Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754832AbYGXJg5 (ORCPT ); Thu, 24 Jul 2008 05:36:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751636AbYGXJgr (ORCPT ); Thu, 24 Jul 2008 05:36:47 -0400 Received: from courier.cs.helsinki.fi ([128.214.9.1]:49881 "EHLO mail.cs.helsinki.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751492AbYGXJgq (ORCPT ); Thu, 24 Jul 2008 05:36:46 -0400 Date: Thu, 24 Jul 2008 12:36:44 +0300 (EEST) From: "=?ISO-8859-1?Q?Ilpo_J=E4rvinen?=" X-X-Sender: ijjarvin@wrl-59.cs.helsinki.fi To: Herbert Xu cc: Ingo Molnar , w@1wt.eu, davem@davemloft.net, davidn@davidnewall.com, torvalds@linux-foundation.org, akpm@linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stefanr@s5r6.in-berlin.de, rjw@sisk.pl, ilpo.jarvinen@helsinki.fi Subject: Re: [TCP bug, regression] stuck distcc connections in latest -git In-Reply-To: Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1664 Lines: 32 On Thu, 24 Jul 2008, Herbert Xu wrote: > Ingo Molnar wrote: > > > > the client (running 2.6.24) does periodic 120 seconds retransmits: > > > > 07:40:48.255452 IP dione.39201 > phoenix.distcc: . 1608:2144(536) ack 1 win 584007:40:48.255547 IP phoenix.distcc > dione.39201: . ack 2144 win 65535 > > 07:40:48.255564 IP dione.39201 > phoenix.distcc: . 67143:67679(536) ack 1 win 5840 > > 07:40:48.255648 IP phoenix.distcc > dione.39201: . ack 2144 win 65535 > > 07:42:48.255440 IP dione.39201 > phoenix.distcc: . 2144:2680(536) ack 1 win 5840 > > 07:42:48.255559 IP phoenix.distcc > dione.39201: . ack 2680 win 65535 > > 07:42:48.255570 IP dione.39201 > phoenix.distcc: . 67679:68215(536) ack 1 win 5840 > > 07:42:48.255659 IP phoenix.distcc > dione.39201: . ack 2680 win 65535 > > 07:44:48.255436 IP dione.39201 > phoenix.distcc: . 2680:3216(536) ack 1 win 584007:44:48.255570 IP phoenix.distcc > dione.39201: . ack 3216 win 65535 > > 07:44:48.255585 IP dione.39201 > phoenix.distcc: . 68215:68751(536) ack 1 win 5840 > > 07:44:48.255669 IP phoenix.distcc > dione.39201: . ack 3216 win 65535 > > OK, something's seriously screwed up on dione's kernel. Could > you please disable syncookies (which should enable SACK for you) > and see if the problem goes away? This looks like the FRTO bugs we fixed in 2.6.25.7, afaik, 2.6.24.y wasn't anymore updated at that time so it's a bit obsolete... -- i. -- 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/