Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756169Ab0KKTiP (ORCPT ); Thu, 11 Nov 2010 14:38:15 -0500 Received: from smtp-out-138.synserver.de ([212.40.180.138]:1057 "HELO smtp-out-138.synserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754080Ab0KKTiN (ORCPT ); Thu, 11 Nov 2010 14:38:13 -0500 X-SynServer-TrustedSrc: 1 X-SynServer-AuthUser: markus@trippelsdorf.de X-SynServer-PPID: 23307 Date: Thu, 11 Nov 2010 20:38:10 +0100 From: Markus Trippelsdorf To: Mike Galbraith Cc: Linus Torvalds , Oleg Nesterov , Peter Zijlstra , Mathieu Desnoyers , Ingo Molnar , LKML Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups Message-ID: <20101111193810.GB1564@arch.trippelsdorf.de> References: <1287648715.9021.20.camel@marge.simson.net> <20101021105114.GA10216@Krystal> <1287660312.3488.103.camel@twins> <20101021162924.GA3225@redhat.com> <1288076838.11930.1.camel@marge.simson.net> <1288078144.7478.9.camel@marge.simson.net> <1289489200.11397.21.camel@maggy.simson.net> <20101111191556.GA1564@arch.trippelsdorf.de> <1289504111.21413.2.camel@maggy.simson.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1289504111.21413.2.camel@maggy.simson.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1478 Lines: 48 On 2010.11.11 at 12:35 -0700, Mike Galbraith wrote: > On Thu, 2010-11-11 at 20:15 +0100, Markus Trippelsdorf wrote: > > > Just to add some data; here are the results from my machine (AMD 4 > > cores) running a -j4 kernel build, while I browsed the web: > > > > 1) perf sched record sleep 30 > > > > without: > > total_wakeups: 44306 > > avg_wakeup_latency (ns): 36784 > > min_wakeup_latency (ns): 0 > > max_wakeup_latency (ns): 9378852 > > > > with: > > total_wakeups: 43836 > > avg_wakeup_latency (ns): 67607 > > min_wakeup_latency (ns): 0 > > max_wakeup_latency (ns): 8983036 > > > > 2) perf record -a -e sched:sched_switch -e sched:sched_wakeup sleep 10 > > > > without: > > total_wakeups: 13195 > > avg_wakeup_latency (ns): 48484 > > min_wakeup_latency (ns): 0 > > max_wakeup_latency (ns): 8722497 > > > > with: > > total_wakeups: 14106 > > avg_wakeup_latency (ns): 92532 > > min_wakeup_latency (ns): 20 > > max_wakeup_latency (ns): 5642393 > > > > So the avg_wakeup_latency nearly doubled with your patch, while the > > max_wakeup_latency is lowered by a good amount. > > When you say with/without, does that mean enabled/disabled, or > patched/virgin and/or cgroups/nocgroups? Patched/virgin and nocgroups -- Markus -- 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/