From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 0/2 net-next] tcp: do not use RTT from delayed ACKs for min-RTT Date: Fri, 19 Jan 2018 15:39:49 -0500 (EST) Message-ID: <20180119.153949.1637441627477895311.davem@davemloft.net> References: <20180117201101.14137-1-ycheng@google.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, edumazet@google.com, ncardwell@google.com, soheil@google.com To: ycheng@google.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:46784 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756284AbeASUjx (ORCPT ); Fri, 19 Jan 2018 15:39:53 -0500 In-Reply-To: <20180117201101.14137-1-ycheng@google.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Yuchung Cheng Date: Wed, 17 Jan 2018 12:10:59 -0800 > This patch set prevents TCP sender from using RTT samples from > (suspected) delayed ACKs as the minimum RTT, to avoid unbounded > over-estimation of the network path delay. This issue is common > when a connection has extended periods of one packet chit-chat > beyond the min RTT filter window. The first patch does that for TCP > general min RTT estimation. The second patch addresses specifically > the BBR congestion control's min RTT filter. Series applied, thank you.