From: Willy Tarreau <w@1wt.eu>
To: Mike Galbraith <efault@gmx.de>
Cc: Tong Li <tong.n.li@intel.com>, Ingo Molnar <mingo@elte.hu>,
dimm <dmitry.adamushko@gmail.com>,
linux-kernel@vger.kernel.org,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [git] CFS-devel, group scheduler, fixes
Date: Thu, 20 Sep 2007 21:48:13 +0200 [thread overview]
Message-ID: <20070920194813.GH10199@1wt.eu> (raw)
In-Reply-To: <1190272507.27867.20.camel@Homer.simpson.net>
On Thu, Sep 20, 2007 at 09:15:07AM +0200, Mike Galbraith wrote:
> But, I did just manage to trigger some horrid behavior, and log it. I
> modified the kernel to print task's actual tree key instead of their
> current vruntime, and was watching that while make -j2 was running (and
> not seeing anything very interesting), when on a lark, I restarted
> SuSE's system updater thingy. That beast chews 100% CPU for so long at
> startup that I long ago got annoyed, and changed it to run at nice 19.
> Anyway, when it started, interactivity went to hell in the proverbial
> hand-basket, and the sched_debug log shows some interesting results..
> like spread0 hitting -13659412644, and cc1 being keyed at -3867063305.
>
> cpu#0, 2992.608 MHz
> .nr_running : 4
> .load : 4096
> .nr_switches : 1105882
> .nr_load_updates : 735146
> .nr_uninterruptible : 4294966399
(...)
> cpu#1, 2992.608 MHz
> .nr_running : 5
> .load : 6208
> .nr_switches : 1012995
> .nr_load_updates : 747540
> .nr_uninterruptible : 897
I don't know if this is relevant, but 4294966399 in nr_uninterruptible
for cpu#0 equals -897, exactly the negation of cpu1.nr_uninterruptible.
I don't know if this rings a bell for someone or if it's a completely
useless comment, but just in case...
HTH,
Willy
next prev parent reply other threads:[~2007-09-20 19:49 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 19:36 dimm
2007-09-18 20:16 ` Ingo Molnar
2007-09-19 6:03 ` Tong Li
2007-09-19 6:28 ` Mike Galbraith
2007-09-19 7:51 ` Mike Galbraith
2007-09-19 8:42 ` Mike Galbraith
2007-09-19 17:06 ` Tong Li
2007-09-20 4:55 ` Mike Galbraith
2007-09-20 7:15 ` Mike Galbraith
2007-09-20 7:51 ` Ingo Molnar
2007-09-20 8:11 ` Mike Galbraith
2007-09-22 3:27 ` Tong Li
2007-09-22 10:01 ` Mike Galbraith
2007-09-23 7:14 ` Mike Galbraith
2007-09-23 11:37 ` Mike Galbraith
[not found] ` <20070923115847.GA13061@elte.hu>
2007-09-23 15:53 ` [git] CFS-devel, updates Mike Galbraith
2007-09-24 6:21 ` [git] CFS-devel, group scheduler, fixes Tong Li
2007-09-24 10:10 ` Mike Galbraith
2007-09-24 10:24 ` Peter Zijlstra
2007-09-24 10:42 ` Mike Galbraith
2007-09-24 11:08 ` Peter Zijlstra
2007-09-24 11:43 ` Mike Galbraith
2007-09-24 11:22 ` Mike Galbraith
2007-09-24 11:51 ` Peter Zijlstra
2007-09-24 16:43 ` Tong Li
2007-09-20 19:48 ` Willy Tarreau [this message]
2007-09-21 2:40 ` Mike Galbraith
2007-09-21 3:11 ` Willy Tarreau
2007-09-19 19:35 ` Siddha, Suresh B
2007-09-19 20:58 ` Tong Li
2007-09-18 20:22 ` Ingo Molnar
2007-09-19 3:55 ` Srivatsa Vaddagiri
-- strict thread matches above, loose matches on Subject: below --
2007-09-18 19:56 Dmitry Adamushko
2007-09-18 20:18 ` Ingo Molnar
2007-09-18 19:46 Dmitry Adamushko
2007-09-18 20:17 ` Ingo Molnar
2007-09-15 13:06 Ingo Molnar
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