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=-10.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 29FB2C433DF for ; Wed, 1 Jul 2020 23:02:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05ABC207E8 for ; Wed, 1 Jul 2020 23:02:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kdrag0n.dev header.i=@kdrag0n.dev header.b="BOfrmMmC"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="kXcmCArL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726676AbgGAXCt (ORCPT ); Wed, 1 Jul 2020 19:02:49 -0400 Received: from wout3-smtp.messagingengine.com ([64.147.123.19]:36619 "EHLO wout3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726213AbgGAXCt (ORCPT ); Wed, 1 Jul 2020 19:02:49 -0400 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.west.internal (Postfix) with ESMTP id EBDC17F2; Wed, 1 Jul 2020 19:02:47 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute1.internal (MEProxy); Wed, 01 Jul 2020 19:02:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kdrag0n.dev; h= from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; s=fm1; bh=1YAscWT5Mz6u+VNH7WtgDonrRp slfYO5bYDazpLN3U8=; b=BOfrmMmC/i27YrdqadTyWQ29h3hFFoPqQxIPzoaOZT t/z9TYlLOKq5dAkCsYA/mApCKR4iSmhgcWjvs4BXrc9tzlH2n7L0leJ5GhGmc7di PtQYWhvDlbgtj0v+wnY4nz0xD598DzSOcgoSw3uoVJTvggsYKKqm9xS1khq1kr8s H1NYdZpYcUZTdaQRMDlf3el9nhkH5QqLo+ITbdZXBt4l8sGxCZ+XP3AhgQzdqTLi g1CdgSv5WxnPk3d7fLFybRf5x2ocZYZ0fzUFZSoYE7LMEpbWgHsbgLtJ4WNQT3nO xylzQWNsrY0xR7YLMt7x2kktca7zJRfV6AY1d7/DfZCA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :message-id:mime-version:subject:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=1YAscWT5Mz6u+VNH7 WtgDonrRpslfYO5bYDazpLN3U8=; b=kXcmCArL1NphLT0/LvDuxgrtSv/gcpg3q mKrEdfSjf/1ytbnxXxYQEg0bQZ9vLFVpap48pVxSdeTrfoMd2AVmPSfzSNnsjBkZ mKz6LTLujS76kDsYY7XuPz2W6LcrzzL+RE9iy8rVhODiI13JkNtzT9sQK1OuSk8J p1qYC7x9WohwzQQ7MafshTLomlcz4DFHHZ14K8673fkFGMYssoMLPYY3CB2ml4Ci nuTCtTfZ5cGY4cd9ulRvSPJfp1xXtBJTPzfTepCC5o6jm469szt5nhWjGk4PNt3z oeuul1G+Xxxlp8EK8AlYEInp31a9oIlDbCnPZGQSeDdgYGpv63+eQ== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduiedrtdefgdduiecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgggfestdekredtredttdenucfhrhhomhepffgrnhhnhicunfhi nhcuoegurghnnhihsehkughrrghgtdhnrdguvghvqeenucggtffrrghtthgvrhhnpefhie fhgfelgfdufedvudelvdefvdefgfeiueeufeegteffudekgefhvedtieefteenucfkphep udegledrvdegkedrfeekrdduudenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmh epmhgrihhlfhhrohhmpegurghnnhihsehkughrrghgtdhnrdguvghv X-ME-Proxy: Received: from pinwheel.localdomain (vsrv_sea01.kdrag0n.dev [149.248.38.11]) by mail.messagingengine.com (Postfix) with ESMTPA id 2DF7A328005A; Wed, 1 Jul 2020 19:02:46 -0400 (EDT) From: Danny Lin To: Jamal Hadi Salim , Cong Wang , Jiri Pirko Cc: "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Danny Lin Subject: [PATCH] net: sched: Allow changing default qdisc to FQ-PIE Date: Wed, 1 Jul 2020 16:01:52 -0700 Message-Id: <20200701230152.445957-1-danny@kdrag0n.dev> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Similar to fq_codel and the other qdiscs that can set as default, fq_pie is also suitable for general use without explicit configuration, which makes it a valid choice for this. This is useful in situations where a painless out-of-the-box solution for reducing bufferbloat is desired but fq_codel is not necessarily the best choice. For example, fq_pie can be better for DASH streaming, but there could be more cases where it's the better choice of the two simple AQMs available in the kernel. Signed-off-by: Danny Lin --- net/sched/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/sched/Kconfig b/net/sched/Kconfig index 84badf00647e..a3b37d88800e 100644 --- a/net/sched/Kconfig +++ b/net/sched/Kconfig @@ -468,6 +468,9 @@ choice config DEFAULT_FQ_CODEL bool "Fair Queue Controlled Delay" if NET_SCH_FQ_CODEL + config DEFAULT_FQ_PIE + bool "Flow Queue Proportional Integral controller Enhanced" if NET_SCH_FQ_PIE + config DEFAULT_SFQ bool "Stochastic Fair Queue" if NET_SCH_SFQ @@ -480,6 +483,7 @@ config DEFAULT_NET_SCH default "pfifo_fast" if DEFAULT_PFIFO_FAST default "fq" if DEFAULT_FQ default "fq_codel" if DEFAULT_FQ_CODEL + default "fq_pie" if DEFAULT_FQ_PIE default "sfq" if DEFAULT_SFQ default "pfifo_fast" endif -- 2.27.0