From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 10/33] sfc: Add option to use a separate channel for TX completions Date: Fri, 12 Dec 2008 21:36:36 -0800 (PST) Message-ID: <20081212.213636.82919395.davem@davemloft.net> References: <20081212125216.GJ10372@solarflare.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-net-drivers@solarflare.com To: bhutchings@solarflare.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:36648 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754521AbYLMFgf (ORCPT ); Sat, 13 Dec 2008 00:36:35 -0500 In-Reply-To: <20081212125216.GJ10372@solarflare.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Ben Hutchings Date: Fri, 12 Dec 2008 12:52:16 +0000 > From: Neil Turton > > In a bidirectional forwarding test, we find that the best performance > is achieved by sending the TX completion interrupts from one NIC to a > CPU which shares an L2 cache with RX completion interrupts from the > other NIC. To facilitate this, add an option (through a module > parameter) to create separate channels for RX and TX completion with > separate IRQs when MSI-X is available. > > Signed-off-by: Ben Hutchings Applied.