From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754944AbYLUQhb (ORCPT ); Sun, 21 Dec 2008 11:37:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753299AbYLUQhT (ORCPT ); Sun, 21 Dec 2008 11:37:19 -0500 Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121]:54788 "EHLO cdptpa-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753260AbYLUQhS (ORCPT ); Sun, 21 Dec 2008 11:37:18 -0500 Message-ID: <494E586C.7070107@cfl.rr.com> Date: Sun, 21 Dec 2008 09:53:32 -0500 From: Mark Hounschell User-Agent: Thunderbird 2.0.0.18 (X11/20081112) MIME-Version: 1.0 To: linux-kernel , linux-kernel-rt CC: Max Krasnyanskiy Subject: processor isolation inquiry X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It's been some time now since Max K. brought up the complete processor isolation discussion. I know his original patch was NAK'd but some work on this was put into cpusets. I'm unclear as to what actually has been or will be implemented. The 2 things I'm most interested in are work queues, and local timer interrupts. Is it yet possible to isolate a processor from either of these 2 things with recent kernels? The kernel doc concerning cpusets doesn't seem to clarify this for me. The Process shielding instructions at http://rt.wiki.kernel.org/index.php/CPU_shielding_using_/proc_and_/dev/cpuset don't seem to help with work queues or local timer interrupts. Should they? Thanks in advance for any pointers Mark