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From: Martin Kourim <martink@hkfree.org>
Subject: Re: sluggish system with 2.6.17 and dm-crypt - PARTLY SOLVED
Date: Sun, 17 Sep 2006 14:22:44 +0200
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Hi,

yesterday, I've send mail below to this list. Today I've noticed that on 
2.6.17, kjournald is running with nice level -5. On 2.6.16, kjournald is 
running with nice level 0. I did "renice 0 `pgrep kjournald`" and it 
have "solved" my problem.

I wonder why have been changed the nice level of kjournald in 2.6.17 kernel?

Thanks,
Martin Kourim

(please CC me)

Dne sobota 16 záøí 2006 10:53 jste napsal(a):
> Hi,
>
> I've got this problem with linux 2.6.17 and dm-crypt.
>
> I've got 320GB PATA hdd with one partition with dm-crypt and ext3. I've set
> it up with cryptsetup.
> When I copy some data to this encrypted partition, system is very sluggish.
> It freezes for about half a second every about 10-15 seconds.
> This problem appears only when copying data to that encrypted partition.
> There is no problem copying data to other unencrypted partitions or from
> encrypted partition.
>
> I've thought that maybe it is problem with just Debian kernels (tried
> linux-image-2.6.17-2-vserver-k7_2.6.17-8 and
> linux-image-2.6.17-2-k7_2.6.17-8), but I've got the same problem with
> vanilla 2.6.17.13.
> But... there is no problem with linux v2.6.16 (compiled from Debian
> sources).
>
> I've tried different io schedulers too (cfq, anticipatory and deadline)
> with no difference.
>
> This system is AthlonXP 2600+, 1gb ram, 2x SATA hdd and 2x PATA hdd, mb
> asus A7N8X-E deluxe.
>
> What other information should I provide?
>
> Thanks,
> Martin Kourim
>
> (please CC me)