From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81D17C0044D for ; Tue, 17 Mar 2020 01:27:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6120D2051A for ; Tue, 17 Mar 2020 01:27:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733216AbgCQB1K (ORCPT ); Mon, 16 Mar 2020 21:27:10 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:50596 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733017AbgCQB1K (ORCPT ); Mon, 16 Mar 2020 21:27:10 -0400 Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id A7B60157A5E89; Mon, 16 Mar 2020 18:27:09 -0700 (PDT) Date: Mon, 16 Mar 2020 18:27:08 -0700 (PDT) Message-Id: <20200316.182708.2275968776439275159.davem@davemloft.net> To: yangpc@wangsu.com Cc: edumazet@google.com, ncardwell@google.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH RESEND net-next v2 0/5] tcp: fix stretch ACK bugs in congestion control modules From: David Miller In-Reply-To: <1584340511-9870-1-git-send-email-yangpc@wangsu.com> References: <1584340511-9870-1-git-send-email-yangpc@wangsu.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Mon, 16 Mar 2020 18:27:09 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pengcheng Yang Date: Mon, 16 Mar 2020 14:35:06 +0800 > "stretch ACKs" (caused by LRO, GRO, delayed ACKs or middleboxes) > can cause serious performance shortfalls in common congestion > control algorithms. Neal Cardwell submitted a series of patches > starting with commit e73ebb0881ea ("tcp: stretch ACK fixes prep") > to handle stretch ACKs and fixed stretch ACK bugs in Reno and > CUBIC congestion control algorithms. > > This patch series continues to fix bic, scalable, veno and yeah > congestion control algorithms to handle stretch ACKs. > > Changes in v2: > - Provide [PATCH 0/N] to describe the modifications of this patch series Series applied, thanks.