linux-kernel - Re: PROBLEM: SATA AHCI driver significant throughput loss in 2.6.22-rc5-g75154f40-dirty

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Message-ID: <468A07A0.5010302@gmail.com>
Date:	Tue, 03 Jul 2007 17:24:00 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>
CC:	Dan <metalifloyd@...il.com>, linux-kernel@...r.kernel.org,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: PROBLEM: SATA AHCI driver significant throughput loss in 2.6.22-rc5-g75154f40-dirty

Michal Piotrowski wrote:
> Hi,
> 
> [adding linux-ide to cc]
> 
> On 27/06/07, Dan <metalifloyd@...il.com> wrote:
>> Something changed with the AHCI SATA driver in the latest git version.
>> With 2.6.21 I get ~49MB/sec according to hdparm. Using the latest git
>> version I only get ~8MB/sec. I've attached my .config and have
>> included some info about my system below. Please let me know if you
>> need more information or if I can help test anything.

Please post boot dmesgs of before and after.

-- 
tejun
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