From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-bk0-x235.google.com (mail-bk0-x235.google.com [IPv6:2a00:1450:4008:c01::235]) (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 8DE9B21F1F7 for ; Sun, 8 Dec 2013 08:46:40 -0800 (PST) Received: by mail-bk0-f53.google.com with SMTP id na10so1008131bkb.26 for ; Sun, 08 Dec 2013 08:46:38 -0800 (PST) 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=qcnpa8zDDq2fEm7W5Fo8QgPmlom0IdqaNixAPAtYWds=; b=oGyEXbwTlmGimo0eszCwMkWcXcfAnP9dnpn0KfUMmSkjXEW7qByMopo25bWCJEiJIS yPlCgRf2YmPN/FsJFBjsZrII0eQ2vbAwFmF0vMjGOc8YcMX4TBY81cHZQwSXjWIAH/xT Y8WHLrd8OGLZLD83okkkYpHiaz2HIiVuNIaiD2JOj8BiT6JD2kCbNdKXzxw3OMvtUnXP hA7WMXP3PmTlURFfCfduqf8sDxxAGXVl2b/zbOcAMUGCCo5lnQ6rcV/v0RffLqtDnaPC bbQzNsf2nEyAmt25xPXwd16SIqRhW/P0jUMf0jOi59zdRnfziEJiw4GXRVYnqG0uJftl sukw== X-Received: by 10.204.54.136 with SMTP id q8mr960264bkg.100.1386521198408; Sun, 08 Dec 2013 08:46:38 -0800 (PST) Received: from bass.home.chromatix.fi (37-136-100-238.nat.bb.dnainternet.fi. [37.136.100.238]) by mx.google.com with ESMTPSA id l5sm5798676bko.7.2013.12.08.08.46.30 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 08 Dec 2013 08:46:38 -0800 (PST) Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii From: Jonathan Morton In-Reply-To: <878uvvcwqh.wl%jch@pps.univ-paris-diderot.fr> Date: Sun, 8 Dec 2013 18:46:24 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <99FAC930-388C-4903-AF28-02E4882D4FE6@gmail.com> References: <20131203222559.GV8066@einstein.kenyonralph.com> <7ieh5pew2d.wl%jch@pps.univ-paris-diderot.fr> <87haakx1ev.wl%jch@pps.univ-paris-diderot.fr> <20131208012751.GA6382@sesse.net> <878uvvcwqh.wl%jch@pps.univ-paris-diderot.fr> To: Juliusz Chroboczek X-Mailer: Apple Mail (2.1085) Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] curious..... X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Dec 2013 16:46:41 -0000 On 8 Dec, 2013, at 3:12 pm, Juliusz Chroboczek wrote: > (2) making fq_codel do something fast at high data rates At those sorts of data rates, the "usual" condition will be that the = queue is empty *and* the output interface can immediately accept a = packet. With both of those conditions satisfied, I would assume that = fq_codel can be bypassed with extremely little overhead. - Jonathan Morton