From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick McHardy Subject: Re: cups slow on linux-2.6.24 Date: Thu, 31 Jan 2008 03:41:55 +0100 Message-ID: <47A13573.7090804@trash.net> References: <47A07FEA.3000702@trash.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Cc: Jozsef Kadlecsik , lkml , Krzysztof Piotr Oledzki , "David S. Miller" , cups-bugs , Netfilter Development Mailinglist To: Jeff Chua Return-path: Received: from stinky.trash.net ([213.144.137.162]:35438 "EHLO stinky.trash.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753984AbYAaCmd (ORCPT ); Wed, 30 Jan 2008 21:42:33 -0500 In-Reply-To: Sender: netfilter-devel-owner@vger.kernel.org List-ID: Jeff Chua wrote: > On Jan 31, 2008 10:23 AM, Jeff Chua wrote: > > >> Again, using latest linux, one with >> 17311393f969090ab060540bd9dbe7dc885a76d5 reverted, and the other >> without. >> > > Sorry, here's the attached output files. Thanks. In the dump we can see that connections reusing ports always have their first SYN dropped and retransmissted three seconds later. I'm not sure whats causing this yet, do you have any firewall rules that affect loopback traffic? This filter (wireshark) shows one example of the problem in case someone else wants to have a look: (tcp.dstport == 1017 || tcp.srcport == 1017) && (tcp.flags == 0x02)