linux-kernel - SATA Harddisk speed drop of 100 MB/s

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Message-ID: <20070620224847.GA5488@alinoe.com>
Date:	Thu, 21 Jun 2007 00:48:47 +0200
From:	Carlo Wood <carlo@...noe.com>
To:	linux-kernel@...r.kernel.org
Subject: SATA Harddisk speed drop of 100 MB/s

hdparm -tT gives over 160 MB/s for my tripple 10k rpm Raptor RAID5
on 2.6.18, as expected.

In 2.6.22-rc5 this dropped to only 60 MB/s !

Is this a known issue?

I also measured it with bonnie; I get 108 MB/s reading speed on
2.6.18 and only 68 MB/s on 2.6.22-rc5.

-- 
Carlo Wood <carlo@...noe.com>
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