From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x243.google.com (mail-lf0-x243.google.com [IPv6:2a00:1450:4010:c07::243]) (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 5893B3B2A4 for ; Fri, 10 Feb 2017 05:31:11 -0500 (EST) Received: by mail-lf0-x243.google.com with SMTP id h65so2551329lfi.3 for ; Fri, 10 Feb 2017 02:31:11 -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 :content-transfer-encoding:message-id:references:to; bh=2uFvXjqX4vNcvhTzMdVBqg+VARiHwwfKg5Z/Uk1t5zQ=; b=tHwEl0SwuMr0hR5845CzQM7yzQ8BILM4r9/vP9RHim5/wLrz/GfP6tfxgm+ACU/1VT cCMkJN3oxOg5mv3oisxfxC3EEFgK//4PtDIKD/3hWkARuP7ohOKUdTB5OWtamnOi22No DD1WyhbEieYZ9l9dFhvNaTBeEtq/trT3mCFQn+XAPPQMeC5njXjrLfmlH9GqQGQz+pz1 o0gmPL8UcQ1bmE1VOnh4pQJwS1WpflRSOJJu95eZsw8+ykonpVbegLYw/HKXUkXMHsLr B04c/Ek9YtTo2mh2p59Qs+s9XKna4sYTseqpWLIGrNw6PXaRxqEUO3Dy7vLWFUNzz7lV T6Zw== 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 :content-transfer-encoding:message-id:references:to; bh=2uFvXjqX4vNcvhTzMdVBqg+VARiHwwfKg5Z/Uk1t5zQ=; b=ojV4eELfkNAtRfhOifrhjaJIXFVyXQatv3IJLFyGAI56K7zFgjS/E2VJgVV4aMwH15 FFMAHgEXc4VaZOc9pS8x/VhSpzI6lTDQUlbFvREqKbVsoqZnFBAISLDe6CKqOQTXvhsX 62xfBY3BwuSVEP2B5oeViU3UGxFN+6DkOAHlVBFrpsXVlqZmt2YEBRRFkb2dxpN/ngVs Yxqv2HG1qXa+ON3i3wuuECxW1v9JJdT4hJTZtKQwoug35u9r+vpaskf4q8+oIDZC0/P4 huH7G4o3P3Srk6/1AJxxaj0R4xNlBoXCJ7tMPqUiei0tJVNOCCYmWlTTIsGSZlqFaFGe Gtxg== X-Gm-Message-State: AMke39lVK0uPD2vYcrp1p1NUoNPdu9queYpXEGFw+iz3MHQDkyomrhdiinm8Bx4XWCrxQw== X-Received: by 10.46.14.26 with SMTP id 26mr3013987ljo.76.1486722669525; Fri, 10 Feb 2017 02:31:09 -0800 (PST) Received: from [192.168.100.16] (37-219-206-78.nat.bb.dnainternet.fi. [37.219.206.78]) by smtp.gmail.com with ESMTPSA id 87sm389995lft.27.2017.02.10.02.31.07 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 10 Feb 2017 02:31:08 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) From: Jonathan Morton In-Reply-To: <4B18C549-4CEF-4275-B9B3-CB8A046EB4EC@gmail.com> Date: Fri, 10 Feb 2017 12:31:06 +0200 Cc: cake@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: <856BB65A-569E-4633-B104-5E3BD15B649F@gmail.com> References: <459B9F17-317F-465E-8D2F-361CF47E5F32@gmail.com> <3D9E1A43-0182-4A1F-8262-6F587A79254E@gmail.com> <830143EE-20F2-42A5-A4FC-ECE7DF50C632@gmail.com> <652AA7A2-60C5-460F-AE60-CF4CB1D1D781@gmail.com> <5BE2A225-4B9C-4F0F-ACC5-C23CCC873DF5@gmail.com> <4B18C549-4CEF-4275-B9B3-CB8A046EB4EC@gmail.com> To: Pete Heist X-Mailer: Apple Mail (2.3124) Subject: Re: [Cake] Cake latency update 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: Fri, 10 Feb 2017 10:31:11 -0000 > On 10 Feb, 2017, at 12:05, Pete Heist wrote: >=20 > It means that both the ingress and egress have been redirected over = the same IFB device and QoS'd together. Okay, I guessed as much but wanted to be sure. I can=E2=80=99t think of any theoretical reason for these results. = Cake=E2=80=99s flow isolation should be robust enough to cope = transparently with bidirectional traffic in half-duplex mode. As you = say, a C2D should easily be able to keep up, and at these modest rates I = can even discount PCI bandwidth as a concern. So I might need to try to = reproduce it here. Does the problem go away if you use a wired link with the same setup = otherwise? Or is that inconvenient to try? I have some ath9k equipped = machines, but they would need to be set up. - Jonathan Morton