Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753874Ab0K2MbG (ORCPT ); Mon, 29 Nov 2010 07:31:06 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:50312 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753474Ab0K2MbE (ORCPT ); Mon, 29 Nov 2010 07:31:04 -0500 Date: Mon, 29 Nov 2010 13:30:42 +0100 From: Ingo Molnar To: Peter Zijlstra Cc: Linus Torvalds , Mike Galbraith , Oleg Nesterov , LKML , Paul Turner Subject: Re: [PATCH v4] sched: automated per session task groups Message-ID: <20101129123042.GA26112@elte.hu> References: <20101121133744.GA10765@elte.hu> <1290700829.4759.16.camel@maggy.simson.net> <1290954299.30515.15.camel@marge.simson.net> <20101128201851.GA20555@elte.hu> <1291031593.32004.19.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1291031593.32004.19.camel@laptop> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2748 Lines: 61 * Peter Zijlstra wrote: > On Sun, 2010-11-28 at 21:18 +0100, Ingo Molnar wrote: > > * Linus Torvalds wrote: > > > > > On Sun, Nov 28, 2010 at 6:24 AM, 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. > > > > > > Can you test -rc3? Is that still ok? And are you perhaps using > > > Nouveau? There's a report of some graphics (?) regression since -rc3 > > > about bad desktop performance: > > > > > > https://bugzilla.kernel.org/show_bug.cgi?id=23912 > > > > > > but it doesn't have any more information yet (so if -rc3 _is_ good for > > > you, and you can add anything to that report, it would be good. The > > > original reporter is hopefully bisecting it now) > > > > Mike, the last pure -rc3 -tip commit is 92c883adf03b - you could try to check that > > out too: it has most of the current sched/core commits, but has none of the post-rc3 > > DRM changes. > > Well we totally re-wrote the cgroup load-balancer in -tip. The thing currently in > -linus is a utter crap because its very strongly serialized across all cores (some > people spend like 25% of their time in there). Yes, 92c883adf03b includes those changes: 08f3c3065f4c: Merge branch 'sched/core' 9437178f623a: sched: Update tg->shares after cpu.shares write d6b5591829bd: sched: Allow update_cfs_load() to update global load 3b3d190ec368: sched: Implement demand based update_cfs_load() c66eaf619c0c: sched: Update shares on idle_balance a7a4f8a752ec: sched: Add sysctl_sched_shares_window 67e86250f8ea: sched: Introduce hierarchal order on shares update list e33078baa4d3: sched: Fix update_cfs_load() synchronization f0d7442a5924: sched: Fix load corruption from update_cfs_shares() 9e3081ca6114: sched: Make tg_shares_up() walk on-demand 3d4b47b4b040: sched: Implement on-demand (active) cfs_rq list 2069dd75c7d0: sched: Rewrite tg_shares_up) 48c5ccae88dc: sched: Simplify cpu-hot-unplug task migration 92fd4d4d67b9: Merge commit 'v2.6.37-rc2' into sched/core I just wanted to give Mike a known-stable sha1 that has -rc3 but not the post-rc3 DRM changes. Thanks, Ingo -- 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/