V9
http://www.clickspace.com
On May 2, 2006, at 11:16 AM, Jim C. Nasby wrote:
> On Wed, Apr 26, 2006 at 05:14:41PM +0930, Eric Lam wrote:
>> all dumpfiles total about 17Gb. It has been running for 50ish hrs
>> and up
>> to about the fourth file (5-6 ish Gb) and this is on a raid 5 server.
>
> RAID5 generally doesn't bode too well for performance; that could be
> part of the issue.
> --
> Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
> Pervasive Software http://pervasive.com work: 512-231-6117
> vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
>
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To: pgsql-performance@postgresql.org
Cc: brendan@clickspace.com, jnasby@pervasive.com, elam@lisasoft.com
Subject: Re: Slow restoration question
In-Reply-To: <622925BE-A31E-42FD-AF6A-68DDF3B4A1B7@clickspace.com>
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