Re: regression: 100% io-wait with 2.6.24-rcX

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----- Original Message ----
> From: Alasdair G Kergon <agk@xxxxxxxxxx>
> To: Martin Knoblauch <spamtrap@xxxxxxxxxxxx>
> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>; Mel Gorman <mel@xxxxxxxxx>; Fengguang Wu <wfg@xxxxxxxxxxxxxxxx>; Mike Snitzer <snitzer@xxxxxxxxx>; Peter Zijlstra <peterz@xxxxxxxxxxxxx>; jplatte@xxxxxxxxx; Ingo Molnar <mingo@xxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; "linux-ext4@xxxxxxxxxxxxxxx" <linux-ext4@xxxxxxxxxxxxxxx>; James.Bottomley@xxxxxxxxxxxx; Jens Axboe <jens.axboe@xxxxxxxxxx>; Milan Broz <mbroz@xxxxxxxxxx>; Neil Brown <neilb@xxxxxxx>
> 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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