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From: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH 1/9] ia64: VIRT_CPU_ACCOUNTING (accurate cpu time accounting)
Date: Wed, 07 Nov 2007 09:46:01 +0000	[thread overview]
Message-ID: <47318959.2080306@jp.fujitsu.com> (raw)
In-Reply-To: <4714BDC7.1070702@jp.fujitsu.com>

> I did run the kernel some more today and noticed some odd "hangs".
> Some processes seemed to get stuck for many seconds and then
> continued again.  Didn't have time to try and track what was
> happening.  Have you seem snything like this?
> 

I've encountered the similar phenomenon several times. I have
not investigated it very much, but I guess it is related to the
problem reported at

http://marc.info/?l=linux-kernel&m\x119303432628668&w=2

The 'wa' field of 'top' command showed that one of cpus is under
100% iowait when I encountered the problem.

Thanks,
Kenji Kaneshige


  parent reply	other threads:[~2007-11-07  9:46 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-16 13:33 [PATCH 1/9] ia64: VIRT_CPU_ACCOUNTING (accurate cpu time accounting) Hidetoshi Seto
2007-11-01 20:29 ` Tony Luck
2007-11-02  3:15 ` Hidetoshi Seto
2007-11-07  6:59 ` Luck, Tony
2007-11-07  9:46 ` Kenji Kaneshige [this message]
2007-11-19  4:34 ` Simon Horman
2007-11-19  5:17 ` Hidetoshi Seto

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