From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x233.google.com (mail-pf0-x233.google.com [IPv6:2607:f8b0:400e:c00::233]) (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 6E6D23B25E; Tue, 3 May 2016 13:55:01 -0400 (EDT) Received: by mail-pf0-x233.google.com with SMTP id y69so13379897pfb.1; Tue, 03 May 2016 10:55:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:subject:from:to:cc:date:in-reply-to:references :mime-version:content-transfer-encoding; bh=PKWP9As0iY56UzaOGW+95PbRwJYwpRmLqW7B/x3Acsg=; b=p+c/JDmaDS14DdV7lVmYTWmN68/tttsdTkdZIEA+ZtBbeOmEVDCPIVT5BFQGFOowiv IKhszVaY9Dym0EgFoivqkGohoJ3nWtOtPcYQcqeyuYZJhrHTmeYa1JfwbGRA44iDb8C5 rchrgCTL+Mdae53bDc4wgnG7WTyKjWZId4xc4t+enuKPdZU4bTjyKOX5DRROuc3mmWJH lIhPTRUAWVrNLiWLQrjf5eKBTfKaXw5SnSBUm7kUy3BSrCibdV+jwlt3Smq/fOds4owv d+kUPvY38Lbj/zaYIkm9crxV15UBRCbbly1s9HrDDuSCKyD12qRbOEhI5jpa1XqOaCmc AgEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=PKWP9As0iY56UzaOGW+95PbRwJYwpRmLqW7B/x3Acsg=; b=RtIrzkOGZ98+FxDIVfOiVhwjmRCZHr0ribfe5qEp9r28EKL/2ilYKmg7qSBWsEYLby PS7zedOZqnhfD1bV2apr5mvjg9PynwQoLuDPfSDtL61dlbO0/XDKBnJJEiYAcjEtR9vT NqZaixRC2eroj/kerPbkteVcVnauivSffcIcVqPgdoLf5KAWhu0zBh9W4T9z18xVTY3x 8ZyvHV7MdCY3dyXK2S4yQtdISLsbPbmwfgEpMRVgULfoWshyBUtOl/OC8eqWeMhZlff3 ClnfFskv/20yCHWwNi7S1r4xi18mbb0IpudzPRtVL8MhSwjDCQliOCcGory8eFzhM32C eQNA== X-Gm-Message-State: AOPr4FUuoU2xPmMRm8wSBOap0opLpfB4cng6nxG3TlBJ0oKKCS8Qn5XDkLS5CkLOj1waSQ== X-Received: by 10.98.32.13 with SMTP id g13mr5481876pfg.130.1462298100677; Tue, 03 May 2016 10:55:00 -0700 (PDT) Received: from ?IPv6:2620:0:1000:1704:dcb4:e90b:8939:ff97? ([2620:0:1000:1704:dcb4:e90b:8939:ff97]) by smtp.googlemail.com with ESMTPSA id w187sm388809pfw.50.2016.05.03.10.54.59 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 03 May 2016 10:54:59 -0700 (PDT) Message-ID: <1462298099.5535.315.camel@edumazet-glaptop3.roam.corp.google.com> From: Eric Dumazet To: Dave Taht Cc: "Agarwal, Anil" , Jonathan Morton , "make-wifi-fast@lists.bufferbloat.net" , "codel@lists.bufferbloat.net" , ath10k Date: Tue, 03 May 2016 10:54:59 -0700 In-Reply-To: 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> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit 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 17:55:01 -0000 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. > 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/?id=9d18562a227874289fda8ca5d117d8f503f1dcca