Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765048AbYAaD0h (ORCPT ); Wed, 30 Jan 2008 22:26:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756086AbYAaD03 (ORCPT ); Wed, 30 Jan 2008 22:26:29 -0500 Received: from stinky.trash.net ([213.144.137.162]:36159 "EHLO stinky.trash.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755303AbYAaD01 (ORCPT ); Wed, 30 Jan 2008 22:26:27 -0500 Message-ID: <47A13FBD.8050803@trash.net> Date: Thu, 31 Jan 2008 04:25:49 +0100 From: Patrick McHardy User-Agent: Mozilla-Thunderbird 2.0.0.6 (X11/20071009) MIME-Version: 1.0 To: Jeff Chua CC: Jozsef Kadlecsik , lkml , Krzysztof Piotr Oledzki , "David S. Miller" , cups-bugs , Netfilter Development Mailinglist Subject: Re: cups slow on linux-2.6.24 References: <47A07FEA.3000702@trash.net> <47A13573.7090804@trash.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1269 Lines: 41 Jeff Chua wrote: > On Jan 31, 2008 10:41 AM, Patrick McHardy wrote: > > >> 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? >> > > No firewall. > > And the "lp" is just to print to a file@localhost. > > # lpadmin -p lp -i /etc/cups/interfaces/lp -v lpd://localhost/file -o > printer-error-policy=retry-job > # lpadmin -p file -i /etc/cups/interfaces/file -v file:/dev/null -o > printer-error-policy=retry-job > > Filter for lp is .. > cat $6 > > Filter for file is ... > cat $6 >/tmp/$$ > Actually its probably the SYN/ACK that is dropped. Please try whether modprobe ipt_LOG echo 255 >/proc/sys/net/netfilter/nf_conntrack_log_invalid and then running the test again logs something to the ring buffer. You don't need to run the entire test, just until you get a log message from conntrack. -- 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/