From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] tcp: cwnd does not increase in TCP YeAH Date: Tue, 06 Sep 2016 13:58:46 -0700 (PDT) Message-ID: <20160906.135846.2108420188600081714.davem@davemloft.net> References: Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, nanditad@google.com, edumazet@google.com, ncardwell@google.com, ycheng@google.com To: agermanov@anchorfree.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:53988 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935484AbcIFU6s (ORCPT ); Tue, 6 Sep 2016 16:58:48 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: From: Artem Germanov Date: Sun, 4 Sep 2016 21:03:27 -0700 > Commit 76174004a0f19785a328f40388e87e982bbf69b9 > (tcp: do not slow start when cwnd equals ssthresh ) > introduced regression in TCP YeAH. Using 100ms delay 1% loss virtual > ethernet link kernel 4.2 shows bandwidth ~500KB/s for single TCP > connection and kernel 4.3 and above (including 4.8-rc4) shows > bandwidth ~100KB/s. > That is caused by stalled cwnd when cwnd equals ssthresh. This patch > fixes it by proper increasing cwnd in this case. > > Signed-off-by: Artem Germanov This patch won't apply properly. First, it isn't rooted properly. Second, all the TAB characters have been mangled into spaces. Please fix these problems, send a test patch to yourself, and only resubmit this patch when you can successfully apply that test patch. Thank you.