Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262357AbTEKFAm (ORCPT ); Sun, 11 May 2003 01:00:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263269AbTEKFAm (ORCPT ); Sun, 11 May 2003 01:00:42 -0400 Received: from franka.aracnet.com ([216.99.193.44]:3818 "EHLO franka.aracnet.com") by vger.kernel.org with ESMTP id S262357AbTEKFAl (ORCPT ); Sun, 11 May 2003 01:00:41 -0400 Date: Sat, 10 May 2003 19:59:03 -0700 From: "Martin J. Bligh" To: Zwane Mwaikambo cc: Jos Hulzink , linux-kernel Subject: Re: irq balancing: performance disaster Message-ID: <8270000.1052621941@[10.10.2.4]> In-Reply-To: References: <200305110118.10136.josh@stack.nl> <7750000.1052619248@[10.10.2.4]> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1153 Lines: 25 >> > While tackling bug 699, it became clear to me that irq balancing is the cause >> > of the performance problems I, and all people using the SMP kernel Mandrake >> > 9.1 ships, are dealing with. I got the problems with 2.5.69 too. After >> > disabling irq balancing, the system is remarkably faster, and much more >> > responsive. >> > >> > For those interested in the issue, please look at bug 699. >> >> Could you test out this patch from Keith Mannthey if you're having trouble? >> It makes irq balance a config option, which makes it easier to disable. >> Various people have requested it, but I don't have a box to test it on ;-( >> Pulled out of -mjb tree, but should go onto mainline easily. > > What's wrong with the noirqbalance parameter? You have to add it ;-) Functionally equivalanet, just an easier method for people who want to do such things in userspace for whatever reason. M. - 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/