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Subject: Re: NOHZ: local_softirq_pending 10
From: Peter Zijlstra <peterz@infradead.org>
To: Udo van den Heuvel <udovdh@xs4all.nl>
Cc: linux-kernel@vger.kernel.org, linux-rt@vger.kernel.org,
       Thomas Gleixner <tglx@linutronix.de>
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Date: Thu, 11 Jun 2009 17:12:00 +0200
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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.