From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dave.taht@gmail.com>
Received: from mail-qt0-x229.google.com (mail-qt0-x229.google.com
 [IPv6:2607:f8b0:400d:c0d::229])
 (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 688533B2A4;
 Fri, 20 Jul 2018 10:09:43 -0400 (EDT)
Received: by mail-qt0-x229.google.com with SMTP id a5-v6so10355581qtp.2;
 Fri, 20 Jul 2018 07:09:43 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;
 h=mime-version:from:date:message-id:subject:to
 :content-transfer-encoding;
 bh=H3ehM6kV2MUcgnTgfieuh18jaK4clEQNHW7spDIzJXw=;
 b=ODZcgEMYmfs5Mzyz7C0n5TFxPk7lfmPW7Ka8byKvrn3vMn9eH82G/TokpcTQMkVrud
 qz/dSwupBq5g20vQ3ejRAdgGcMGmSI/pZ7TEBc9VsBvvLQXlo08M3GTHXY/u1AHWI9Jf
 mshe9rk7XbBN60GnP+IHKiYVLTytxpFXuJmxy8Yu22ZJ+EfD16G/WMaOomgR2BPgbbzK
 YyYY4Ji9SB9GCJdFZqqtN6As692cmNj6AfMu7FfMFV1Z4ej/xs55vAH6mE2btMQpFbBg
 LHt+l6Fv59dBRYuuAERAOfjhUdppvw0s+8BqVVLHKboQCu4Vp0MEGPaxUocBdnFcloAe
 97TA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:from:date:message-id:subject:to
 :content-transfer-encoding;
 bh=H3ehM6kV2MUcgnTgfieuh18jaK4clEQNHW7spDIzJXw=;
 b=foBXXudrLwPZ8ZfhsLZcW6v/kZpz9NKz1b9/Jwmj9nskYy7dwnhP+64KwOSdfIGhJb
 DLz3VMnwneGKBhcj8SNhj0eOfbez40iT57Cn6+2OM3TPC7VgoveJDQ28f/Z8gk7Pn3jV
 1pJWiANsfzOUEe89Y8YXlUpS7qbeCp3I+JpDpAxUR9dq0x3+TSF4br0UpXEtuEOY8Ivi
 jJFO8i1P3c/fR1mmXEI2PC2QEdRXUp3ekxYYMJccUroITTGkSSpvODom7FInebYGpKAg
 HO8kOavxWIacOEhxNaugGUtidGlemCH43P+QsnAbGN+85Xf9uHZ8NCK9adK453Fm/jE8
 qmtw==
X-Gm-Message-State: AOUpUlGL5jNoSRzcc6+KKSqNRiYf8nZJCBZefeg4Hmb4rCACjibTKdeb
 0i3ssiCLw/jngbu7cyaJPXVP4zo+hMzCJ9HW1HjZF1Ta
X-Google-Smtp-Source: AAOMgpfs/qXHnMapp2hXJi7EO8elmvLh2xdWiJAlVU/cq7C/vQMzQbZNEv/iYmDTSlyhAHbtZ7FealJ6i7/qQe1ZzbY=
X-Received: by 2002:a0c:c345:: with SMTP id
 j5-v6mr1834707qvi.245.1532095782591; 
 Fri, 20 Jul 2018 07:09:42 -0700 (PDT)
MIME-Version: 1.0
From: Dave Taht <dave.taht@gmail.com>
Date: Fri, 20 Jul 2018 07:09:31 -0700
Message-ID: <CAA93jw7fzv+pe2CiD6YOZ_n=7zH2XjFW=HaFypbm=B-1OLraXw@mail.gmail.com>
To: bloat <bloat@lists.bufferbloat.net>, 
 Make-Wifi-fast <make-wifi-fast@lists.bufferbloat.net>, 
 Cake List <cake@lists.bufferbloat.net>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Subject: [Make-wifi-fast] Van Jacobson's slides on timing wheels at
	netdevconf
X-BeenThere: make-wifi-fast@lists.bufferbloat.net
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: <make-wifi-fast.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/make-wifi-fast>,
 <mailto:make-wifi-fast-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/make-wifi-fast>
List-Post: <mailto:make-wifi-fast@lists.bufferbloat.net>
List-Help: <mailto:make-wifi-fast-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/make-wifi-fast>,
 <mailto:make-wifi-fast-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Fri, 20 Jul 2018 14:09:43 -0000

https://www.files.netdevconf.org/d/46def75c2ef345809bbe/files/?p=3D/Evolvin=
g%20from%20AFAP%20%E2%80%93%20Teaching%20NICs%20about%20time.pdf

Talking about replacing queues with timing wheels.

I will refrain from commenting other than noting A) I like it. We
essentially have limits in the OS on packet scheduling that make it
harder and harder to have sub 2ms, much less sub 10usec, queues with
the existing qdiscs and pacing systems B) that NIC support seems
needed. I can think of a lot of things I'd like to have in a NIC
(which certainly include default timestamping on rx and multiple kinds
of X-tuple hash) - but hadn't thought about replacing queues entirely!

I haven't read up on carousel yet either.

Look forward to seeing the video when it comes out.

--=20

Dave T=C3=A4ht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619