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SubjectRe: regression: 100% io-wait with 2.6.24-rcX
----- Original Message ----
> From: Alasdair G Kergon <agk@redhat.com>
> To: Martin Knoblauch <spamtrap@knobisoft.de>
> Cc: Linus Torvalds <torvalds@linux-foundation.org>; Mel Gorman <mel@csn.ul.ie>; Fengguang Wu <wfg@mail.ustc.edu.cn>; Mike Snitzer <snitzer@gmail.com>; Peter Zijlstra <peterz@infradead.org>; jplatte@naasa.net; Ingo Molnar <mingo@elte.hu>; linux-kernel@vger.kernel.org; "linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>; James.Bottomley@steeleye.com; Jens Axboe <jens.axboe@oracle.com>; Milan Broz <mbroz@redhat.com>; Neil Brown <neilb@suse.de>
> Sent: Tuesday, January 22, 2008 3:39:33 PM
> Subject: Re: regression: 100% io-wait with 2.6.24-rcX
>
>
> See if these patches make any difference:
>
http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/
>
> dm-md-merge_bvec_fn-with-separate-bdev-and-sector.patch
> dm-introduce-merge_bvec_fn.patch
> dm-linear-add-merge.patch
> dm-table-remove-merge_bvec-sector-restriction.patch
>


nope. Exactely the same poor results. To rule out LVM/DM I really have to see what happens if I setup a system with filesystems directly on partitions. Might take some time though.

Cheers
Martin





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