linux-kernel - Re: RAID-1 performance under 2.4 and 2.6

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Message-ID: <20080326085639.3c7d3152@galadriel.home>
Date:	Wed, 26 Mar 2008 08:56:39 +0100
From:	Emmanuel Florac <eflorac@...ellique.com>
To:	"Bart Van Assche" <bart.vanassche@...il.com>
Cc:	"Chris Snook" <csnook@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: RAID-1 performance under 2.4 and 2.6

Le Wed, 26 Mar 2008 08:15:15 +0100 vous écriviez:

> If you want to benchmark write speed, you should add
> oflag=direct,dsync to the dd command line. For benchmarking read speed
> you should specify iflag=direct. Or, even better, you can use xdd with
> the flags -dio -processlock.

Thanks for the tip, I'll try these.

-- 
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Emmanuel Florac               www.intellique.com   
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