From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751844AbYITP3i (ORCPT ); Sat, 20 Sep 2008 11:29:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750713AbYITP31 (ORCPT ); Sat, 20 Sep 2008 11:29:27 -0400 Received: from gateway-1237.mvista.com ([63.81.120.158]:11776 "EHLO gateway-1237.mvista.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750710AbYITP30 (ORCPT ); Sat, 20 Sep 2008 11:29:26 -0400 Subject: Re: [PATCH 0/2]: Remote softirq invocation infrastructure. From: Daniel Walker To: David Miller Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, jens.axboe@oracle.com, steffen.klassert@secunet.com In-Reply-To: <20080919.234824.223177211.davem@davemloft.net> References: <20080919.234824.223177211.davem@davemloft.net> Content-Type: text/plain Date: Sat, 20 Sep 2008 08:29:21 -0700 Message-Id: <1221924561.1343.121.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 (2.22.3.1-1.fc9) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2008-09-19 at 23:48 -0700, David Miller wrote: > Jens Axboe has written some hacks for the block layer that allow > queueing softirq work to remote cpus. In the context of the block > layer he used this facility to trigger the softirq block I/O > completion on the same cpu where the I/O was submitted. > > Jen's, as stated, has block layer uses for this. I intend to use this > for receive side flow seperation on non-multiqueue network cards. And > Steffen Klassert has a set of IPSEC parallelization changes that can > very likely make use of this. What's the benefit that you (or Jens) sees from migrating softirqs from specific cpu's to others? Daniel