From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Riepe Subject: Re: [PATCH 2.6.30-rc4] r8169: avoid losing MSI interrupts Date: Sat, 23 May 2009 17:01:36 +0200 Message-ID: <4A180FD0.5050101@googlemail.com> References: <200903041828.49972.m.bueker@berlin.de> <200905231124.28925.mb@bu3sch.de> <4A1809B0.3030109@googlemail.com> <200905231644.13326.mb@bu3sch.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: David Dillow , Francois Romieu , Rui Santos , =?ISO-8859-15?Q?Michael_B=FCker?= , linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: Michael Buesch Return-path: Received: from mail-fx0-f168.google.com ([209.85.220.168]:41692 "EHLO mail-fx0-f168.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753122AbZEWPBi (ORCPT ); Sat, 23 May 2009 11:01:38 -0400 In-Reply-To: <200905231644.13326.mb@bu3sch.de> Sender: netdev-owner@vger.kernel.org List-ID: Hi! Michael Buesch wrote: > On Saturday 23 May 2009 16:35:28 Michael Riepe wrote: > >>Hi! >> >>Michael Buesch wrote: >> >> >>>Thanks a lot, Dave! This fixes the issue on my chip. >> >>Yep, it's stable here as well. And even a little faster than pci=nomsi. >>The only strangeness I observed is that the throughput (measured with >>iperf and a single TCP connection) varies: >> >>[ ID] Interval Transfer Bandwidth >>[ 3] 0.0-10.0 sec 667 MBytes 559 Mbits/sec >>[ 3] 10.0-20.0 sec 803 MBytes 673 Mbits/sec >>[ 3] 20.0-30.0 sec 802 MBytes 673 Mbits/sec >>[ 3] 30.0-40.0 sec 714 MBytes 599 Mbits/sec >>[ 3] 40.0-50.0 sec 669 MBytes 561 Mbits/sec >>[ 3] 50.0-60.0 sec 791 MBytes 663 Mbits/sec >>[ 3] 0.0-60.0 sec 4.34 GBytes 622 Mbits/sec > > > Are you running the iperf server or client on the r8169? The client, since I wanted to measure write throughput. The server is a Lenovo Thinkpad T60 (e1000e driver). > I'm running the iperf server on the r8169 and get the following results: > > mb@homer:~$ iperf -c 192.168.2.50 -t120 -i10 In that case, the r8169 is receiving data (which never was a problem, at least for me - it only lost interrupts in TX mode). -- Michael "Tired" Riepe X-Tired: Each morning I get up I die a little