From: Peter Zijlstra <peterz@infradead.org>
To: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 100% iowait on one of cpus in current -git
Date: Mon, 22 Oct 2007 11:41:57 +0200 [thread overview]
Message-ID: <1193046118.27435.166.camel@twins> (raw)
In-Reply-To: <200710220822.52370.maximlevitsky@gmail.com>
On Mon, 2007-10-22 at 08:22 +0200, Maxim Levitsky wrote:
> 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?
next prev parent reply other threads:[~2007-10-22 9:42 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-22 6:22 100% iowait on one of cpus in current -git Maxim Levitsky
2007-10-22 9:11 ` Paolo Ornati
2007-10-22 9:43 ` Maxim Levitsky
2007-10-22 9:41 ` Peter Zijlstra [this message]
2007-10-22 9:59 ` Maxim Levitsky
2007-10-22 10:22 ` Peter Zijlstra
2007-10-22 10:40 ` Maxim Levitsky
2007-10-22 10:55 ` Fengguang Wu
2007-10-22 10:55 ` Fengguang Wu
2007-10-22 10:58 ` Maxim Levitsky
2007-10-22 11:19 ` Fengguang Wu
2007-10-22 11:19 ` Fengguang Wu
2007-10-22 12:21 ` Maxim Levitsky
2007-10-22 12:37 ` Fengguang Wu
2007-10-22 12:37 ` Fengguang Wu
2007-10-22 13:05 ` Maxim Levitsky
2007-10-22 13:10 ` Fengguang Wu
2007-10-22 13:10 ` Fengguang Wu
2007-10-22 13:28 ` Maxim Levitsky
2007-10-22 13:41 ` Fengguang Wu
2007-10-22 13:41 ` Fengguang Wu
2007-10-31 15:22 ` Torsten Kaiser
2007-11-01 7:57 ` Fengguang Wu
2007-11-01 7:57 ` Fengguang Wu
2007-11-01 18:20 ` Torsten Kaiser
2007-11-01 19:00 ` Torsten Kaiser
2007-11-02 2:21 ` writeout stalls " Fengguang Wu
2007-11-02 2:21 ` Fengguang Wu
2007-11-02 7:50 ` Torsten Kaiser
2007-11-02 10:15 ` Peter Zijlstra
2007-11-02 10:33 ` Fengguang Wu
2007-11-02 10:33 ` Fengguang Wu
2007-11-05 23:57 ` Andrew Morton
2007-11-06 10:20 ` Peter Zijlstra
2007-11-06 16:25 ` Patch tags [was writeout stalls in current -git] Jonathan Corbet
2007-11-06 17:03 ` Balbir Singh
2007-11-06 23:26 ` Adrian Bunk
2007-11-09 16:10 ` Jonathan Corbet
2007-11-09 16:19 ` Adrian Bunk
2007-11-02 19:22 ` writeout stalls in current -git Torsten Kaiser
2007-11-02 20:43 ` David Chinner
2007-11-02 21:02 ` Torsten Kaiser
2007-11-04 11:19 ` Torsten Kaiser
2007-11-05 1:45 ` David Chinner
2007-11-05 7:01 ` Torsten Kaiser
2007-11-05 18:27 ` Torsten Kaiser
2007-11-06 4:25 ` David Chinner
2007-11-06 7:10 ` Torsten Kaiser
2007-11-06 19:01 ` Peter Zijlstra
2007-11-06 20:26 ` Torsten Kaiser
2007-11-06 9:17 ` Fengguang Wu
2007-11-06 9:17 ` Fengguang Wu
2007-11-06 21:53 ` Torsten Kaiser
2007-11-06 23:31 ` David Chinner
2007-11-07 2:13 ` David Chinner
2007-11-07 7:15 ` Torsten Kaiser
2007-11-08 0:38 ` David Chinner
2007-11-20 13:16 ` Damien Wyart
2007-11-20 21:09 ` David Chinner
2007-11-02 1:54 ` Fengguang Wu
2007-11-02 1:54 ` Fengguang Wu
2007-11-02 7:42 ` Torsten Kaiser
2007-11-02 7:52 ` Fengguang Wu
2007-11-02 7:52 ` Fengguang Wu
2007-11-02 17:47 ` Torsten Kaiser
2007-10-23 7:55 ` [PATCH] reiserfs: don't drop PG_dirty when releasing sub-page-sized dirty file Fengguang Wu
2007-10-23 7:55 ` Fengguang Wu
2007-10-23 10:07 ` Peter Zijlstra
2007-10-23 11:56 ` Fengguang Wu
2007-10-23 11:56 ` Fengguang Wu
2007-10-23 14:10 ` Chris Mason
2007-10-23 14:40 ` Fengguang Wu
2007-10-23 14:40 ` Fengguang Wu
2007-10-23 10:17 ` Maxim Levitsky
2007-10-23 14:41 ` Fengguang Wu
2007-10-23 14:41 ` Fengguang Wu
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