Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755906Ab0LCGse (ORCPT ); Fri, 3 Dec 2010 01:48:34 -0500 Received: from mailout-de.gmx.net ([213.165.64.23]:39101 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1751489Ab0LCGsd (ORCPT ); Fri, 3 Dec 2010 01:48:33 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX19NSQl4NXBNRToVvQd70agwt6DCZ4g+hROwRTZUrE axW3vDpxqFJi9z Subject: Re: [PATCH v4] sched: automated per session task groups From: Mike Galbraith To: Paul Turner Cc: Ingo Molnar , Oleg Nesterov , Peter Zijlstra , Linus Torvalds , LKML In-Reply-To: <4CF87C14.8000708@google.com> References: <20101121133744.GA10765@elte.hu> <1290700829.4759.16.camel@maggy.simson.net> <1290954299.30515.15.camel@marge.simson.net> <4CF5C379.8030204@google.com> <1291184173.7466.147.camel@marge.simson.net> <4CF87C14.8000708@google.com> Content-Type: text/plain Date: Fri, 03 Dec 2010 07:48:29 +0100 Message-Id: <1291358909.4378.17.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1854 Lines: 49 On Thu, 2010-12-02 at 21:11 -0800, Paul Turner wrote: > On 11/30/10 22:16, Mike Galbraith wrote: > > On Tue, 2010-11-30 at 19:39 -0800, Paul Turner wrote: > >> On 11/28/10 06:24, Mike Galbraith wrote: > >>> > >>> Something else is seriously wrong though. 36.1 with attached (plus > >>> sched, cgroup: Fixup broken cgroup movement) works a treat, whereas > >>> 37.git and tip with fixlet below both suck rocks. With a make -j40 > >>> running, wakeup-latency is showing latencies of>100ms, amarok skips, > >>> mouse lurches badly.. generally horrid. Something went south. > >> > >> I'm looking at this. > >> > >> The share:share ratios looked good in static testing, but perhaps we > >> need a little more wake-up boost to improve interactivity. > > > > Yeah, feels like a wakeup issue. I too did a (brief) static test, and > > that looked ok. > > > > -Mike > > > > Hey Mike, > > Does something like the below help? Unfortunately not. For example, Xorg+mplayer needs (30 sec refresh).. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ P COMMAND 6487 root 20 0 366m 30m 5100 S 31 0.4 2:04.83 2 Xorg 4454 root 20 0 318m 28m 15m S 29 0.4 0:38.06 3 mplayer ..but gets this when a heavy kbuild is running along with them. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ P COMMAND 6487 root 20 0 366m 30m 5136 S 12 0.4 2:25.98 1 Xorg 5595 root 20 0 318m 28m 15m R 8 0.4 0:09.31 3 mplayer There are 4 task groups active at this time, Xorg, mplayer, Amarok and konsole where the kbuild is running make -j40. -Mike -- 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/