From: Tejun Heo <htejun@gmail.com>
To: Andrew Lyon <andrew.lyon@gmail.com>
Cc: linux-kernel@vger.kernel.org, Jens Axboe <axboe@suse.de>
Subject: Re: JMicron 20360/20363 AHCI Controller much slower with 2.6.18
Date: Fri, 22 Sep 2006 02:00:59 +0900 [thread overview]
Message-ID: <4512C54B.9060705@gmail.com> (raw)
In-Reply-To: <f4527be0609210104p3c6c4933ke77d8372f6dd3848@mail.gmail.com>
Andrew Lyon wrote:
> Hi,
>
> I have a Gigabyte GA_965P_DS3 with Core 2 Duo CPU, wd raptor connected
> to onboard JMicron 20360/20363 AHCI Controller, with 2.6.18 the drive
> is very slow:
>
> beast ~ # uname -a
> Linux beast 2.6.18 #1 SMP Wed Sep 20 15:04:24 BST 2006 i686 Intel(R)
> Core(TM)2 C
> PU 6600 @ 2.40GHz GNU/Linux
> beast ~ # hdparm -t /dev/sda
>
> /dev/sda:
> Timing buffered disk reads: 100 MB in 3.02 seconds = 33.10 MB/sec
Which IO scheduler are you using? If you're using anticipatory or cfq,
can you try deadline?
Thanks.
--
tejun
next prev parent reply other threads:[~2006-09-21 17:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-21 8:04 JMicron 20360/20363 AHCI Controller much slower with 2.6.18 Andrew Lyon
2006-09-21 17:00 ` Tejun Heo [this message]
2006-09-21 17:43 ` Jens Axboe
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