From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751103AbdE2NQq (ORCPT ); Mon, 29 May 2017 09:16:46 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40454 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750913AbdE2NQp (ORCPT ); Mon, 29 May 2017 09:16:45 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 5CB825A5D Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jolsa@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 5CB825A5D Date: Mon, 29 May 2017 15:16:42 +0200 From: Jiri Olsa To: Peter Zijlstra Cc: kan.liang@intel.com, acme@kernel.org, tglx@linutronix.de, mingo@redhat.com, linux-kernel@vger.kernel.org, eranian@google.com, jolsa@kernel.org, elliott@hpe.com, ak@linux.intel.com Subject: Re: [PATCH V2 0/2] measure SMI cost (user) Message-ID: <20170529131642.GA3570@krava> References: <1495825538-5230-1-git-send-email-kan.liang@intel.com> <20170529124637.GA1957@krava> <20170529125239.sxd7dp4gyjjtws5z@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170529125239.sxd7dp4gyjjtws5z@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.8.0 (2017-02-23) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Mon, 29 May 2017 13:16:45 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 29, 2017 at 02:52:39PM +0200, Peter Zijlstra wrote: > On Mon, May 29, 2017 at 02:46:37PM +0200, Jiri Olsa wrote: > > > for some reason I can't get single SMI count generated, > > is there a setup/bench that would provoke that? > > Not having SMIs is a good thing ;-) > > Not sure we can tickle them in a reliable way. yea I saw some counts last time, now just zero so I was wondering if it's working jirka