From: Tejun Heo <htejun@gmail.com>
To: Denys Dmytriyenko <denis@denix.org>
Cc: Gabor FUNK <FUNK.Gabor@hunetkft.hu>,
linux-ide@vger.kernel.org, Jim Paris <jim@jtan.com>,
Mark Lord <liml@rtr.ca>
Subject: Re: sata_sil24 stability and performance
Date: Thu, 06 Mar 2008 16:08:48 +0900 [thread overview]
Message-ID: <47CF9880.4080900@gmail.com> (raw)
In-Reply-To: <20080306065513.GE7150@denix.org>
Denys Dmytriyenko wrote:
>>> Also, few months ago instead of sata_sil24 I had my drives connected to
>>> sata_mv (Supermicro 8-port) and performance was normal...
>> Everything seems okay. I wonder where the difference is. Does "dd
>> if=/dev/zero of=file oflags=direct bs=1M" make any difference? And can
>> you vacate a raw partition and try it on there?
>
> oflag=direct has no effect - same speed. Tried it on a raw /dev/sda device
> and still no difference. It maybe slighly better, giving me 18 MB/s.
>
> Can it be something with the way SiI 3124 controller is configured in the
> system?
Hmmm... That's strange you did specify the "bs" parameter, right? It
should essentially give the same performance as "hdparm -t". I wonder
where the difference comes from.
--
tejun
next prev parent reply other threads:[~2008-03-06 7:08 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-19 2:09 sata_sil24 stability and performance Denys Dmytriyenko
2008-02-19 4:36 ` Jim Paris
2008-02-19 6:39 ` Denys Dmytriyenko
2008-02-19 15:32 ` Mark Lord
2008-03-02 6:14 ` Denys Dmytriyenko
2008-03-02 9:39 ` Gabor FUNK
2008-03-04 0:02 ` Tejun Heo
2008-03-04 0:22 ` Denys Dmytriyenko
2008-03-04 3:28 ` Tejun Heo
2008-03-04 6:29 ` Denys Dmytriyenko
2008-03-05 8:11 ` Tejun Heo
2008-03-06 4:14 ` Denys Dmytriyenko
2008-03-06 4:25 ` Tejun Heo
2008-03-06 6:55 ` Denys Dmytriyenko
2008-03-06 7:08 ` Tejun Heo [this message]
2008-03-15 21:43 ` Denys Dmytriyenko
2008-03-17 3:09 ` Mark Lord
2008-03-18 0:15 ` Denys Dmytriyenko
2008-03-18 4:09 ` Tejun Heo
2008-03-18 4:53 ` Denys Dmytriyenko
2008-03-18 6:40 ` Tejun Heo
2008-03-20 22:37 ` Denys Dmytriyenko
2008-03-21 0:18 ` Tejun Heo
2008-04-14 1:19 ` Denys Dmytriyenko
2008-04-14 2:49 ` Tejun Heo
2008-04-14 10:55 ` Gabor FUNK
2008-03-18 9:14 ` Gabor FUNK
2008-03-18 13:06 ` Gabor FUNK
2008-03-18 20:05 ` Mark Lord
2008-03-18 20:06 ` Mark Lord
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