Re: 100% iowait on one of cpus in current -git

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To: Maxim Levitsky <maximlevitsky@...>

Cc: <linux-kernel@...>

Subject: Re: 100% iowait on one of cpus in current -git

Date: Monday, October 22, 2007 - 5:41 am

On Mon, 2007-10-22 at 08:22 +0200, Maxim Levitsky wrote:
quoted text> Hi,
> 
> I found a bug in current -git:
> 
> On my system on of cpus stays 100% in iowait mode (I have core 2 duo)
> Otherwise the system works OK, no disk activity and/or slowdown.
> Suspecting that this is a swap-related problem I tried to turn swap of, but it doesn't affect anything.
> It is probably some accounting bug.
> 
> If I start with init=/bin/bash, then this disappears.
> I tried then to start usual /etc/init.d scripts then, and first one to show this bug was gpm.
> but then I rebooted the system to X without gpm, and I still see 100% iowait.
> 
> No additional messages in dmesg.

does sysrq-t show any D state tasks?

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Messages in current thread:

100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 2:22 am)

Re: 100% iowait on one of cpus in current -git, Peter Zijlstra, (Mon Oct 22, 5:41 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 5:59 am)

Re: 100% iowait on one of cpus in current -git, Peter Zijlstra, (Mon Oct 22, 6:22 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 6:40 am)

Re: 100% iowait on one of cpus in current -git, Fengguang Wu, (Mon Oct 22, 6:55 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 6:58 am)

Re: 100% iowait on one of cpus in current -git, Fengguang Wu, (Mon Oct 22, 7:19 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 8:21 am)

[PATCH] reiserfs: don't drop PG_dirty when releasing sub-pag..., Fengguang Wu, (Tue Oct 23, 3:55 am)

Re: [PATCH] reiserfs: don't drop PG_dirty when releasing sub..., Maxim Levitsky, (Tue Oct 23, 6:17 am)

Re: [PATCH] reiserfs: don't drop PG_dirty when releasing sub..., Fengguang Wu, (Tue Oct 23, 10:41 am)

Re: [PATCH] reiserfs: don't drop PG_dirty when releasing sub..., Peter Zijlstra, (Tue Oct 23, 6:07 am)

Re: [PATCH] reiserfs: don't drop PG_dirty when releasing sub..., Fengguang Wu, (Tue Oct 23, 7:56 am)

Re: [PATCH] reiserfs: don't drop PG_dirty when releasing sub..., Chris Mason, (Tue Oct 23, 10:10 am)

Re: [PATCH] reiserfs: don't drop PG_dirty when releasing sub..., Fengguang Wu, (Tue Oct 23, 10:40 am)

Re: 100% iowait on one of cpus in current -git, Fengguang Wu, (Mon Oct 22, 8:37 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 9:05 am)

Re: 100% iowait on one of cpus in current -git, Fengguang Wu, (Mon Oct 22, 9:10 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 9:28 am)

Re: 100% iowait on one of cpus in current -git, Paolo Ornati, (Mon Oct 22, 5:11 am)

Re: 100% iowait on one of cpus in current -git, Maxim Levitsky, (Mon Oct 22, 5:43 am)


linux-kernel:
Tarkan Erimer	Re: Dual-Licensing Linux Kernel with GPL V2 and GPL V3
Greg KH	[GIT PATCH] driver core patches against 2.6.24
clameter	[31/36] Large Blocksize: Core piece
David Woodhouse	Re: [GIT *] Allow request_firmware() to be satisfied from in-kernel, use it in mor...
git:

linux-netdev:

Gerrit Renker	[PATCH 27/37] dccp: Integration of dynamic feature activation - part 2 (server side)
KOSAKI Motohiro	[bug?] tg3: Failed to load firmware "tigon/tg3_tso.bin"
Jarek Poplawski	[PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().
openbsd-misc:

Re: 100% iowait on one of cpus in current -git

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