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From: Thomas Gleixner <tglx@linutronix.de>
To: Nicholas Mc Guire <der.herr@hofr.at>
Cc: Clark Williams <williams@redhat.com>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	RT <linux-rt-users@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RT] oops in 4.1.3-rt3
Date: Tue, 4 Aug 2015 14:05:10 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1508041403550.3983@nanos> (raw)
In-Reply-To: <20150804080829.GB9956@opentech.at>

On Tue, 4 Aug 2015, Nicholas Mc Guire wrote:
> <snip>
>     3 root      -2   0       0      0      0 R  60.3  0.0   5756:16 ksoftirqd/0 
>    23 root      -2   0       0      0      0 R  50.8  0.0   4948:08 ksoftirqd/2
>    17 root      -2   0       0      0      0 S  50.6  0.0   4897:13 ksoftirqd/1
>    29 root      -2   0       0      0      0 S  50.4  0.0   4953:24 ksoftirqd/3

So ksoftirqd eats 50+% CPU on each core. On an idle system!?! Any
chance that you can get a function trace snapshot out of it?

Thanks,

	tglx

  reply	other threads:[~2015-08-04 12:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-03 19:27 Clark Williams
2015-08-04  8:08 ` Nicholas Mc Guire
2015-08-04 12:05   ` Thomas Gleixner [this message]
2015-08-16 11:58     ` Sebastian Andrzej Siewior
2015-08-19 20:58       ` Thomas Gleixner
2015-08-16 11:33 ` Sebastian Andrzej Siewior
2016-02-04 20:59 ` Clark Williams
2016-03-09 13:21   ` Sebastian Andrzej Siewior

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