From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) (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 BAB603B2A4 for ; Mon, 18 Sep 2023 18:52:31 -0400 (EDT) Received: by mail-wm1-x32b.google.com with SMTP id 5b1f17b1804b1-403004a96eeso53835015e9.3 for ; Mon, 18 Sep 2023 15:52:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1695077550; x=1695682350; darn=lists.bufferbloat.net; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=E8jNTeZgioA5hfRVI2uIqEmIoEnnsmHWKI9RoIYKgSA=; b=CSEIdOTSTsmpAvBnWq3EWKUZe5qYdAIvV0AGpHyO/fCt+WkB1EYktmOwXTVkmwq9s4 Ppg7X80YoUN+HexWvOTDXb1khVMlJwkpqYcTelX7Ae+H1yJ5aa2kuEZ9R3AeJGUpet15 EoAU/JygZII5sNTbX/HckXkHM1uokAGfT9bJrPDed++8nRUHVVNg/RZYf9rFBwXC5ZBO Od8rx3HYlGNQ0ccpRN/DSq0I1so16lm4HCosgiz2brXsJXMxAIOksfO7JVZG2+2bmTEE txq/6Uk+6mRzBY0C/Ucd0d8DxIrhBYP4oNrwFgF0X5UoMdQ7GtvEJnc/k7XOpJsFnb6Z cdJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695077550; x=1695682350; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=E8jNTeZgioA5hfRVI2uIqEmIoEnnsmHWKI9RoIYKgSA=; b=jRnJtHUowwEhnznGhDkSzn4axtRsiIASdjXK8QeXWL854Klaon9vMUmOiky5uDAyh8 4Mc5HenZJ/8aOL8f6Oad1avRUZ1UtYbKefFtTKwXYx5lZS55k3+Ye4DgWR6+oux9SfkN JCP9CyGOrRD2s6XeZ6P8nMdjKb/ijxdUIkdYmkbqGzhx6pq/jRgCFg4mrpR0r7t0aOTZ jCxwjRt+0pjF39dwmS5oquIuaB0sVTbCKGrQXJBBrGzpzQzXYg88gLnQD9x+XKN3SwI+ gtwNP05kXBJbi29guEbzxd63GFNRx/HQLn5RDltI34MxR2UZYjPi20kaU6ZZ8+Q4RhzM zwHQ== X-Gm-Message-State: AOJu0YzEHIvn0kRWccr3PXH+uoIrRbvfG2pmaAVlmcJpRq9E7PNz9bjD 4CbHsRattzgtq93Gk4DtMYG5SjhQkdJxqRTLFrAUqGGJmbI= X-Google-Smtp-Source: AGHT+IGvO3FaaNllyI1gx5lpFtTC1oFJbGQnv5JbHxvWVjAgHlEDwFubeWPYrzzl1x4i2G+cFYUYE9ozLNa4lTjK2yE= X-Received: by 2002:adf:d1e8:0:b0:320:bb1:5a73 with SMTP id g8-20020adfd1e8000000b003200bb15a73mr7098053wrd.22.1695077550364; Mon, 18 Sep 2023 15:52:30 -0700 (PDT) MIME-Version: 1.0 References: <115D8B11-D45F-4997-A048-8E3251E86625@gmail.com> In-Reply-To: <115D8B11-D45F-4997-A048-8E3251E86625@gmail.com> From: dave seddon Date: Mon, 18 Sep 2023 15:52:19 -0700 Message-ID: To: Jonathan Morton Cc: Cake List Content-Type: multipart/alternative; boundary="000000000000419c910605a9ffb3" Subject: Re: [Cake] some comprehensive arm64 w/cake results 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, 18 Sep 2023 22:52:31 -0000 --000000000000419c910605a9ffb3 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks Jonathan! Curious and curiouser I'd love to understand the difference between the tests I've been doing and your tests. - How many TCP flows did you have please ( cake performance seems to drop significantly with increased number of TCP flows, although I need t= o do more testing to understand why )? - What was the RTT? - Load tool? - ... so many questions :) On Mon, Sep 18, 2023 at 3:13=E2=80=AFPM Jonathan Morton wrote: > > On 18 Sep, 2023, at 10:50 pm, dave seddon via Cake < > cake@lists.bufferbloat.net> wrote: > > > > The cake tests so far had rtt 1ms and rtt 3ms, which might be too low. > ( If it is too low, then maybe it would make sense to remove "rtt lan =3D= rtt > 1ms" option, as it's a misleading configuration option? ) > > If all your traffic is over the LAN, and you have a machine and > application tuned for the extra-low latencies that a LAN can offer, then > setting LAN-grade targets for Cake might make sense. But most people's > traffic is a mixture, with the performance of Internet traffic being more > important, and that is better served by the *default* settings. > > You ran fq_codel at its default settings. These are equivalent to Cake's > default settings, so far as the AQM activity is concerned. I'm just aski= ng > for a like-to-like comparison. You could be pleasantly surprised. > > - Jonathan Morton --=20 Regards, Dave Seddon +1 415 857 5102 --000000000000419c910605a9ffb3 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks Jonathan!

Curious and= curiouser

I'd love to understand the differen= ce between the tests I've been doing and your tests.
  • = How many TCP flows did you have please ( cake performance seems to drop sig= nificantly with increased number of TCP flows, although I need to do more t= esting to understand why )?
  • What was the RTT?
  • Load tool?
  • ... so many questions :)

On Mon, Sep 18, 2023 at 3= :13=E2=80=AFPM Jonathan Morton <chromatix99@gmail.com> wrote:
> On 18 Sep, 2023, at 10:50 pm, dave seddon via Ca= ke <cake= @lists.bufferbloat.net> wrote:
>
> The cake tests so far had rtt 1ms and rtt 3ms, which might be too low.= =C2=A0 ( If it is too low, then maybe it would make sense to remove "r= tt lan =3D rtt 1ms" option, as it's a misleading configuration opt= ion? )

If all your traffic is over the LAN, and you have a machine and application= tuned for the extra-low latencies that a LAN can offer, then setting LAN-g= rade targets for Cake might make sense.=C2=A0 But most people's traffic= is a mixture, with the performance of Internet traffic being more importan= t, and that is better served by the *default* settings.

You ran fq_codel at its default settings.=C2=A0 These are equivalent to Cak= e's default settings, so far as the AQM activity is concerned.=C2=A0 I&= #39;m just asking for a like-to-like comparison.=C2=A0 You could be pleasan= tly surprised.

=C2=A0- Jonathan Morton


--
Regards,
Dave Seddon
+1 415 857 5102
--000000000000419c910605a9ffb3--