Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751776AbWCNJ7M (ORCPT ); Tue, 14 Mar 2006 04:59:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752049AbWCNJ7M (ORCPT ); Tue, 14 Mar 2006 04:59:12 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:653 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1751776AbWCNJ7M (ORCPT ); Tue, 14 Mar 2006 04:59:12 -0500 Date: Tue, 14 Mar 2006 10:56:54 +0100 From: Ingo Molnar To: Mike Galbraith Cc: lkml , Andrew Morton Subject: Re: [2.6.16-rc6 patch] remove sleep_avg multiplier Message-ID: <20060314095654.GA8756@elte.hu> References: <1142329861.9710.16.camel@homer> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1142329861.9710.16.camel@homer> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -2.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.5 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_50 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 0.0 BAYES_50 BODY: Bayesian spam probability is 40 to 60% [score: 0.5000] 0.8 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1165 Lines: 32 * Mike Galbraith wrote: > Greetings, > > The patchlet below removes the sleep_avg multiplier. This multiplier > was necessary back when we had 10 seconds of dynamic range in sleep_avg, > but now that we only have one second, it causes that one second to be > compressed down to 100ms in some cases. This is particularly noticeable > when compiling a kernel in a slow NFS mount, and I believe it to be a > very likely candidate for other recently reported network related > interactivity problems. > > In testing, I can detect no negative impact of this removal. IMHO, this > constitutes a bug-fix, and as such is suitable for 2.6.16. > > -Mike > > Signed-off-by: Mike Galbraith looks good to me. The biggest complaint against the current scheduler is over-eager interactivity boosting - this patch moderates that in a smooth way. Acked-by: Ingo Molnar 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/