Re: [PATCHES] O_DIRECT for WAL writes

From: Curt Sampson <cjs(at)cynic(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Greg Stark <gsstark(at)mit(dot)edu>, ITAGAKI Takahiro <itagaki(dot)takahiro(at)lab(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCHES] O_DIRECT for WAL writes
Date: 2005-06-23 03:54:15
Message-ID: Pine.NEB.4.62.0506231253040.12377@angelic.cynic.net
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On Wed, 22 Jun 2005, Tom Lane wrote:

> [ shudder ] I can see the complaints now: "Merely starting up Postgres
> cut my overall system performance by a factor of 10!

Yeah, quite the scenario.

> This can *not* be default behavior, and unfortunately that limits its
> value quite a lot.

Indeed. Maybe it's best just to document this stuff for the various
OSes, and let the admins deal with configuring their machines.

But you know, it might be a reasonable option switch, or something.

cjs
--
Curt Sampson <cjs(at)cynic(dot)net> +81 90 7737 2974 http://www.NetBSD.org
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