From: Douglas McNaught <doug@mcnaught.org>
To: Scott Marlowe <smarlowe@g2switchworks.com>
Cc: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Steve Atkins <steve@blighty.com>
Cc: PostgreSQL General <pgsql-general@postgresql.org>
Cc: Pgsql-Performance ((E-mail)) <pgsql-performance@postgresql.org>
Subject: Re: [PERFORM] Arguments Pro/Contra Software Raid
Date: Wed, 10 May 2006 10:51:22 -0400
Message-ID: <87r732ndat.fsf@suzuka.mcnaught.org> (raw)
In-Reply-To: <1147272179.9755.18.camel@state.g2switchworks.com>
References: <200605100102.k4A12wa12853@candle.pha.pa.us>
<1147272179.9755.18.camel@state.g2switchworks.com>
Scott Marlowe <smarlowe@g2switchworks.com> writes:
> On Tue, 2006-05-09 at 20:02, Bruce Momjian wrote:
>> You do if the controller thinks the data is already on the drives and
>> removes it from its cache.
>
> Bruce, re-read what I wrote. The escalades tell the drives to TURN OFF
> THEIR OWN CACHE.
Some ATA drives would lie about that too IIRC. Hopefully they've
stopped doing it in the SATA era.
-Doug
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To: pgsql-performance@postgresql.org
Cc: doug@mcnaught.org, smarlowe@g2switchworks.com, pgman@candle.pha.pa.us, steve@blighty.com, pgsql-general@postgresql.org
Subject: Re: [PERFORM] Arguments Pro/Contra Software Raid
In-Reply-To: <87r732ndat.fsf@suzuka.mcnaught.org>
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