From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750735AbWDIMOp (ORCPT ); Sun, 9 Apr 2006 08:14:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750736AbWDIMOp (ORCPT ); Sun, 9 Apr 2006 08:14:45 -0400 Received: from outpost.ds9a.nl ([213.244.168.210]:12736 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id S1750735AbWDIMOp (ORCPT ); Sun, 9 Apr 2006 08:14:45 -0400 Date: Sun, 9 Apr 2006 14:14:37 +0200 From: bert hubert To: Mike Galbraith Cc: Con Kolivas , lkml , Ingo Molnar , Andrew Morton , Nick Piggin , Peter Williams Subject: Re: [patch][rfc] quell interactive feeding frenzy Message-ID: <20060409121436.GA28075@outpost.ds9a.nl> Mail-Followup-To: bert hubert , Mike Galbraith , Con Kolivas , lkml , Ingo Molnar , Andrew Morton , Nick Piggin , Peter Williams References: <1144402690.7857.31.camel@homer> <200604072256.27665.kernel@kolivas.org> <1144417064.8114.26.camel@homer> <200604072356.03580.kernel@kolivas.org> <1144419294.14231.7.camel@homer> <20060409111436.GA26533@outpost.ds9a.nl> <1144582778.13991.10.camel@homer> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1144582778.13991.10.camel@homer> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Apr 09, 2006 at 01:39:38PM +0200, Mike Galbraith wrote: > Ok, unusable may be overstated. Nonetheless, that bit of code causes > serious problems. It makes my little PIII/500 test box trying to fill > one 100Mbit local network unusable. That is not overstated. If you try to make a PIII/500 fill 100mbit of TCP/IP using lots of different processes, that IS a corner load. I'm sure you can fix this (rare) workload but are you very sure you are not killing off performance for other situations? I get flashbacks to the old days of the VM where we had lots patches around that would all solve (more or less) real problems, but never all at the same time.. -- http://www.PowerDNS.com Open source, database driven DNS Software http://netherlabs.nl Open and Closed source services