From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264471AbUEYB5n (ORCPT ); Mon, 24 May 2004 21:57:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264461AbUEYB5n (ORCPT ); Mon, 24 May 2004 21:57:43 -0400 Received: from alt.aurema.com ([203.217.18.57]:52902 "EHLO smtp.sw.oz.au") by vger.kernel.org with ESMTP id S264471AbUEYB5M (ORCPT ); Mon, 24 May 2004 21:57:12 -0400 Message-ID: <40B2A78E.3060302@aurema.com> Date: Tue, 25 May 2004 11:55:26 +1000 From: Peter Williams Organization: Aurema Pty Ltd User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Hubertus Franke CC: Rik van Riel , Shailabh Nagar , kanderso@redhat.com, Chandra Seetharaman , limin@sgi.com, jlan@sgi.com, linux-kernel@vger.kernel.org, jh@sgi.com, Paul Jackson , gh@us.ibm.com, Erik Jacobson , ralf@suse.de, lse-tech@lists.sourceforge.net, Vivek Kashyap , mason@suse.com Subject: Re: Minutes from 5/19 CKRM/PAGG discussion References: <40B2534E.3040302@watson.ibm.com> In-Reply-To: <40B2534E.3040302@watson.ibm.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hubertus Franke wrote: > > One important input the PAGG team could give is some real > examples where actually multiple associations to different groups > is required and help us appreciate that position and let us > see how this would/could be done in CKRM. One example would be the implementation of CPU sets (or pools) a la Solaris where there are named CPU pools to which processors and processes are assigned. Processors can be moved between CPU pools and when this happens it is necessary to visit all the processes that are assigned to the pools involved (one losing and one gaining the processor) and change their CPU affinity masks to reflect the new assignment of processors. PAGG would be ideal for implementing this. At the same time, a resource management client could be controlling resources allocated to processes based on some other criteria such as the real user or the application being run without regard to which CPU pool they are running in. Peter -- Dr Peter Williams, Chief Scientist peterw@aurema.com Aurema Pty Limited Tel:+61 2 9698 2322 PO Box 305, Strawberry Hills NSW 2012, Australia Fax:+61 2 9699 9174 79 Myrtle Street, Chippendale NSW 2008, Australia http://www.aurema.com