From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Adams Subject: Re: r8169 performance? Date: Tue, 6 Dec 2011 22:19:19 -0600 Message-ID: <20111207041919.GE3937@hiwaay.net> References: <20111204211007.GA32098@hiwaay.net> <20111204234004.GA32515@electric-eye.fr.zoreil.com> <20111205004650.GA5948@hiwaay.net> <20111205064403.GA3426@electric-eye.fr.zoreil.com> <20111205145454.GA26078@hiwaay.net> <20111206082247.GA29089@electric-eye.fr.zoreil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, hayeswang To: Francois Romieu Return-path: Received: from fly.hiwaay.net ([216.180.54.1]:42256 "EHLO fly.hiwaay.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753289Ab1LGETZ (ORCPT ); Tue, 6 Dec 2011 23:19:25 -0500 Content-Disposition: inline In-Reply-To: <20111206082247.GA29089@electric-eye.fr.zoreil.com> Sender: netdev-owner@vger.kernel.org List-ID: Once upon a time, Francois Romieu said: > It will disappear once http://marc.info/?l=linux-netdev&m=132306718323579 > is applied. You may apply http://marc.info/?l=linux-netdev&m=132306715823570 > too but I doubt it will make much difference for you. I'll give it a try to double-check (it'll probably be a few days before I can get to it). > > Also, they load different firmware (so I guess my problem could be firmware > > related, which I guess only RealTek could find/fix). > > > > I guess my question is this: is there a chance this can be solved with > > driver changes, or should I just accept that the on-board NIC has poor > > performance and install an add-in NIC? > > (I understand that the systems (CPU, bus...) are not necessary the same.) > > Did you check if Tx checksumming is enabled ? > > It could make a noticeable difference. That is off on both of my r8169 systems. Enabling it on the "good" system killed networking (even my existing SSH session was hung) until I re-disabled it. Enabling it on the "problem" system didn't appear to make any significant difference. The otherwise "good" system is running an older kernel (Fedora 14, 2.6.35.14); maybe some changes have been made so that "tx on" works on a newer driver? Or maybe the slightly different chip revision is the difference. -- Chris Adams Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.