From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x22a.google.com (mail-oi0-x22a.google.com [IPv6:2607:f8b0:4003:c06::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 1C7D73B25E; Tue, 3 May 2016 14:11:36 -0400 (EDT) Received: by mail-oi0-x22a.google.com with SMTP id x19so36667818oix.2; Tue, 03 May 2016 11:11:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-transfer-encoding; bh=ZpoPUiB9GNk33fwYq8VoHXaOlnNTYWns7zfNuGU6O2I=; b=wiouKz5MyOkbHHpDkEhtN0EmKKdPng+Xnibq0ijw4lC0csHJXQklJgeAXzI57zGjRh O27aFnKMOKHwG4OhjW9ltGm1pWMXUQj0Y5lRebpDL6aN7Ci/Sep1OfJWkSp7T3itJiD4 laNplq1Z/T2pfy+yh0j9+UoAdY2scOoP6oLyil3QjjMsYPDG56S/JKw1NBVPp0h0Pmaj OMpLHbr4G2QNEwXQDfVY6101oJGa7PgwAXzi3n4dy74ZP78z+1BIUD/Y+7r+SbMTYfAY 2dFZjUN+FeM9cZ+x8Wa6dTcKVnRg5BiDMkQbbPIUL42G7kGLk5gAydg3k9e7oYkWZrK5 1Kaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-transfer-encoding; bh=ZpoPUiB9GNk33fwYq8VoHXaOlnNTYWns7zfNuGU6O2I=; b=l2XVO20jnzl1XXGd0GtvuuDqhLLMqRBkBEexWRSFTOepSHrWuYOZPxVxdfxr4VuRAD aG4zt6QZistfIP8LPVVUewUvYlxGFjbr7jn1rcs9u1Df1KnNc3eI5zwVBFeIaaFV2b0I K2fwfGDmES3zmk7NchuSJkIZHpo3pZZ2puLGGrIXzYIw52l0inWZx1/JRN/+w4GNV2kb 6x0xwa4ZFE2huDsO2Eit2kuIem7uzLmI77jN3tloJfzo3vJSjFAvuaSFcmN4uC9naH3h EEjdRKQYfbqryApqV6/xoZrV8vdjIFAS+n3T5OZEH8MtoAPdWZK/O8BNI4w/m+TFaZ/7 Lz4w== X-Gm-Message-State: AOPr4FUcjQ2t28xu+7FNn4n4rOXB697gL56kWuOMfd2ABn4I6fBLA+qT5p9cDYbo80q9xlPZIIEUR7wuyi/MRA== MIME-Version: 1.0 X-Received: by 10.157.4.174 with SMTP id 43mr1960287otm.127.1462299095586; Tue, 03 May 2016 11:11:35 -0700 (PDT) Received: by 10.202.78.23 with HTTP; Tue, 3 May 2016 11:11:35 -0700 (PDT) In-Reply-To: <1462298099.5535.315.camel@edumazet-glaptop3.roam.corp.google.com> References: <1462125592.5535.194.camel@edumazet-glaptop3.roam.corp.google.com> <865DA393-262D-40B6-A9D3-1B978CD5F6C6@gmail.com> <7A2801D5E40DD64A85E38DF22117852CD09A181F@wdc1exchmbxp01.hq.corp.viasat.com> <7A2801D5E40DD64A85E38DF22117852CD09A1873@wdc1exchmbxp01.hq.corp.viasat.com> <1462282531.5535.307.camel@edumazet-glaptop3.roam.corp.google.com> <1462298099.5535.315.camel@edumazet-glaptop3.roam.corp.google.com> Date: Tue, 3 May 2016 11:11:35 -0700 Message-ID: From: Dave Taht To: Eric Dumazet Cc: "Agarwal, Anil" , Jonathan Morton , "make-wifi-fast@lists.bufferbloat.net" , "codel@lists.bufferbloat.net" , ath10k Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Make-wifi-fast] [Codel] fq_codel_drop vs a udp flood X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 May 2016 18:11:36 -0000 On Tue, May 3, 2016 at 10:54 AM, Eric Dumazet wrot= e: > On Tue, 2016-05-03 at 10:37 -0700, Dave Taht wrote: >> Thus far this batch drop patch is testing out beautifully. Under a >> 900Mbit flood going into 100Mbit on the pcengines apu2, cpu usage for >> ksoftirqd now doesn't crack 10%, where before (under >> pie,pfifo,fq_codel,cake & the prior fq_codel) it went to 88% and >> ultimately bad things happened, like losing routability. >> >> I've had it running for hours and I hardly notice it's there. >> > > Excellent, thanks for testing it. Getting it up to 4 floods with 8k udp fragments each could take it up to about 20-30% of cpu. iperf3 -c 172.26.64.200 -u -P 4 -b200Mbit -t 600 & still, beyond awesome. > >> Performance for the normal cc controlled and/or sparse flows is >> unaffected, aside from the uncontrolled flows eating their percentage >> of the link. >> >> Nice work. Thx. This should go into -stable. >> >> https://patchwork.ozlabs.org/patch/617307/ >> >> Sigh. The RFC is past last call... > > It is merged : > > https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?i= d=3D9d18562a227874289fda8ca5d117d8f503f1dcca the ietf approval process is about 17512 hours longer than the netdev approval process. > > --=20 Dave T=C3=A4ht Let's go make home routers and wifi faster! With better software! http://blog.cerowrt.org