From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 24 May 2001 19:08:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 24 May 2001 19:07:57 -0400 Received: from pizda.ninka.net ([216.101.162.242]:1673 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Thu, 24 May 2001 19:07:47 -0400 From: "David S. Miller" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15117.37952.537252.892498@pizda.ninka.net> Date: Thu, 24 May 2001 16:07:44 -0700 (PDT) To: Bharath Madhavan Cc: "'linux-kernel@vger.kernel.org'" Subject: RE: Accelerated TCP/IP support from kernel In-Reply-To: <25369470B6F0D41194820002B328BDD20717A0@ATLOPS> In-Reply-To: <25369470B6F0D41194820002B328BDD20717A0@ATLOPS> X-Mailer: VM 6.75 under 21.1 (patch 13) "Crater Lake" XEmacs Lucid Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Bharath Madhavan writes: > I guess 3c905c NIC supports HW checksumming. Is this true? Yes. > In this case, do we have any benchmarking for this card > with and without ZERO_COPY (and HW checksumming). I am eager to > know by how many times did the system throughput increase? It doesn't matter with 100baseT cards, they are slow enough that even with the cpu doing the data copies the link may be easily saturated. What you will get is decreased CPU utilization. You need to go to gigabit or faster link speeds to see any real throughput improvement. Later, David S. Miller davem@redhat.com