From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755237AbaGQI01 (ORCPT ); Thu, 17 Jul 2014 04:26:27 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:33542 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754811AbaGQI0Z (ORCPT ); Thu, 17 Jul 2014 04:26:25 -0400 Date: Thu, 17 Jul 2014 10:26:13 +0200 From: Peter Zijlstra To: Namhyung Kim Cc: Arnaldo Carvalho de Melo , Ingo Molnar , Paul Mackerras , Namhyung Kim , LKML , Jiri Olsa , Minchan Kim Subject: Re: [PATCH] perf stat: Pass PERF_STAT_RUN environment variable for each run Message-ID: <20140717082613.GF19379@twins.programming.kicks-ass.net> References: <1405585266-28268-1-git-send-email-namhyung@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="fOJARmXCc2lxmu6e" Content-Disposition: inline In-Reply-To: <1405585266-28268-1-git-send-email-namhyung@kernel.org> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --fOJARmXCc2lxmu6e Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jul 17, 2014 at 05:21:06PM +0900, Namhyung Kim wrote: > When perf stat runs multiple times via -r option, it's sometimes > useful for a workload to know which run it executing. So pass new > PERF_STAT_RUN environment variable to the workload for each run > (starting from 1). This seems counter intuitive, runs should be _identical_ otherwise there's no point. That means the workload should very much _not_ know these things. --fOJARmXCc2lxmu6e Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJTx4ilAAoJEHZH4aRLwOS6uVsQAJ2m0Sag4LqFtRPwqaGqUDlF ir1+LH/cUbLIEP/EDz8BqVGziPWUFEYRd7ejHgrYmakdLeLPyKozFnTzp3b3A9JG Nyu314YesU0GuHHTf+dKkllUhHQJFqU1l+PLXEG1VC/t1CSr5At27xmeMt13qhq4 kkyrl9vsneJMGAHyGfVH+gJSUMjt3qZmxj4equhTV4yXjy4VwHx2JkuEJp8hEuTg BVvzalfAD3Fc1SswlRyRMPwFUAjfi2GxI9rsiMEEoPtuIQn/s2UHI4kJoLiKF86x /E5nEAGn53JtJABxOj4wF+x8CCQUlnVFxFeZFlNtCEhtyUslCAK9NVjQhUD3U7gH dR7gekiHxDOn39y8sPg9fMz88wmW5aTDMc9atafPmPwUAPpsIYj/5yn0uI7mSCYa CzwAgzP2++b3eKOeeyx8/6arP40is6G9a322YGN45L5aEdBjPYTOaDhyY0Dk0XbP WUkp9xwmxXyy8VWtN8ab5pwUCV8apRBxtftz6kK3LkxG6MnZ5Jvotpz+vUS2jZqn /CbKByvMTlA85v7OTcP8ERreyuVOw6AJsiFPP66gF+2S8tDImLmpXNMpiTlWkwiE ZVKTrMbQcFRVa4AVmRLcmM8So8lMx2mO39V2+LiTnatTHAjOQyrLFZ5NexYED06S PqiLAnjiMeqprjECJQ74 =rRtj -----END PGP SIGNATURE----- --fOJARmXCc2lxmu6e--