Received: from localhost (maia-4.hub.org [200.46.204.183])
	by postgresql.org (Postfix) with ESMTP id 314469FA2CB
	for <pgsql-performance-postgresql.org@postgresql.org>;
	Thu, 30 Nov 2006 23:00:21 -0400 (AST)
Received: from postgresql.org ([200.46.204.71])
	by localhost (mx1.hub.org [200.46.204.183]) (amavisd-new, port 10024)
	with ESMTP id 71623-10 for
	<pgsql-performance-postgresql.org@postgresql.org>;
	Thu, 30 Nov 2006 23:00:09 -0400 (AST)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.4
Received: from smtp5.clear.net.nz (smtp5.clear.net.nz [203.97.33.68])
	by postgresql.org (Postfix) with ESMTP id 961969FA2CA
	for <pgsql-performance@postgresql.org>;
	Thu, 30 Nov 2006 23:00:09 -0400 (AST)
Received: from [192.168.1.11] (218-101-28-65.dsl.clear.net.nz [218.101.28.65])
	by smtp5.clear.net.nz (CLEAR Net Mail)
	with ESMTP id <0J9K00AN1R068A70@smtp5.clear.net.nz> for
	pgsql-performance@postgresql.org; Fri, 01 Dec 2006 16:00:07 +1300 (NZDT)
Date: Fri, 01 Dec 2006 16:00:05 +1300
From: Mark Kirkwood <markir@paradise.net.nz>
Subject: Re: Bad iostat numbers
In-reply-to: <456F9262.4080207@boreham.org>
To: david_list@boreham.org
Cc: carlos.reimer@opendb.com.br, pgsql-performance@postgresql.org
Message-id: <456F9AB5.1070409@paradise.net.nz>
MIME-version: 1.0
Content-type: text/plain; charset=ISO-8859-1; format=flowed
Content-transfer-encoding: 7bit
References: <PEEPKDFEHHEMKBBFPOOKKEHCDKAA.carlos.reimer@opendb.com.br>
	<456F9262.4080207@boreham.org>
User-Agent: Thunderbird 1.5.0.8 (X11/20061129)
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Archive-Number: 200611/285
X-Sequence-Number: 22055

David Boreham wrote:

>
> These number look a bit strange. I am wondering if there is a hardware 
> problem on one of the drives
> or on the controller. Check in syslog for messages about disk timeouts 
> etc. 100% util but 6 writes/s
> is just wrong (unless the drive is a 1980's vintage floppy).
> 

Agreed - good call, I was misreading the wkB/s as wMB/s...