Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265766AbTGDD6Q (ORCPT ); Thu, 3 Jul 2003 23:58:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265771AbTGDD6Q (ORCPT ); Thu, 3 Jul 2003 23:58:16 -0400 Received: from swan.mail.pas.earthlink.net ([207.217.120.123]:17797 "EHLO swan.mail.pas.earthlink.net") by vger.kernel.org with ESMTP id S265766AbTGDD6J (ORCPT ); Thu, 3 Jul 2003 23:58:09 -0400 Subject: Re: 2.5.74-mm1 and Con Kolivas' CPU scheduler work From: Tom Sightler To: Con Kolivas Cc: "ismail (cartman) donmez" , LKML In-Reply-To: <200307041229.06238.kernel@kolivas.org> References: <200307031936.34458.kde@myrealbox.com> <200307040949.18588.kernel@kolivas.org> <1057284551.1725.8.camel@iso-8590-lx.zeusinc.com> <200307041229.06238.kernel@kolivas.org> Content-Type: text/plain Organization: Message-Id: <1057291914.5681.11.camel@iso-8590-lx.zeusinc.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 04 Jul 2003 00:11:55 -0400 Content-Transfer-Encoding: 7bit X-MailScanner: Found to be clean X-MailScanner-SpamCheck: not spam, SpamAssassin (score=-4.3, required 10, AWL, EMAIL_ATTRIBUTION, IN_REP_TO, REFERENCES, SPAM_PHRASE_02_03) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1672 Lines: 35 On Thu, 2003-07-03 at 22:29, Con Kolivas wrote: > Ah yes I believe I know this issue. The problem is the parent spinning madly > waiting for the child and it is the parent that starves the child. While this > is not a fix, if you can reproduce the problem can you try changing > CHILD_PENALTY in kernel/sched.c from 50 to 100 and see if that makes the > problem go away? I mentioned this hidden in a thread a while ago, and am > trying to get a reasonable fix. Well, perhaps I spoke too soon about this particular issues. I have just compiled 2.5.74-mm1 and it seems to be much better behaved that my previous kernel (2.5.72-mm2). I can no longer reproduce the issue with this new kernel but the problem is easily reproducible with my older kernel. Does 2.5.74-mm1 have a recent version of your patches (I know it has some variation of your patches but you've been cracking them out pretty quick lately). I've run testing with my horror cases of Crossover Plugin and multiple Crossover Office applications running simultaneously and all programs seem responsive, these cases caused all kinds of audio skipping and pauses on the system before. I'm still running some other tests that seem to be showing some strangeness but I need to do some more test on both kernels before I really reports them. Thanks for your hard work on these issues, for my workload things seem to be getting quite a bit better. Later, Tom - 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/