From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Lameter Subject: Re: UDP multicast packet loss not reported if TX ring overrun? Date: Tue, 25 Aug 2009 11:35:54 -0400 (EDT) Message-ID: References: <4A89C026.4030402@us.ibm.com> <1250545839.25939.21.camel@w-sridhar.beaverton.ibm.com> <1250549034.25939.30.camel@w-sridhar.beaverton.ibm.com> <1250554332.25939.46.camel@w-sridhar.beaverton.ibm.com> <4A930DEF.5000008@gmail.com> <4A93EB9B.5020600@gmail.com> <4A9403F0.2060301@gmail.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Sridhar Samudrala , Nivedita Singhvi , netdev@vger.kernel.org, "David S. Miller" To: Eric Dumazet Return-path: Received: from smtp4.ultrahosting.com ([74.213.175.253]:47595 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754708AbZHYPf5 (ORCPT ); Tue, 25 Aug 2009 11:35:57 -0400 Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id DA32F82C689 for ; Tue, 25 Aug 2009 11:36:51 -0400 (EDT) Received: from smtp.ultrahosting.com ([74.213.175.253]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fDP+KFRN1XFB for ; Tue, 25 Aug 2009 11:36:47 -0400 (EDT) Received: from gentwo.org (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id 3D2A782C6DD for ; Tue, 25 Aug 2009 11:36:47 -0400 (EDT) In-Reply-To: <4A9403F0.2060301@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 25 Aug 2009, Eric Dumazet wrote: > Christoph Lameter a ?crit : > > On Tue, 25 Aug 2009, Eric Dumazet wrote: > > > >> Please hold on, I would like to fully understand what's happening, > >> and test the patch :) > > > > Ok. It would be good if the drops would also be somehow noted by the UDP > > subsystem (one should see something with netstat -su) and may be even the > > socket. I see a drops column in /proc/net/udp. rx_drops, tx_drops? > > This /proc/net/udp column is for rx_drops currently and was recently added... So lets rename it to rx_drops and then add tx_drops?