From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751492AbZHZPLP (ORCPT ); Wed, 26 Aug 2009 11:11:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751386AbZHZPLO (ORCPT ); Wed, 26 Aug 2009 11:11:14 -0400 Received: from mail-bw0-f219.google.com ([209.85.218.219]:57868 "EHLO mail-bw0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751142AbZHZPLN (ORCPT ); Wed, 26 Aug 2009 11:11:13 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:date :message-id:mime-version:x-mailer:content-transfer-encoding; b=mhFiqPQSzsbLzIw/wFXSEil1l/UPDdbc9EyG2/D9RMW0zdWgo5H8FmMCpx6W3QOClc jT2bFeOequISyAYNgcFXRPKKDkNSL9mDo+a3G7FM+2tmtHMk1i6hWKnmGUC5cT0JkFTs nVVYv3xVKrtRUVQe8QX5pqSRpoi2l6TlvCup8= Subject: Re: RFC: THE OFFLINE SCHEDULER From: raz ben yehuda To: Pekka Enberg Cc: Maxim Levitsky , Christoph Lameter , Peter Zijlstra , Chris Friesen , Mike Galbraith , riel@redhat.com, mingo@elte.hu, andrew motron , wiseman@macs.biu.ac.il, lkml , linux-rt-users@vger.kernel.org In-Reply-To: <84144f020908260806pb85ee72r7b7e32a07b921b59@mail.gmail.com> References: <1250983671.5688.21.camel@raz> <1251222993.7023.53.camel@marge.simson.net> <1251227322.7538.1172.camel@twins> <4A943A00.9080609@nortel.com> <1251264700.7538.1178.camel@twins> <1251282598.3514.20.camel@raz> <1251297910.1791.22.camel@maxim-laptop> <1251298443.4791.7.camel@raz> <84144f020908260806pb85ee72r7b7e32a07b921b59@mail.gmail.com> Content-Type: text/plain Date: Wed, 26 Aug 2009 18:11:09 +0300 Message-Id: <1251299469.4791.10.camel@raz> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-8.el5_2.3) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org sos linux is at: http://sos-linux.svn.sourceforge.net/viewvc/sos-linux/offsched/ you will find the modules, once shot patches , split patches, and a Documentation folder. On Wed, 2009-08-26 at 18:06 +0300, Pekka Enberg wrote: > On Wed, Aug 26, 2009 at 5:54 PM, raz ben yehuda wrote: > >> I have always been fascinated by the idea of controlling another cpu > >> from the main CPU. > >> > >> Usually these cpus are custom, run proprietary software, and have no > >> datasheet on their I/O interfaces. > >> > >> But, being able to turn an ordinary CPU into something like that seems > >> to be very nice. > >> > >> For example, It might help with profiling. Think about a program that > >> can run uninterrupted how much it wants. > >> > >> I might even be better, if the dedicated CPU would use a predefined > >> reserved memory range (I wish there was a way to actually lock it to > >> that range) > >> > >> On the other hand, I could see this as a jump platform for more > >> proprietary code, something like that: we use linux in out server > >> platform, but out "insert buzzword here" network stack pro+ can handle > >> 100% more load that linux does, and it runs on a dedicated core.... > >> > >> In the other words, we might see 'firmwares' that take an entire cpu for > >> their usage. > > > > This is exactly what offsched (sos) is. you got it. SOS was partly inspired by the notion of a GPU. > > So where are the patches? The URL in the original post returns 404...