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From: Hannu Krosing <hannu@skype.net>
To: Michael Stone <mstone+postgres@mathom.us>
Cc: pgsql-hackers@postgresql.org
Cc: pgsql-performance@postgresql.org
Subject: Re: [PERFORM] A Better External Sort?
Date: Wed, 05 Oct 2005 13:32:52 +0300
Message-ID: <1128508373.8561.28.camel@fuji.krosing.net> (raw)
In-Reply-To: <20051005094315.GX2241@mathom.us>
References: <31833713.1128111650174.JavaMail.root@elwamui-polski.atl.sa.earthlink.net>
	<200510031334.02030.josh@agliodbs.com>
	<1128372151.28509.1.camel@toonses.gghcwest.com>
	<200510031416.15620.josh@agliodbs.com>
	<1128375790.5882.18.camel@fuji.krosing.net>
	<20051005094315.GX2241@mathom.us>

On K, 2005-10-05 at 05:43 -0400, Michael Stone wrote:
> On Tue, Oct 04, 2005 at 12:43:10AM +0300, Hannu Krosing wrote:
> >Just FYI, I run a count(*) on a 15.6GB table on a lightly loaded db and
> >it run in 163 sec. (Dual opteron 2.6GHz, 6GB RAM, 6 x 74GB 15k  disks in
> >RAID10, reiserfs). A little less than 100MB sec.
> 
> And none of that 15G table is in the 6G RAM?

I believe so, as there had been another query running for some time,
doing a select form a 50GB table.

-- 
Hannu Krosing <hannu@skype.net>

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