From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-x22d.google.com (mail-lb0-x22d.google.com [IPv6:2a00:1450:4010:c04::22d]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id B5FD721F407; Sat, 30 Aug 2014 13:48:02 -0700 (PDT) Received: by mail-lb0-f173.google.com with SMTP id c11so4165314lbj.4 for ; Sat, 30 Aug 2014 13:48:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=fQ7Ix1UC6HL3UmzhQ2o7O39LfVpmbFhx5kx9DTyGXHc=; b=I59Pjj76bhNdVGhqU1qROdtfrUgDtcQY6yeBpRCFGvxOR+YItyHvFqofU4DjitVoeI x2EjGBXl2hGOZGLVvNfkkQvMcaoBvOTfmC4FulK0OGpceE3jA2CcJtvLnLaKjkerpKZU w+iJWn+lZvDGORKNQBqfq5RmLJnJPgEGrrk+gANPGtYFUIt1uagG7+c3UzPjbFEYPSid u6S/x2ZKqppzlshx5+3xp++ZwVAFdHWbMCnKjjFZG6sOYS5vu/aBGnW5zm6CRMwkbfRZ TYAVpZkTjQiSET3NtUHffmFLXfjq10nhHGKXOV8GpkQuXY073BCCRfd58PV1cdelnkpi tdJQ== X-Received: by 10.112.14.33 with SMTP id m1mr18226813lbc.16.1409431680199; Sat, 30 Aug 2014 13:48:00 -0700 (PDT) Received: from bass.home.chromatix.fi (188-67-224-93.bb.dnainternet.fi. [188.67.224.93]) by mx.google.com with ESMTPSA id r4sm2406133lag.6.2014.08.30.13.47.58 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 30 Aug 2014 13:47:59 -0700 (PDT) Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii From: Jonathan Morton In-Reply-To: <4FF4917C-1B6D-4D5F-81B6-5FC177F12BFC@gmail.com> Date: Sat, 30 Aug 2014 23:47:57 +0300 Content-Transfer-Encoding: quoted-printable Message-Id: <4DA71387-6720-4A2F-B462-2E1295604C21@gmail.com> References: <87ppfijfjc.fsf@toke.dk> <4FF4917C-1B6D-4D5F-81B6-5FC177F12BFC@gmail.com> To: cerowrt-devel X-Mailer: Apple Mail (2.1085) Cc: bloat Mainlinglist Subject: Re: [Cerowrt-devel] [Bloat] Comcast upped service levels -> WNDR3800 can't cope... X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 Aug 2014 20:48:03 -0000 On 30 Aug, 2014, at 8:33 pm, Jonathan Morton wrote: > I'll need to investigate more closely to see whether there's a CPU = load difference between HTB and TBF in practice. Replying to myself, but... The surprising result is that TBF seems to consume about TWICE the CPU = time, at the same bandwidth, as HTB does. Even FQ in flow-rate-limit = mode is roughly on par with HTB on that score. There is clearly = something very wrong with how TBF is doing it. HTB (running with only a default class) and FQ are both able to send and = regulate 200Mbps using about an eighth of a 1.5GHz PowerPC, all told. = It doesn't even seem to matter which qdisc I slap on top of HTB. TBF = needs almost a quarter of the same CPU to do the same thing. - Jonathan Morton