From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932195AbVHWPGX (ORCPT ); Tue, 23 Aug 2005 11:06:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932186AbVHWPGX (ORCPT ); Tue, 23 Aug 2005 11:06:23 -0400 Received: from e2.ny.us.ibm.com ([32.97.182.142]:10918 "EHLO e2.ny.us.ibm.com") by vger.kernel.org with ESMTP id S932191AbVHWPGV (ORCPT ); Tue, 23 Aug 2005 11:06:21 -0400 Date: Tue, 23 Aug 2005 20:37:57 +0530 From: Dinakar Guniguntala To: Paul Jackson Cc: Andrew Morton , nickpiggin@yahoo.com.au, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, torvalds@osdl.org, mingo@elte.hu, hawkes@sgi.com Subject: Re: [PATCH 2.6.13-rc6] cpu_exclusive sched domains on partial nodes temp fix Message-ID: <20050823150757.GA8580@in.ibm.com> Reply-To: dino@in.ibm.com References: <20050823080427.14740.20177.sendpatchset@jackhammer.engr.sgi.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="gKMricLos+KVdGMg" Content-Disposition: inline In-Reply-To: <20050823080427.14740.20177.sendpatchset@jackhammer.engr.sgi.com> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --gKMricLos+KVdGMg Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Aug 23, 2005 at 01:04:27AM -0700, Paul Jackson wrote: > If Dinakar, Hawkes and Nick concur (and no one else complains too > loud) then the following should go into 2.6.13, to avoid the potential > kernel oops that Hawkes reported in Dinakar's feature to allow user > control of dynamic sched domain placement using cpu_exclusive cpusets. I agree this is the way to go for 2.6.13 before we fix things the right way for 2.6.14. Thanks for the patch Paul. > This patch should allow proceeding with this new feature in 2.6.13 for > the configurations in which it is useful (node alligned sched domains) > while avoiding trying to setup sched domains in the less useful cases > that can cause the kernel corruption and oops. > Dunno if it is something in my setup (4 CPU Power5 box with NUMA enabled) but this patch causes some hard hangs when I run the attached script. The same script runs for much longer with Ingo's changes but panics as I had described earlier. I am still debugging what causes this. -Dinakar --gKMricLos+KVdGMg Content-Type: application/x-gzip Content-Disposition: attachment; filename="sd-stress.tar.gz" Content-Transfer-Encoding: base64 H4sIAGQ5C0MAA+1YW2/bNhT2q/UrWNsP3YMjkr5tGVxg6II2gJMGidc+FMWgWXQsTBdDlJPu 3+9QsinqGipRgz7ovMgiP57znaskc3sc+OyM73o/TjDBeDGb9TDGZDEj4orJdBpfhcznix7B E0wn88l0AThCpgvcQ/gHcpJy4JEVItSzHT+ox7GQvwah15XhG/Mfxzf5zjDY930QRujqen3z 6fJ6vTQ3e3A64qeN9cXVzZ+Xt2Q5OkHMiHn7s9FoTHIYuhyd0BJDpYX3N3/dXS3xeKIuwD1R 7z+SJc7c0yWRGr58vlNYPD5wMCAprGEPAGaUUr+4/gC0Ycdk/j1RVqlcpafV1So57roZwsJk jrKwhMdUXYoN4dyKYK6sgIGJYdy9v728WUOEluYu8Jgp6k9E3A48k29CZw/sjZFEmdwe8yhk nJ+JXLWWf1Vta0pzUt//hGBKc/1PKZl1/f8aovS/Fxz8CI0jlPQ98uHBgGSXIfoOmTZ7MP0D dMbGTncMY4igjMg5uoNT7PvGPXDngaHAR49OtAM9sUaDbXYBGmggB4b3r+2EaLxHcozEFuVN zDnWh9E75DGPK0sElkDN31J/bNkImWUfqdICge1WMoAW5ehrurcP2YMTHLj7H/D8lnrxAiWD nAP1bCfn6A/bTlRGAbIUk0mmUk5PQge1cUr3RmJQJfu8QGhalb90xXIFXjibkmt0rJ5ontEs 8ZtbHkOidINtEgOLg3KHR45/DzpZJiWZZD5TwUA3ZPPKYlH1pXz08M3qaKGhUyZgu03JNDzY jNWv5+iWeQGoiAO+DQOvtsT18I3q/COpSttvuX7ya4g9jdWuFoLPUeiJEVhtrhozyE7nBJTO zoKxsnEcD4/jcyDONId3lNg3hUGzg02meiY6Lxz2pDioj3Nnb4XMz9W14l6jc/VFX/Ccqp7T QkHStnyf6PugTJ9GxwZVSSzSq/BZw49ptrnUAlPKf+e4NvBTHGl0rtKTOClXld06KxlJ9ZbQ W8d12b3l/qJwfYmaeurVA47Mn2G0wPz5Sup5l7LeuMzyD/uj+eNdTk925lHtgZjovPAjFopy EZ8GEUq+j1DEOIzWGPcIXjD0FUXhgaFvvxt2YPQzJvpHG/DRmH1vNvrpKIDN5Fj8o6TT+7lw CG3HiPTruqd2U2UAH7AJg/iHBgPAtctgtUoIiKuG/dWqXfPicz0hkPzSoCCArZOgkgTVJUHb ICFzf6zXJArpDTWUCj31jYKHtFVXPmwNkfj3J24dXkCWvA70M138RCTKHKp7CGtHKjN79C1W Hqun8lKi6XCvIVOaIxnoZrnIqG45R0UiNEOEFt0vawRJZajTACU+loS9ikUTtdkXCWCXAQ7r UquVjTws/xx8og5s+MRt76/FTjrppJNOOumkk0466aSTTjrp5CeR/wHARxE1ACgAAA== --gKMricLos+KVdGMg--