From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756499Ab1HEMsO (ORCPT ); Fri, 5 Aug 2011 08:48:14 -0400 Received: from DMZ-MAILSEC-SCANNER-4.MIT.EDU ([18.9.25.15]:51512 "EHLO dmz-mailsec-scanner-4.mit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751979Ab1HEMsL (ORCPT ); Fri, 5 Aug 2011 08:48:11 -0400 X-AuditID: 1209190f-b7b44ae000000a24-76-4e3be5f3d45a Message-ID: <4E3BE686.7070501@mit.edu> Date: Fri, 05 Aug 2011 08:48:06 -0400 From: Andy Lutomirski User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20110707 Thunderbird/5.0 MIME-Version: 1.0 To: "Yung, Winson W" CC: "linux-kernel@vger.kernel.org" Subject: Re: Is there a way to offload everything from cpu0 to other cpus? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupmleLIzCtJLcpLzFFi42IR4hTV1v381NrPYPshMYvLu+awWbQc3sPi wOSxeM9LJo/Pm+QCmKK4bFJSczLLUov07RK4MibPmc1YMIO5onfSRMYGxiNMXYwcHBICJhKb N2p1MXICmWISF+6tZ+ti5OIQEtjHKHF4/xcoZz2jxNLHq1ghnDdMEm+nN7CCtPAKqEks/rOa CcRmEVCVuDp1OjuIzSagItGx9AFYXFQgSOL+7wYWiHpBiZMzn4DZIgJ6EleOPmIDsZkFHCVu 730LVi8s4CWxYMY+sOuEBEIlbn9UBwlzCoRJtLWeYwcJMwtYS3zbXQTRKS+x/e0c5gmMgrOQ LJiFUDULSdUCRuZVjLIpuVW6uYmZOcWpybrFyYl5ealFuiZ6uZkleqkppZsYwYEryb+D8dtB pUOMAhyMSjy8P3dZ+QmxJpYVV+YeYpTkYFIS5T31xNpPiC8pP6UyI7E4I76oNCe1+BCjBAez kgiv5B2gHG9KYmVValE+TEqag0VJnLfc+7+vkEB6YklqdmpqQWoRTFadg0Pg49uTIlIsefl5 qUoSvKHAuBUSLEpNT61Iy8wpQahk4uAE2cMDtMcdpIa3uCAxtzgzHSJ/ilGXY/Xfj0cZhcAG SYnzyoIUCYAUZZTmwc2BpaFXjOJAHwpDrOMBpjC4Sa+AljABLfn/3gJkSUkiQkqqgVF8pv9N WfY1rtscFni+FDzQanyRi09oR8lUY8vNv1y+7Fzm1nOL2cz3f47SX21ft4VR6jv0Wzq1nBZd NOax+PpneerN8jTjdzf4ZM5lGbY160rfFWaw9m0/+Fv50vzlj9W+ez/kmpz264B72OydFydN Ep64+P/uB1/WPCpOdvy3vr3/3H6Fa2xKLMUZiYZazEXFiQBihu9lHgMAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/04/2011 10:53 PM, Yung, Winson W wrote: > Hi, I would like to know whether it is possible to offload everything (kernel threads/user apps) to cpu1...x so that I can force cpu0 go into idle? > > I can affinity all the interrupt to a different cpu by playing with the /proc/irq/irqx/smp_affinity, how about everything else? > You probably want the isolcpus boot option. --Andy > /Winson.