From: Paolo Ornati <ornati@gmail.com>
To: Mikulas Patocka <mpatocka@redhat.com>
Cc: linux-kernel@vger.kernel.org, dm-devel@redhat.com,
linux-scsi@vger.kernel.org
Subject: Re: Testers needed - Maxtor performance degradation
Date: Thu, 6 May 2010 20:32:50 +0200 [thread overview]
Message-ID: <20100506203250.76f559cd@gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.64.1005051433080.30185@hs20-bc2-1.build.redhat.com>
On Thu, 6 May 2010 12:15:58 -0400 (EDT)
Mikulas Patocka <mpatocka@redhat.com> wrote:
> I'd like to ask other people with Maxtor disks to run this script (with
> "sda", "sdb", etc. as an argument ... without "/dev/" prefix). The script
> measures read rate as a function of request size. Report the results, so
> that it can be determined which disks are buggy and which not and the
> default transfer size could be reduced to 256kB for the buggy ones.
ATA MAXTOR STM316021 3.AA
64 kB: 78.9 MB/s
128 kB: 79.1 MB/s
192 kB: 79.1 MB/s
256 kB: 78.6 MB/s
320 kB: 79.1 MB/s
384 kB: 78.9 MB/s
448 kB: 79.0 MB/s
512 kB: 79.1 MB/s
576 kB: 79.0 MB/s
640 kB: 79.1 MB/s
704 kB: 79.0 MB/s
768 kB: 79.1 MB/s
832 kB: 79.0 MB/s
896 kB: 79.0 MB/s
960 kB: 79.1 MB/s
1024 kB: 78.8 MB/s
--
Paolo Ornati
Linux 2.6.34-rc6-00063-gbe1066b on x86_64
prev parent reply other threads:[~2010-05-06 18:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-06 16:15 Testers needed - Maxtor performance degradation Mikulas Patocka
2010-05-06 16:23 ` Tvrtko Ursulin
2010-05-06 18:32 ` Paolo Ornati [this message]
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