From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752979AbXD0FcM (ORCPT ); Fri, 27 Apr 2007 01:32:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754045AbXD0FcM (ORCPT ); Fri, 27 Apr 2007 01:32:12 -0400 Received: from mail1.webmaster.com ([216.152.64.169]:2857 "EHLO mail1.webmaster.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753747AbXD0FcL convert rfc822-to-8bit (ORCPT ); Fri, 27 Apr 2007 01:32:11 -0400 From: "David Schwartz" To: Subject: RE: Pin an IRQ to a particular CPU Date: Thu, 26 Apr 2007 22:31:28 -0700 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) In-Reply-To: <2fe399760704261815i428105d4qddc2648688e694bc@mail.gmail.com> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Importance: Normal X-Authenticated-Sender: joelkatz@webmaster.com X-Spam-Processed: mail1.webmaster.com, Thu, 26 Apr 2007 23:31:47 -0700 (not processed: message from trusted or authenticated source) X-MDRemoteIP: 206.171.168.138 X-Return-Path: davids@webmaster.com X-MDaemon-Deliver-To: linux-kernel@vger.kernel.org Reply-To: davids@webmaster.com X-MDAV-Processed: mail1.webmaster.com, Thu, 26 Apr 2007 23:31:48 -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Hello, > > In an effort to increase over all throughput of my Linux NFS file > server, I thought about trying to force an IRQ, for the NIC, to be > serviced by a particular CPU. Is this possible? > > TIA, > Phy /proc/irq/*/smp_affinity I would recommend automatic balancing and leave it at that. This code automatically distributes IRQs to CPUs such that each IRQ can only be serviced by a single CPU and the IRQs are distributed over the CPU set. DS