linux-kernel - Re: NOHZ: local_softirq

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Message-Id: <1244733120.6691.433.camel@laptop>
Date:	Thu, 11 Jun 2009 17:12:00 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Udo van den Heuvel <udovdh@...all.nl>
Cc:	linux-kernel@...r.kernel.org, linux-rt@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: NOHZ: local_softirq_pending 10

On Thu, 2009-06-11 at 17:05 +0200, Udo van den Heuvel wrote:
> Hello,
> 
> I found a few of these in my 2.6.29.4-rt16 logs:
> 
> NOHZ: local_softirq_pending 10
> 
> Are they rt-related?
> (I saw them in older kernels without -rt as well)
> How serious? How to fix?

Not really serious, but curious, that appears to be BLOCK_SOFTIRQ, and
the only one I suspected to trigger this would be HRTIMER_SOFTIRQ.

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