Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752159Ab3FZP36 (ORCPT ); Wed, 26 Jun 2013 11:29:58 -0400 Received: from merlin.infradead.org ([205.233.59.134]:32815 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751902Ab3FZP34 (ORCPT ); Wed, 26 Jun 2013 11:29:56 -0400 Date: Wed, 26 Jun 2013 12:42:43 +0200 From: Peter Zijlstra To: Ingo Molnar Cc: Mike Galbraith , Dave Chiluk , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: Scheduler accounting inflated for io bound processes. Message-ID: <20130626104243.GE28407@twins.programming.kicks-ass.net> References: <51C35C05.1070005@canonical.com> <1372176104.7497.86.camel@marge.simpson.net> <1372182534.7497.129.camel@marge.simpson.net> <20130626093713.GA27385@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130626093713.GA27385@gmail.com> 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 Content-Length: 540 Lines: 11 On Wed, Jun 26, 2013 at 11:37:13AM +0200, Ingo Molnar wrote: > Would be very nice to randomize the sampling rate, by randomizing the > intervals within a 1% range or so - perf tooling will probably recognize > the different weights. You're suggesting adding noise to the regular kernel tick? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/