From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH -next] net: tcp: add mib counters to track zero window transitions Date: Mon, 24 Feb 2014 19:14:10 -0500 (EST) Message-ID: <20140224.191410.698948363517952588.davem@davemloft.net> References: <1392674268-26005-1-git-send-email-fw@strlen.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com To: fw@strlen.de Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:48569 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753201AbaBYAOM (ORCPT ); Mon, 24 Feb 2014 19:14:12 -0500 In-Reply-To: <1392674268-26005-1-git-send-email-fw@strlen.de> Sender: netdev-owner@vger.kernel.org List-ID: From: Florian Westphal Date: Mon, 17 Feb 2014 22:57:48 +0100 > Three counters are added: > - one to track when we went from non-zero to zero window > - one to track the reverse > - one counter incremented when we want to announce zero window. > > The latter is added because it can show cases where we want to close the > window but can't because we would shrink window. > > Suggested-by: Eric Dumazet > Signed-off-by: Florian Westphal > --- > Eric, is this what you had in mind? > > I re-ran my 'slow-sender-with-reader-that-does-not-drain-socket' > scenario and, as expected, only TCPWANTZEROWINDOW increases. What is happening with this patch? The discussion just died out.