From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.15.15]) (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 D55383B2A4 for ; Fri, 10 Feb 2017 06:35:20 -0500 (EST) Received: from [172.17.3.29] ([134.76.241.253]) by mail.gmx.com (mrgmx001 [212.227.17.190]) with ESMTPSA (Nemesis) id 0LuOYx-1cSQBU1GqN-011fX9; Fri, 10 Feb 2017 12:35:19 +0100 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\)) From: Sebastian Moeller In-Reply-To: Date: Fri, 10 Feb 2017 12:35:18 +0100 Cc: Jonathan Morton , cake@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: <70520D3D-D381-44DC-A789-BB1E24FBE3F4@gmx.de> 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> <856BB65A-569E-4633-B104-5E3BD15B649F@gmail.com> To: Pete Heist X-Mailer: Apple Mail (2.3259) X-Provags-ID: V03:K0:YQ/wnLSs5THn7N7k5GMeaGWAzvNC+FIcNJRaj1UnJ4RrIjZ4CNr 1guIG1Z5jrR3j6jXq6n0Xt+ulzPnFg/qURh3UoES/gqO/0Fz6eHWEPFoCx3hyXnE0kF+flq WqN0IKGnsxB2L6vZxG6/EtErbVsxjNelNTK7mrAepGeP+xBAYA3IeJI/b6+/9pYIOtdhKL1 EmUG6Dl3ehCeQlGManUyw== X-UI-Out-Filterresults: notjunk:1;V01:K0:snjfi6CWSac=:34Qh23BWU8DDd3j8ziiXa6 5QQ/4rk5yu7GErJKq3Mm09dPaaT3Hiy7O4qltFcI8IAtsRx+U8r016lSmnIIdXFI1uc/DCtSu 8eAVnCELXzWUkycPxrO2gf/6e3c8AMvQbuiuTHKRfyOcFXvT//iISqWPbzms06S8BXCIp3m+2 G83/HFUep70XAFenUgEwGIj3Ifo8jOaIyiapMCroZoYWDqZwGP1YsovENuj6otvS8FG5Mm/Iz gHbrfLEJr2guHz7ASao3Be8Yz702S2/6QpVG9OWcThraTz8qCaASMUGpaiLdHqTUlP8DAAvFs 8vNVtqLnShNLL8fD/zPVjybkNqgPGL1z6BTLgYI5I1hSzDWhp50n6WDkAY28dmTW8ErNqgRmY 3m5E0Eq/5LcJxrwvFxnyymO+fAiuUA/E47IIn5vlBoz8fiNvFVz5JbJVikQAiMAVHx9HkaL6w hfZPnczBErYzCdDrbwg71tWAPPjn+ow4JZqV75E1wlWCHyJRoge+v9XkoODWZoCJM4acZl0bS 1nFirZkuKunmVg9Z1RYP6S1zhL4kMhaIE8rl5hlblsUsrJ9MySKvCNfdwrG0rveUPXdhUx8Fm xx+eIxPNVmPt6tpwAwTXV8iTdqp5yZJ6909mwlppyRPHNKHRjO9Yj2TZUm+fELmcFRN4vEkEf SD4ma+dUmu3RtVK5cFSIDQeq2J1JuehczCDbxeb50s46Yv7kb1BBQlgXLuvu0jJLM4OIcKFby k/M/cGKAa+4XjwB+8CPqV90l/nsObSiTku6kids0aGtImkrExvqF053zHOy0G+tr/CGP5zLGE 3oRGQ6J 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 11:35:21 -0000 Hi Pete, > On Feb 10, 2017, at 12:08, Pete Heist wrote: >=20 >=20 >> On Feb 10, 2017, at 11:31 AM, Jonathan Morton = wrote: >>=20 >>=20 >>> 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. >>=20 >> Okay, I guessed as much but wanted to be sure. >>=20 >> 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. >>=20 >> 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. >=20 > Not a problem. I=E2=80=99ll run a spread of Cake and fq_codel over = Ethernet at various bandwidths. It will be through their Apple USB = Ethernet adapters (used now for management), which are also connected = through a switch, but I think that setup should be fine for this = purpose. Should be done in a hour or so and we=E2=80=99ll see=E2=80=A6 I believe the Apple USB dongles are fastEthernet only, at least = the USB2 types I have available here, which for your tested bandwidth = would work, but it will not allow you test at what shaper rate things go = pear shaped=E2=80=A6 Also it wifi creates a bit more CPU load than wired = ethernet, it _might_ make sense to concurrently excercise the WIFI cards = just to re-create the SIRQ load (but probably not as the first = experiment ;) ). Best Regards Sebastian=20 >=20 > Pete >=20 > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake