From: "Cristian Rodríguez" <crrodriguez@opensuse.org>
To: Neal Cardwell <ncardwell@google.com>
Cc: Netdev <netdev@vger.kernel.org>,
Yuchung Cheng <ycheng@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: BUG: soft lockup - CPU#6 stuck for 22s! [httpd2-event:15597]
Date: Wed, 29 Aug 2012 23:05:10 -0400 [thread overview]
Message-ID: <503ED866.3020609@opensuse.org> (raw)
In-Reply-To: <CADVnQy=bdHm2jcuReZaxr-qRMRWLDLnVP-jkzBTE-HPZ9FROmw@mail.gmail.com>
El mié 29 ago 2012 21:37:46 CLT, Neal Cardwell escribió:
Hi neal, thanks for taking a look at this..
> 1) Are you still seeing this problem in your workload? If so, would
> you have time to try another small patch to add instrumentation to
> track down the cause?
After Eric's patch I no longer see this backtrace or hang, however the
machine does
hang apparently for another reason that I have been unable to capture
no clue at all in the logs and the KVM-over-ip video does not respond
after hang, needing a reset,
that's strange though, as it is usually able to display kernel messages
after a crash.
> 2) Do you happen to run with the tcp_mtu_probing sysctl enabled?
No, sysctl returns : net.ipv4.tcp_mtu_probing = 0
prev parent reply other threads:[~2012-08-30 3:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-25 0:50 BUG: soft lockup - CPU#6 stuck for 22s! [httpd2-event:15597] Cristian Rodríguez
2012-08-25 8:59 ` Eric Dumazet
2012-08-25 9:14 ` Eric Dumazet
2012-08-25 11:47 ` Eric Dumazet
2012-08-25 17:45 ` Cristian Rodríguez
2012-08-25 17:52 ` Eric Dumazet
2012-08-27 4:02 ` Neal Cardwell
2012-08-27 4:06 ` Eric Dumazet
2012-08-30 1:37 ` Neal Cardwell
2012-08-30 3:05 ` Cristian Rodríguez [this message]
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