From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xensource.com, jun.nakajima@intel.com,
qing.he@intel.com, eddie.dong@intel.com,
dietmar.hahn@ts.fujitsu.com, jbeulich@suse.com,
suravee.suthikulpanit@amd.com, jiongxi.li@intel.com
Subject: Re: vpmu=1 and running 'perf top' within a PVHVM guest eventually hangs dom0 and hypervisor has stuck vCPUS. Romley-EP (model=45, stepping=2)
Date: Wed, 13 Mar 2013 15:59:43 -0400 [thread overview]
Message-ID: <5140DAAF.1080109@oracle.com> (raw)
In-Reply-To: <513F95F3.3040508@oracle.com>
On 03/12/2013 04:54 PM, Boris Ostrovsky wrote:
>
> I think by default perf top runs off timer interrupt so it does not
> use HW counters. But watchdog
> is implemented on top of the counters so perhaps it fires the
> interrupt at a bad time, messing
> something up.
>
I was wrong -- perf top does use performance counters by default.
-boris
next prev parent reply other threads:[~2013-03-13 19:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-12 17:30 vpmu=1 and running 'perf top' within a PVHVM guest eventually hangs dom0 and hypervisor has stuck vCPUS. Romley-EP (model=45, stepping=2) Konrad Rzeszutek Wilk
2013-03-12 18:50 ` Boris Ostrovsky
2013-03-12 20:31 ` Konrad Rzeszutek Wilk
2013-03-12 20:54 ` Boris Ostrovsky
2013-03-13 7:51 ` Dietmar Hahn
2013-03-13 8:02 ` Dietmar Hahn
2013-03-13 15:04 ` Konrad Rzeszutek Wilk
2013-03-29 1:14 ` Haitao Shan
2013-03-13 8:26 ` Jan Beulich
2013-03-13 19:59 ` Boris Ostrovsky [this message]
2013-03-13 8:28 ` Jan Beulich
2013-03-13 14:12 ` Konrad Rzeszutek Wilk
2013-03-13 8:33 ` Jan Beulich
2013-03-13 21:27 ` Konrad Rzeszutek Wilk
-- strict thread matches above, loose matches on Subject: below --
2013-03-29 12:29 Boris Ostrovsky
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