From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754149Ab2JHV5p (ORCPT ); Mon, 8 Oct 2012 17:57:45 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:49016 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751963Ab2JHV5n (ORCPT ); Mon, 8 Oct 2012 17:57:43 -0400 Message-ID: <50734C53.70905@gmail.com> Date: Mon, 08 Oct 2012 15:57:39 -0600 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:15.0) Gecko/20120907 Thunderbird/15.0.1 MIME-Version: 1.0 To: Arnaldo Carvalho de Melo CC: linux-kernel@vger.kernel.org, mingo@kernel.org, peterz@infradead.org, fweisbec@gmail.com, Xiao Guangrong , Dong Hao Subject: Re: [PATCH 12/12] perf kvm: add live mode References: <1349716656-48165-1-git-send-email-dsahern@gmail.com> <1349716656-48165-13-git-send-email-dsahern@gmail.com> <20121008203534.GF2631@ghostprotocols.net> <50733D72.9010100@gmail.com> <20121008214439.GM2631@ghostprotocols.net> In-Reply-To: <20121008214439.GM2631@ghostprotocols.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/8/12 3:44 PM, Arnaldo Carvalho de Melo wrote: >> On my Westmere based server I am not seeing problems with timestamps >> and ordering (prior testing was on a Nehalem based server). It just >> weathered a 5 minute or so barrage of > 100,000 events per second >> (peaking at around 360k events/sec) with no problem. > > Interesting, but does this involves consuming samples from multiple > CPUs? yes. 4 vcpus that can and do roam the pcpus. David