From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Steven Noonan <steven@uplinklabs.net>
Cc: linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: bisected: 'perf top' causing soft lockups under Xen
Date: Fri, 10 Feb 2012 18:28:21 +0100 [thread overview]
Message-ID: <1328894901.25989.20.camel@laptop> (raw)
In-Reply-To: <CAKbGBLgVyWC3iuu8n+aQ8UhziSPnbpHVNGtQ=9m-PzvVA1kzdg@mail.gmail.com>
On Thu, 2012-02-09 at 18:32 -0800, Steven Noonan wrote:
> [ 88.517599] [<ffffffff81085a86>] smp_call_function_single+0xec/0xfd
This looks like its waiting for an IPI to complete..
There's no actual BUGS or WARNs in the output, just the soft lockup
thing saying things are taking a bit of time (clearly 15s waiting for an
IPI isn't quite normal).
I've no idea why this wouldn't work on Xen, nor do the trace have any
Xen specific muck in them.
next prev parent reply other threads:[~2012-02-10 17:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-10 2:32 bisected: 'perf top' causing soft lockups under Xen Steven Noonan
2012-02-10 16:12 ` Konrad Rzeszutek Wilk
2012-02-10 17:24 ` Peter Zijlstra
2012-02-10 17:28 ` Peter Zijlstra [this message]
2012-02-10 19:04 ` Konrad Rzeszutek Wilk
2012-02-11 2:34 ` Ben Guthro
2012-02-12 20:50 ` Steven Noonan
2012-02-15 8:57 ` Steven Noonan
2012-02-15 9:25 ` Peter Zijlstra
2012-02-15 9:32 ` Steven Noonan
2012-02-15 17:14 ` Konrad Rzeszutek Wilk
2012-02-15 16:17 ` Konrad Rzeszutek Wilk
2012-03-20 15:23 ` Konrad Rzeszutek Wilk
2012-03-20 15:33 ` Peter Zijlstra
2012-02-10 19:14 ` Steven Noonan
2012-02-10 19:27 ` Steven Noonan
2012-02-10 19:29 ` Arnaldo Carvalho de Melo
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