From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: [Bugme-new] [Bug 14737] New: e1000e driver experiences large packet losses Date: Mon, 07 Dec 2009 23:59:05 +0100 Message-ID: <4B1D88B9.7020302@gmail.com> References: <20091207131900.19c776ed.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "xenoterracide@gmail.com" , "Kirsher, Jeffrey T" , "Allan, Bruce W" , "Waskiewicz Jr, Peter P" , "Ronciak, John" , "bugzilla-daemon@bugzilla.kernel.org" , "bugme-daemon@bugzilla.kernel.org" , Andrew Morton , "netdev@vger.kernel.org" To: "Brandeburg, Jesse" Return-path: Received: from mail-bw0-f227.google.com ([209.85.218.227]:65461 "EHLO mail-bw0-f227.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935639AbZLGW7f (ORCPT ); Mon, 7 Dec 2009 17:59:35 -0500 Received: by bwz27 with SMTP id 27so3985200bwz.21 for ; Mon, 07 Dec 2009 14:59:41 -0800 (PST) In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: Brandeburg, Jesse wrote, On 12/07/2009 10:53 PM: > There is nothing in the ethtool -S statistics that I see that indicates > anything is wrong, you've gotten no tx timeouts as far as I can tell, have > you had any system panics (possibly seeming unrelated to network?) There are unreplied icmp echos and a lot of tcp retransmits in the first one (netstat_after.slave4.log.gz): Ip: 812 total packets received 1 with invalid addresses 0 forwarded 0 incoming packets discarded 802 incoming packets delivered 1048 requests sent out Icmp: 488 ICMP messages received 0 input ICMP message failed. ICMP input histogram: destination unreachable: 2 timeout in transit: 289 echo replies: 197 677 ICMP messages sent 0 ICMP messages failed ICMP output histogram: destination unreachable: 2 IcmpMsg: InType0: 197 InType3: 2 InType11: 289 OutType3: 2 OutType69: 675 Tcp: 17 active connections openings 0 passive connection openings 14 failed connection attempts 0 connection resets received 0 connections established 45 segments received 49 segments send out 19 segments retransmited 0 bad segments received. 19 resets sent I analyzed tcpdumps from the router and there were really skipped icmp echo requests on input. At the same time nothing wrong in the stats (qdisc, ifconfig, ethtool) of this sending box with e1000e, and the router's ifconfig (I only didn't see router's netstat). Anyway, I doubt it's accidental or router to blame if another NIC, and this e1000e with some boots/kernels(?) can work flawlessly. Btw, after finding this similarly mysterious story below (with the same NIC) I wonder if the router model can matter here too, but maybe I'm wrong. http://bugzilla.kernel.org/show_bug.cgi?id=11998 Jarek P. > On Mon, 7 Dec 2009, Andrew Morton wrote: >> (switched to email. Please respond via emailed reply-to-all, not via the >> bugzilla web interface). >> >> On Sat, 5 Dec 2009 07:02:49 GMT >> bugzilla-daemon@bugzilla.kernel.org wrote: >> >>> http://bugzilla.kernel.org/show_bug.cgi?id=14737 >>> >>> Summary: e1000e driver experiences large packet losses >>> Product: Drivers