From: David Miller <davem@davemloft.net>
To: mingo@elte.hu
Cc: linux-kernel@vger.kernel.org, jeremy@goop.org, gregkh@suse.de,
akpm@linux-foundation.org
Subject: Re: regression from softlockup fix
Date: Mon, 19 Nov 2007 03:10:05 -0800 (PST) [thread overview]
Message-ID: <20071119.031005.127194576.davem@davemloft.net> (raw)
In-Reply-To: <20071119094338.GA19271@elte.hu>
From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 19 Nov 2007 10:43:38 +0100
> * David Miller <davem@davemloft.net> wrote:
>
> > I suspect that what is happening is that the NOHZ period is longer
> > than the softlockup timeout (10 seconds) and we get an interrupt
> > before the watchdog thread gets onto the cpu.
>
> indeed! Does the patch below do the trick?
I'm sure it works but it partly defeats the purpose of NOHZ.
I really like it that my cpus sleep completely for hours at a time
when not in use. :)
Anyways, I'll give your patch a test.
next prev parent reply other threads:[~2007-11-19 11:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-19 9:21 David Miller
2007-11-19 9:43 ` Ingo Molnar
2007-11-19 11:10 ` David Miller [this message]
2007-11-19 17:15 ` Jeremy Fitzhardinge
2007-11-19 19:03 ` Ingo Molnar
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