From: Josh Berkus <josh@agliodbs.com>
To: John A Meinel <john@arbash-meinel.com>
Cc: David Parker <dparker@tazznetworks.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: seqential vs random io
Date: Mon, 23 May 2005 15:32:35 -0700
Message-ID: <200505231532.35532.josh@agliodbs.com> (raw)
In-Reply-To: <429257ED.6020004@arbash-meinel.com>
References: <07FDEE0ED7455A48AC42AC2070EDFF7C746598@corpsrv2.tazznetworks.com>
<429257ED.6020004@arbash-meinel.com>
David,
> > I just got a question from one our QA guys who is configuring a RAID 10
> > disk that is destined to hold a postgresql database. The disk
> > configuration procedure is asking him if he wants to optimize for
> > sequential or random access. My first thought is that random is what we
> > would want, but then I started wondering if it's not that simple, and my
> > knowledge of stuff at the hardware level is, well, limited.....
> >
> > If it were your QA guy, what would you tell him?
Depends on the type of database. OLTP or Web == random access. Data
Warehouse == sequential access.
--
--Josh
Josh Berkus
Aglio Database Solutions
San Francisco
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To: pgsql-performance@postgresql.org
Cc: josh@agliodbs.com, john@arbash-meinel.com, dparker@tazznetworks.com
Subject: Re: seqential vs random io
In-Reply-To: <200505231532.35532.josh@agliodbs.com>
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