X-Original-To: pgsql-performance-postgresql.org@postgresql.org
Received: from localhost (mx1.hub.org [200.46.208.251])
	by postgresql.org (Postfix) with ESMTP id 720519FB333
	for <pgsql-performance-postgresql.org@postgresql.org>;
	Mon,  7 Aug 2006 09:07:45 -0300 (ADT)
Received: from postgresql.org ([200.46.204.71])
	by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024)
	with ESMTP id 87990-07 for
	<pgsql-performance-postgresql.org@postgresql.org>;
	Mon,  7 Aug 2006 09:07:34 -0300 (ADT)
X-Greylist: from auto-whitelisted by SQLgrey-
Received: from mail.logix-tt.com (mail.logix-tt.com [212.211.145.186])
	by postgresql.org (Postfix) with ESMTP id B23C09FB2AA
	for <pgsql-performance@postgresql.org>;
	Mon,  7 Aug 2006 09:07:34 -0300 (ADT)
Received: from kingfisher.intern.logix-tt.com (p549D25A1.dip0.t-ipconnect.de
	[84.157.37.161])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by mail.logix-tt.com (Postfix) with ESMTP id 215C4656B8
	for <pgsql-performance@postgresql.org>;
	Mon,  7 Aug 2006 14:09:31 +0200 (CEST)
Received: from [127.0.0.1] (localhost [127.0.0.1])
	by kingfisher.intern.logix-tt.com (Postfix) with ESMTP id 04009185CD0DC
	for <pgsql-performance@postgresql.org>;
	Mon,  7 Aug 2006 14:07:46 +0200 (CEST)
Message-ID: <44D72D11.7050203@logix-tt.com>
Date: Mon, 07 Aug 2006 14:07:45 +0200
From: Markus Schaber <schabi@logix-tt.com>
Organization: Logical Tracking and Tracing International AG, Switzerland
User-Agent: Thunderbird 1.5.0.4 (X11/20060713)
MIME-Version: 1.0
To: pgsql-performance@postgresql.org
Subject: Re: Performance with 2 AMD/Opteron 2.6Ghz and 8gig
References: <7F10D26ECFA1FB458B89C5B4B0D72C2B4E4D9B@sesrv12.wirelesscar.com>
	<Pine.OSX.4.61.0607290153401.10025@white.nat.fasttrackmonkey.com>
In-Reply-To: <Pine.OSX.4.61.0607290153401.10025@white.nat.fasttrackmonkey.com>
X-Enigmail-Version: 0.94.0.0
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=0.185 tagged_above=0 required=5 tests=AWL,
	FORGED_RCVD_HELO
X-Spam-Level: 
X-Archive-Number: 200608/66
X-Sequence-Number: 20251

Hi, Charles,

Charles Sprickman wrote:

> I've also got a 1U with a 9500SX-4 and 4 drives.  I like how the 3Ware
> card scales there - started with 2 drives and got "drive speed"
> mirroring. Added two more and most of the bonnie numbers doubled.  This
> is not what I'm used to with the Adaptec SCSI junk.

Well, for sequential reading, you should be able to get double drive
speed on a 2-disk mirror with a good controller, as it can balance the
reads among the drives.

Markus
-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org