From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267453AbUHRSbp (ORCPT ); Wed, 18 Aug 2004 14:31:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267457AbUHRSah (ORCPT ); Wed, 18 Aug 2004 14:30:37 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:56228 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S267453AbUHRS3u (ORCPT ); Wed, 18 Aug 2004 14:29:50 -0400 Subject: Re: voluntary-preempt-2.6.8.1-P1 seems to lose UDP messages. From: Lee Revell To: pierre-olivier.gaillard@fr.thalesgroup.com Cc: linux-kernel In-Reply-To: <41233923.80202@fr.thalesgroup.com> References: <41233923.80202@fr.thalesgroup.com> Content-Type: text/plain Message-Id: <1092853574.8432.29.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Wed, 18 Aug 2004 14:31:01 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2004-08-18 at 07:10, P.O. Gaillard wrote: > Hello, > > I have a real-time application that transmits 20 MBytes/s over UDP/Gigabit > Ethernet between 2 PCs. > But when I use the voluntary-preemt-2.6.8.1-P1 patch on the receiving PC, the > app starts complaining about lost messages. It sounds like you need to set the network card irq to be non-threaded. What is the output of: root@mindpipe:/home/rlrevell/kernel-source/linux-2.6.8.1-P3# find /proc/irq/ -name threaded -print -a -exec cat {} \; /proc/irq/15/ide1/threaded 1 /proc/irq/14/ide0/threaded 1 /proc/irq/12/uhci_hcd/threaded 1 /proc/irq/11/eth0/threaded 1 /proc/irq/11/uhci_hcd/threaded 1 /proc/irq/10/EMU10K1/threaded 0 /proc/irq/10/uhci_hcd/threaded 1 /proc/irq/8/rtc/threaded 0 /proc/irq/1/i8042/threaded 1 You probably want all of these to be 1 except ethX. Lee