From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752036AbbBLWuy (ORCPT ); Thu, 12 Feb 2015 17:50:54 -0500 Received: from mail-ie0-f174.google.com ([209.85.223.174]:40587 "EHLO mail-ie0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751561AbbBLWuw (ORCPT ); Thu, 12 Feb 2015 17:50:52 -0500 Message-ID: <54DD2E49.9070402@acm.org> Date: Thu, 12 Feb 2015 16:50:49 -0600 From: Corey Minyard Reply-To: minyard@acm.org User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Huang Ying , Corey Minyard CC: LKML , LKP ML Subject: Re: [LKP] [ipmi] d9b7e4f717a: +52.5% turbostat.%Busy References: <1423627517.8112.0.camel@intel.com> In-Reply-To: <1423627517.8112.0.camel@intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'm not quite sure how to interpret this data, but I'm assuming that with the periodic checks it's waking up a lot more than it used to. I'm not sure why this is the case, but it depends on what userland software is doing with the driver. I'll try to reproduce and see what I can find. -corey On 02/10/2015 10:05 PM, Huang Ying wrote: > FYI, we noticed the below changes on > > commit d9b7e4f717a167610a49ceb9e5969e80146c89a8 ("ipmi: Periodically check to see if irqs and messages are set right") > > testbox/testcase/testparams: avoton3/idle/performance-10m > > 6a11e5c67a397e9a d9b7e4f717a167610a49ceb9e5 > ---------------- -------------------------- > %stddev %change %stddev > \ | \ > 0.10 ± 0% +52.5% 0.15 ± 2% turbostat.%Busy > 2 ± 0% +50.0% 3 ± 0% turbostat.Avg_MHz > > turbostat.%Busy > > 0.2 ++----O-O------------------------------------------------------------+ > | | > 0.18 ++ | > | | > | | > 0.16 ++ O O O O O O O O O O O O O O | > O O O O O O O O | > 0.14 ++ | > | | > 0.12 ++ *.* * | > | .. + : + | > | .* + : + | > 0.1 *+ *.. .*.*.. .*..* *..*..*.*..*..*..*.*..*..*..*.*..*..* > | *. *. | > 0.08 ++-------------------------------------------------------------------+ > > > [*] bisect-good sample > [O] bisect-bad sample > > To reproduce: > > apt-get install ruby ruby-oj > git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git > cd lkp-tests > bin/setup-local job.yaml # the job file attached in this email > bin/run-local job.yaml > > Disclaimer: > Results have been estimated based on internal Intel analysis and are provided > for informational purposes only. Any difference in system hardware or software > design or configuration may affect actual performance. > > > > > _______________________________________________ > LKP mailing list > LKP@linux.intel.com >