Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 17 Sep 2002 17:50:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 17 Sep 2002 17:50:15 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:64776 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id ; Tue, 17 Sep 2002 17:50:14 -0400 Message-ID: <3D87A4A2.6050403@mandrakesoft.com> Date: Tue, 17 Sep 2002 17:54:42 -0400 From: Jeff Garzik Organization: MandrakeSoft User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "David S. Miller" CC: akpm@digeo.com, manfred@colorfullife.com, netdev@oss.sgi.com, linux-kernel@vger.kernel.org Subject: Re: Info: NAPI performance at "low" loads References: <3D879F59.6BDF9443@digeo.com> <20020917.142635.114214508.davem@redhat.com> <3D87A264.8D5F3AD2@digeo.com> <20020917.143947.07361352.davem@redhat.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 563 Lines: 20 David S. Miller wrote: > Any driver should be able to get the NAPI overhead to max out at > 2 PIOs per packet. Just to pick nits... my example went from 2 or 3 IOs [depending on the presence/absence of a work loop] to 6 IOs. Feel free to re-read my message and point out where an IO can be eliminated... Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/