Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750920AbWCUGrk (ORCPT ); Tue, 21 Mar 2006 01:47:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751178AbWCUGrk (ORCPT ); Tue, 21 Mar 2006 01:47:40 -0500 Received: from willy.net1.nerim.net ([62.212.114.60]:25611 "EHLO willy.net1.nerim.net") by vger.kernel.org with ESMTP id S1750920AbWCUGrk (ORCPT ); Tue, 21 Mar 2006 01:47:40 -0500 Date: Tue, 21 Mar 2006 07:47:23 +0100 From: Willy Tarreau To: Mike Galbraith Cc: lkml , Ingo Molnar , Andrew Morton , Con Kolivas Subject: Re: interactive task starvation Message-ID: <20060321064723.GH21493@w.ods.org> References: <200603081013.44678.kernel@kolivas.org> <20060307152636.1324a5b5.akpm@osdl.org> <200603090036.49915.kernel@kolivas.org> <20060317090653.GC13387@elte.hu> <1142592375.7895.43.camel@homer> <1142615721.7841.15.camel@homer> <1142838553.8441.13.camel@homer> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1142838553.8441.13.camel@homer> User-Agent: Mutt/1.5.10i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1700 Lines: 58 Hi Mike, On Mon, Mar 20, 2006 at 08:09:13AM +0100, Mike Galbraith wrote: (...) > For those interested in these kind of things, here are the numbers for > 2.6.16-rc6-mm2 with my [tarball] throttle patches applied... > > [root]:# time netstat|grep :81|wc -l > 1681 > > real 0m1.525s > user 0m0.141s > sys 0m0.136s > [root]:# time netstat|grep :81|wc -l > 1491 > > real 0m0.356s > user 0m0.130s > sys 0m0.114s > [root]:# time netstat|grep :81|wc -l > 1527 > > real 0m0.343s > user 0m0.129s > sys 0m0.114s > [root]:# time netstat|grep :81|wc -l > 1568 > > real 0m0.512s > user 0m0.112s > sys 0m0.138s > > ...while running with the same apache loadavg of over 10, and tunables > set to server mode (0,0). > > > Even a desktop running with these settings is so interactive that I > could play a game of Maelstrom (asteroids like thing) while doing a make > -j30 in slow nfs mount and barely feel it. In a local filesystem, I > could't feel it at all, so I added a thud 3, irman2 and a bonnie -s 2047 > for good measure. Try that with stock :) > Very good job ! I told Grant in a private email that I felt confident the problem would quickly be solved now that someone familiar with the scheduler could reliably reproduce it. Your numbers look excellent, I'm willing to test. Could you remind us what kernel and what patches we need to apply to try the same, please ? Cheers, Willy - 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/