linux-kernel - Re: Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE?

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Message-ID: <20110206174445.19419b0f@galadriel2.home>
Date:	Sun, 6 Feb 2011 17:44:45 +0100
From:	Emmanuel Florac <eflorac@...ellique.com>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	Stan Hoeppner <stan@...dwarefreak.com>,
	"Dr. David Alan Gilbert" <linux@...blig.org>,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-net@...r.kernel.org, Alan Piszcz <ap@...arrain.com>
Subject: Re: Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE?

Le Sun, 6 Feb 2011 08:46:08 -0500 (EST) vous écriviez:

> # for 3ware raid, use 16384 readahead, > 16384 readahead, no
> improvement blockdev --setra 16384 /dev/sda

Also try this :

echo 512 > /sys/block/sda/queue/nr_requests

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