From: Jens Axboe <axboe@kernel.dk>
To: Tejun Heo <htejun@gmail.com>
Cc: Andrew Lyon <andrew.lyon@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: JMicron 20360/20363 AHCI Controller much slower with 2.6.18
Date: Thu, 21 Sep 2006 19:43:11 +0200 [thread overview]
Message-ID: <20060921174310.GK24362@kernel.dk> (raw)
In-Reply-To: <4512C54B.9060705@gmail.com>
On Fri, Sep 22 2006, Tejun Heo wrote:
> 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?
It would also be nice to have a way to turn NCQ off, btw, just to rule
that out as well.
--
Jens Axboe
prev parent reply other threads:[~2006-09-21 17:38 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
2006-09-21 17:43 ` Jens Axboe [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060921174310.GK24362@kernel.dk \
--to=axboe@kernel.dk \
--cc=andrew.lyon@gmail.com \
--cc=htejun@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.