From: Dave Jones <davej@redhat.com>
To: Vince Weaver <vince@deater.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Oleg Nesterov <oleg@redhat.com>, Ben Myers <bpm@sgi.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
xfs@oss.sgi.com, Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: splice vs execve lockdep trace.
Date: Tue, 16 Jul 2013 11:02:17 -0400 [thread overview]
Message-ID: <20130716150217.GA825@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1307160956370.15153@pianoman.cluster.toy>
On Tue, Jul 16, 2013 at 09:59:35AM -0400, Vince Weaver wrote:
> On Mon, 15 Jul 2013, Linus Torvalds wrote:
>
> > On Mon, Jul 15, 2013 at 7:38 PM, Dave Jones <davej@redhat.com> wrote:
> >
> > > Interestingly, the 'soft lockups' I was
> > > seeing all the time on that box seem to have gone into hiding.
> >
> > Honestly, I'm somewhat inclined to blame the whole perf situation, and
> > saying that we hopefully got that fixed. In between the silly do_div()
> > buglets and all the indications that the time was spent in nmi
> > handlers, I'd be willing to just ignore them as false positives
> > brought on by the whole switch to the perf irq..
>
> Did the perf soft lockups go away with 3.11-rc1?
>
> 734df5ab549ca44f40de0f07af1c8803856dfb18 finally got committed,
> and it fixes a major long-standing perf-related NMI soft lockup bug I
> found when fuzzing.
That could be it. I never got around to trying that commit standalone
when you first pointed it out.
thanks,
Dave
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Jones <davej@redhat.com>
To: Vince Weaver <vince@deater.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Oleg Nesterov <oleg@redhat.com>, Ben Myers <bpm@sgi.com>,
xfs@oss.sgi.com
Subject: Re: splice vs execve lockdep trace.
Date: Tue, 16 Jul 2013 11:02:17 -0400 [thread overview]
Message-ID: <20130716150217.GA825@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1307160956370.15153@pianoman.cluster.toy>
On Tue, Jul 16, 2013 at 09:59:35AM -0400, Vince Weaver wrote:
> On Mon, 15 Jul 2013, Linus Torvalds wrote:
>
> > On Mon, Jul 15, 2013 at 7:38 PM, Dave Jones <davej@redhat.com> wrote:
> >
> > > Interestingly, the 'soft lockups' I was
> > > seeing all the time on that box seem to have gone into hiding.
> >
> > Honestly, I'm somewhat inclined to blame the whole perf situation, and
> > saying that we hopefully got that fixed. In between the silly do_div()
> > buglets and all the indications that the time was spent in nmi
> > handlers, I'd be willing to just ignore them as false positives
> > brought on by the whole switch to the perf irq..
>
> Did the perf soft lockups go away with 3.11-rc1?
>
> 734df5ab549ca44f40de0f07af1c8803856dfb18 finally got committed,
> and it fixes a major long-standing perf-related NMI soft lockup bug I
> found when fuzzing.
That could be it. I never got around to trying that commit standalone
when you first pointed it out.
thanks,
Dave
next prev parent reply other threads:[~2013-07-16 15:02 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-16 1:53 splice vs execve lockdep trace Dave Jones
2013-07-16 2:32 ` Linus Torvalds
2013-07-16 2:38 ` Dave Jones
2013-07-16 3:25 ` Linus Torvalds
2013-07-16 3:25 ` Linus Torvalds
2013-07-16 3:28 ` Dave Jones
2013-07-16 3:28 ` Dave Jones
2013-07-16 5:31 ` Al Viro
2013-07-16 5:31 ` Al Viro
2013-07-16 6:03 ` Dave Chinner
2013-07-16 6:03 ` Dave Chinner
2013-07-16 6:16 ` Al Viro
2013-07-16 6:16 ` Al Viro
2013-07-16 6:41 ` Dave Chinner
2013-07-16 6:41 ` Dave Chinner
2013-07-16 6:50 ` Dave Chinner
2013-07-16 6:50 ` Dave Chinner
2013-07-16 19:33 ` Ben Myers
2013-07-16 19:33 ` Ben Myers
2013-07-16 20:18 ` Linus Torvalds
2013-07-16 20:18 ` Linus Torvalds
2013-07-16 20:43 ` Dave Chinner
2013-07-16 20:43 ` Dave Chinner
2013-07-16 21:02 ` Linus Torvalds
2013-07-16 21:02 ` Linus Torvalds
2013-07-17 4:06 ` Dave Chinner
2013-07-17 4:06 ` Dave Chinner
2013-07-17 4:54 ` Linus Torvalds
2013-07-17 4:54 ` Linus Torvalds
2013-07-17 5:51 ` Dave Chinner
2013-07-17 5:51 ` Dave Chinner
2013-07-17 16:03 ` Linus Torvalds
2013-07-17 16:03 ` Linus Torvalds
2013-07-17 23:40 ` Ben Myers
2013-07-17 23:40 ` Ben Myers
2013-07-18 0:17 ` Linus Torvalds
2013-07-18 0:17 ` Linus Torvalds
2013-07-18 3:42 ` Dave Chinner
2013-07-18 3:42 ` Dave Chinner
2013-07-18 21:16 ` Ben Myers
2013-07-18 21:16 ` Ben Myers
2013-07-18 22:21 ` Ben Myers
2013-07-18 22:21 ` Ben Myers
2013-07-18 22:49 ` Dave Chinner
2013-07-18 22:49 ` Dave Chinner
2013-07-18 3:17 ` Dave Chinner
2013-07-18 3:17 ` Dave Chinner
2013-07-16 13:59 ` Vince Weaver
2013-07-16 13:59 ` Vince Weaver
2013-07-16 15:02 ` Dave Jones [this message]
2013-07-16 15:02 ` Dave Jones
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