From: Dave Jones <davej@redhat.com>
To: Vince Weaver <vince@deater.net>
Cc: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Peter Anvin <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: Yet more softlockups.
Date: Wed, 10 Jul 2013 17:54:14 -0400 [thread overview]
Message-ID: <20130710215414.GA25959@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1307101137160.2022@pianoman.cluster.toy>
On Wed, Jul 10, 2013 at 11:39:50AM -0400, Vince Weaver wrote:
> On Wed, 10 Jul 2013, Dave Jones wrote:
>
> > Something is really fucked up in the kernel side of perf.
> > I get this right after booting..
> >
> > [ 114.516619] perf samples too long (4262 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
> >
> > That's before I even get a chance to log in, so I'm pretty sure perf isn't even being run.
> >
> > And this is just booting up my desktop, not fuzzing.
>
> This is probably related to the problem described in the thread
> perf: fix interrupt handler timing harness
> http://comments.gmane.org/gmane.linux.kernel/1520775
> which in theory has a fix. Not sure why it'd trigger during boot.
Bah. That's not it either.
[ 1903.293233] perf samples too long (2514 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 1903.295248] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 19498.002 msecs
Dave
prev parent reply other threads:[~2013-07-10 21:54 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-04 1:55 scheduling while atomic & hang Dave Jones
2013-07-04 2:49 ` Linus Torvalds
2013-07-04 4:43 ` H. Peter Anvin
2013-07-04 7:49 ` Dave Jones
2013-07-04 17:22 ` Linus Torvalds
2013-07-10 20:54 ` J. Bruce Fields
2013-07-04 18:08 ` H. Peter Anvin
2013-07-05 6:51 ` Ingo Molnar
2013-07-05 7:19 ` Frederic Weisbecker
2013-07-05 10:05 ` Ingo Molnar
2013-07-05 19:27 ` Linus Torvalds
2013-07-06 8:02 ` Frederic Weisbecker
2013-07-06 8:07 ` Ingo Molnar
2013-07-05 14:38 ` Yet more softlockups Dave Jones
2013-07-05 15:15 ` Thomas Gleixner
2013-07-05 16:00 ` Dave Jones
2013-07-05 16:02 ` Thomas Gleixner
2013-07-05 16:41 ` H. Peter Anvin
2013-07-05 18:20 ` Seiji Aguchi
2013-07-05 22:21 ` Thomas Gleixner
2013-07-06 7:24 ` Ingo Molnar
2013-07-07 0:24 ` Dave Jones
2013-07-10 15:13 ` Dave Jones
2013-07-10 15:20 ` Markus Trippelsdorf
2013-07-10 15:40 ` Dave Jones
2013-07-12 10:31 ` Ingo Molnar
2013-07-12 15:38 ` Dave Hansen
2013-07-12 15:45 ` Dave Jones
2013-07-12 15:55 ` Dave Hansen
2013-07-12 17:00 ` Dave Jones
2013-07-12 17:12 ` David Ahern
2013-07-12 17:18 ` Dave Jones
2013-07-12 17:40 ` David Ahern
2013-07-12 17:50 ` Dave Jones
2013-07-12 18:07 ` David Ahern
2013-07-12 18:22 ` Dave Hansen
2013-07-12 20:13 ` Dave Hansen
2013-07-13 1:40 ` Vince Weaver
2013-07-10 15:39 ` Vince Weaver
2013-07-10 15:45 ` Dave Jones
2013-07-10 21:54 ` Dave Jones [this message]
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