From: Carsten Emde <C.Emde@osadl.org>
To: Dong Liu <dliu.cn@gmail.com>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: cpu stall and hyperthread
Date: Fri, 06 Jul 2012 01:02:25 +0200 [thread overview]
Message-ID: <4FF61D01.9040502@osadl.org> (raw)
In-Reply-To: <4FF5DFDC.9010501@gmail.com>
Hi Dong,
> I tried to disable CONFIG_RT_GROUP_SCHED, but I still got cpu stalls!
Just had another look at your dmesg files. Didn't you get
BUG: soft lockup - CPU#0 stuck for 279s! [swapper/0:0]
before? Now - with CONFIG_RT_GROUP_SCHED disabled - you get:
rcu_preempt detected stalls on CPUs/tasks: { 3} [..]
Is it reproducible? Maybe, there are two different problems. One leads
to soft lockups and is related to CONFIG_RT_GROUP_SCHED, and another one
that leads to rcu_preempt stalls.
-Carsten.
next prev parent reply other threads:[~2012-07-05 23:12 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4FEBCDDE.60503@gmail.com>
2012-07-03 20:10 ` cpu stall and hyperthread Dong Liu
2012-07-04 1:13 ` Paul E. McKenney
2012-07-04 17:27 ` Dong Liu
2012-07-04 22:52 ` Carsten Emde
2012-07-05 18:41 ` Dong Liu
2012-07-05 22:48 ` Carsten Emde
2012-07-06 6:07 ` Dong Liu
2012-07-05 23:02 ` Carsten Emde [this message]
2012-07-06 6:04 ` Dong Liu
2012-07-05 18:48 ` Dong Liu
2012-07-06 6:20 ` Dong Liu
2012-07-06 11:40 ` Carsten Emde
2012-07-06 16:03 ` Dong Liu
2012-07-06 21:01 ` Carsten Emde
2012-07-09 4:33 ` Dong Liu
2012-07-09 6:53 ` Carsten Emde
2012-07-09 14:46 ` Dong Liu
2012-07-06 15:58 ` Dong Liu
2012-07-06 17:32 ` Dong Liu
2012-07-12 20:27 ` Dong Liu
2012-06-28 3:23 Dong Liu
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