From: David Ahern <david.ahern@oracle.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: NMI watchdog triggering during load_balance
Date: Mon, 09 Mar 2015 21:06:37 -0600 [thread overview]
Message-ID: <54FE5FBD.3060801@oracle.com> (raw)
In-Reply-To: <1425670155.3775.30.camel@gmx.de>
On 3/6/15 12:29 PM, Mike Galbraith wrote:
> On Fri, 2015-03-06 at 11:37 -0700, David Ahern wrote:
>
>> But, I do not understand how the wrong topology is causing the NMI
>> watchdog to trigger. In the end there are still N domains, M groups per
>> domain and P cpus per group. Doesn't the balancing walk over all of them
>> irrespective of physical topology?
>
> You have this size extra large CPU domain that you shouldn't have,
> massive collisions therein ensue.
>
I was able to get the socket/cores/threads issue resolved, so the
topology is correct. But still need to check out a few things. Thanks
Mike and Peter for the suggestions.
David
next prev parent reply other threads:[~2015-03-10 3:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-06 4:05 NMI watchdog triggering during load_balance David Ahern
2015-03-06 4:52 ` Mike Galbraith
2015-03-06 15:01 ` David Ahern
2015-03-06 18:11 ` Mike Galbraith
2015-03-06 18:37 ` David Ahern
2015-03-06 19:29 ` Mike Galbraith
2015-03-10 3:06 ` David Ahern [this message]
2015-03-07 9:36 ` Peter Zijlstra
2015-03-06 8:51 ` Peter Zijlstra
2015-03-06 15:03 ` David Ahern
2015-03-06 9:07 ` Peter Zijlstra
2015-03-06 15:10 ` David Ahern
2015-03-06 9:12 ` Peter Zijlstra
2015-03-06 15:12 ` David Ahern
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