From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-x235.google.com (mail-wr0-x235.google.com [IPv6:2a00:1450:400c:c0c::235]) (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 649873B2A4 for ; Mon, 27 Nov 2017 07:47:54 -0500 (EST) Received: by mail-wr0-x235.google.com with SMTP id y42so26274290wrd.3 for ; Mon, 27 Nov 2017 04:47:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc:message-id:references :to; bh=chwvTnUK6WpXDBZxMEdnX6l6WhS5fYisSNc/wOtH1To=; b=ZirquuHu77ba/NkxiCQjwh1GF9b0zx8po4dtltGX50p5d9sJpsNhP2xVL0wru79bB5 kEez8wD1e04ecjUmSNMUMlbqFQ0OprfG1jhMrjphUNeAEQpeo4It0Lj+BnPDcbQmw9m6 RK5M5pJnjlz2yHcIwUYER4fqe97CdppnqCoDowvouCa3/C9ZyRrblsGKo5vDwl3YuP93 elanGDyMwV0ovKskL+iH2qV/q+e4JVxY8ViLJOJ0goc7tHYVGyQcBbeX2+CFLvm7wGIo MeI0mxx+0fSGwQvJ/m3isTv8fSwK3aC5p70KYv4JJBnsBc+a0ibxohCCJVB8gK/SLiOC RiDA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=chwvTnUK6WpXDBZxMEdnX6l6WhS5fYisSNc/wOtH1To=; b=rW41mwFTZnbDRCZk50booQI6B04FvIqrQ5EaazLHHfrfCuclCO4sZRY+w72qDzaknX VxbPzfuDLLwbzFDCeih11yrf4EMNafyLNR2LOvZfbNPnvxhVT1dUgpqBgi+RXadfPRPs kvoEvh8jVsE444FUXnOmUWrDQ1dB9U/J/55l+Hjihf8Dbv4O9lWl+SDC9W+Jnwm56/+Y yKnqL3x81SLV9XDFFkt5jawqDWS/dGPfmnCSPr3UiCbORpiHREcP9l0X0oU5Hvtf7x2y L+KrQm9Vf+pyRsClK6+9s2uOUcXn+UaHUhB8MA3bpteDU6AvtMwZImSTbY4G6NJDcZ63 9clw== X-Gm-Message-State: AJaThX5Ijgl2TG71GNpsCHTQ82seE9TvqKG/FgrFm5Ovr9GoAplWr0t3 kpthOpdQdrPdTHf6ZWyH1/4= X-Google-Smtp-Source: AGs4zMY4MNu5xR4zubkeiUcqxA04BoneB1t6IiF9abI4Txnzv0EKTlmGOwIFJE9Wc7+I8hmKqmkmew== X-Received: by 10.223.138.182 with SMTP id y51mr25276592wry.273.1511786873030; Mon, 27 Nov 2017 04:47:53 -0800 (PST) Received: from [10.72.0.130] (h-1169.lbcfree.net. [185.99.119.68]) by smtp.gmail.com with ESMTPSA id u46sm23297438wrc.26.2017.11.27.04.47.51 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 27 Nov 2017 04:47:52 -0800 (PST) Content-Type: multipart/alternative; boundary="Apple-Mail=_04A8D803-E44F-426D-B452-B5241DA7A269" Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) From: Pete Heist In-Reply-To: Date: Mon, 27 Nov 2017 13:47:53 +0100 Cc: Dave Taht , Cake List Message-Id: <53AFD81B-F9F5-4DE1-A418-A177D0F339E8@gmail.com> References: <7B914FA7-38A6-4113-9B2C-D6246873676A@gmail.com> <1493791193941.83458@telenor.com> To: Jonathan Morton X-Mailer: Apple Mail (2.3124) Subject: Re: [Cake] Recomended HW to run cake and fq_codel? X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Nov 2017 12:47:54 -0000 --Apple-Mail=_04A8D803-E44F-426D-B452-B5241DA7A269 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Nov 27, 2017, at 1:04 PM, Jonathan Morton = wrote: > My pet suggestion here is to represent latency as its inverse, = "responsiveness" with units of Hz. This has the dual advantages of = bigger numbers being better, and the figures being directly comparable = with framerates. >=20 > As you say, the methodology will need to be very carefully specified, = so that we get a meaningful measurement that's hard to game. >=20 I like that idea... Then it=E2=80=99s how to measure it. 1 / latency where latency is = what=E2=80=A6the maximum value you=E2=80=99ll see considering all = traffic as besteffort at a fixed number of concurrent flows? Otherwise = it would have do be expressed differently for different traffic classes, = which is probably already too complicated for most people. Food for thought, I know this is the opposite direction, but I=E2=80=99ve = always liked in Europe how car =E2=80=9Cmileage=E2=80=9D is expressed as = consumption (L/100km) instead of efficiency (miles/gallon). Yes, then a = lower number is better, but it=E2=80=99s easier to calculate how much = gas you=E2=80=99ll use for a given trip.= --Apple-Mail=_04A8D803-E44F-426D-B452-B5241DA7A269 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
On Nov 27, 2017, at 1:04 PM, Jonathan Morton <chromatix99@gmail.com> wrote:

My pet suggestion here is to represent latency as = its inverse, "responsiveness" with units of Hz.  This has the dual = advantages of bigger numbers being better, and the figures being = directly comparable with framerates.

As you = say, the methodology will need to be very carefully specified, so that = we get a meaningful measurement that's hard to = game.

I like that idea...

Then it=E2=80=99s how to measure it. 1 = / latency where latency is what=E2=80=A6the maximum value you=E2=80=99ll = see considering all traffic as besteffort at a fixed number of = concurrent flows? Otherwise it would have do be expressed differently = for different traffic classes, which is probably already too complicated = for most people.

Food for = thought, I know this is the opposite direction, but I=E2=80=99ve always = liked in Europe how car =E2=80=9Cmileage=E2=80=9D is expressed as = consumption (L/100km) instead of efficiency (miles/gallon). Yes, then a = lower number is better, but it=E2=80=99s easier to calculate how much = gas you=E2=80=99ll use for a given = trip.
= --Apple-Mail=_04A8D803-E44F-426D-B452-B5241DA7A269--