From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x232.google.com (mail-oi0-x232.google.com [IPv6:2607:f8b0:4003:c06::232]) (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 D23803B2A0 for ; Sun, 24 Apr 2016 11:44:51 -0400 (EDT) Received: by mail-oi0-x232.google.com with SMTP id x201so156673548oif.3 for ; Sun, 24 Apr 2016 08:44:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to :content-transfer-encoding; bh=ODjgqpZPpCtT5Swuo1ERFkRYDwcf0OhJEDNhwJ70jRY=; b=TL9D/ZqTQ3y1QMtbj69VGqkuiqoaozFF9O/9Ph5YFElUL8r3VqKXQIiLk98RmrCKLA EQntcQy2OGTGZmJqD6V1fT0ZeyAp7opwJ1ey3Z7F0w+pYUChMW46rodZxOX4wC0zfMb+ PC3SkwcTMWPihNWLhGEsHiNL5JLmCh0WzfsAjVYH+9VMDHNRtIljS2G91JvNOFLTJ6o8 YXg3YAUnRK5FJLsYn5EJJvW/nRiC+fljgQgDVFKk708YsiVh9VJGe+JGsBWkglyrBqQG xirO6rqE8NvnJSucqA+I2GOHgW5DcCcd1gtYxlYTs4QMcaweXFJiOWiIZYZeX/l1259M C5wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-transfer-encoding; bh=ODjgqpZPpCtT5Swuo1ERFkRYDwcf0OhJEDNhwJ70jRY=; b=Fe/S78E+LUU4jyCKw3PubYZ29TQddJPxJIvM9utv4f8rU2DxWsVQAYuEWQfGmX7qsS XVarZRCmlQ0IRhdXVJE1h22ENJa3z/sjIUPYEBi10SMSW2F44pzLvt1lEIQ0J5Y/PzBq etGZS4ww8H6S8wgPymgWIbsNMD1fFkFTt7UqOJFNuO+2qjWUMRrZcu+qAsujF5kffl9v k3/B1MAdt1Y8hZB7Uvx5VgX36cRgpsfDTQudPtjuJJ7Qqsubdv+cbcjN+PJacI1BEYZW RZNIfSyY3WhojOFNdt+0corrWtlzZjLpw+K/bLApUrEezRACzRAyfU9qIJnQio4uVS6K HUVg== X-Gm-Message-State: AOPr4FWgPzz3Dgbc1vzNW1IC6LFP+0ebJ0wjmRsIpIReqSaYAqYM9z5Td8iwk5lsXRckk/UjIRVPwdqshIeOLA== MIME-Version: 1.0 X-Received: by 10.157.57.132 with SMTP id y4mr11359662otb.169.1461512691345; Sun, 24 Apr 2016 08:44:51 -0700 (PDT) Received: by 10.202.79.194 with HTTP; Sun, 24 Apr 2016 08:44:51 -0700 (PDT) Date: Sun, 24 Apr 2016 08:44:51 -0700 Message-ID: From: Dave Taht To: cake@lists.bufferbloat.net Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Cake] perhaps a performance optimization 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: Sun, 24 Apr 2016 15:44:52 -0000 thought: since it takes two data packets for tcp to release an ack, perhaps it is better in some circumstances (notably with offloads enabled) to peel at quantum * 2, still delivering packets with a quantum (with a max of a mtu), so that delivering two unpeeled packets would cost that flow a DRR round, but save a lot on peeling overhead. sch_fq has a quantum of 3028. --=20 Dave T=C3=A4ht Let's go make home routers and wifi faster! With better software! http://blog.cerowrt.org