Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760754AbYBCQIk (ORCPT ); Sun, 3 Feb 2008 11:08:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755085AbYBCQIc (ORCPT ); Sun, 3 Feb 2008 11:08:32 -0500 Received: from wa-out-1112.google.com ([209.85.146.180]:34537 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754377AbYBCQIa (ORCPT ); Sun, 3 Feb 2008 11:08:30 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=c63PmaorzRnlBN+cQi7aQOKQe0h33lxzGWjh39QN1emfbaJ1Jb7w+uF+nLXGqodlU06SXqGDsG4kM20cDHqDemsZukTUxJSm/XO2Zqt/MeJGcHuI/+U8nraUOBWF5qO3LuWnOkOjJwX2WRprUT+GhCQTRHWeDozT23AG/y8RS+8= Message-ID: Date: Mon, 4 Feb 2008 00:08:28 +0800 From: "Jeff Chua" To: "Jozsef Kadlecsik" Subject: Re: cups slow on linux-2.6.24 Cc: "Patrick McHardy" , lkml , "Krzysztof Piotr Oledzki" , "David S. Miller" , cups-bugs , "Netfilter Development Mailinglist" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <47A13573.7090804@trash.net> <47A13FBD.8050803@trash.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1651 Lines: 46 On Feb 2, 2008 10:44 PM, Jozsef Kadlecsik wrote: > Could I ask you to make two another tests? (I have been unable to > reproduce the bug so far, but it must be my fault.) You need to send more than 510 jobs to see the problem. > In both cases enable loggin invalid messages as Patrick wrote in a previous mail: > # modprobe ipt_LOG > # echo 255 >/proc/sys/net/netfilter/nf_conntrack_log_invalid Ok. > In the first case run the unpatched 2.4.24 kernel and before doing > any printing, start dumping all the traffic at the 515 port so that we > won't miss any connection and send the dump file: > # tcpdump -i lo -s 0 -w dump.pcap tcp port 515 Attached are the file dump1.bad, and dmesg.bad. The console only starts printing out the "nf_ct_tcp: invalid packed ignored" messages after the 22 seconds "pause". Look for pause at "23:40:27.454677", and resume at "23:40:59.469704". The first console message at "23:40:59". > In the second case run the patched kernel and just start printing: do you > get any 'nf_ct_tcp: invalid SYN' kernel message? No such message. Even after trying many times. But there's still a 26 "pause" from "23:49:41.368812" to "23:50:07.392278". It's able to resume and continue printing in "burst". These tests were ran with just 520 jobs using: for((i=1; i<520;i++)); do echo $i | lpr -Plp; done Sorry for the delay. Traveling. Thanks, Jeff. -- 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/