From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x232.google.com (mail-wm0-x232.google.com [IPv6:2a00:1450:400c:c09::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 0C27F3B29E for ; Sat, 4 Nov 2017 09:33:45 -0400 (EDT) Received: by mail-wm0-x232.google.com with SMTP id r68so6357721wmr.3 for ; Sat, 04 Nov 2017 06:33:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:subject:message-id:date:to:mime-version; bh=TYQPqx+gYgk75Y0thhqZokph+qfocejpE5rVH155InU=; b=Eo1ruk0Y52QfwVPTASe9fmuVDAQeEZS19lkoG8+QGsMDeH/gW8a3Z8rR6X5UgE9Lwf LCLvol3FBK5WRxsCEmusMYLT4X4xM6f5pEL9ZMDN1rWvWFseOnKLbZr03N1GqHJYM0bU kG9+yIunLudTaut8vJtpM8sz4L1GjQj2DNtwIW5UQMoR/5KvFrwH2n/YYc4hpcSX6Fc6 pT/gYMVoWfhDAh8EJXdEH7uRq66Bge5oJFJn4xrVZMHnSfP4V58m84TxdAJ+mPfLTBkc QkWGt/1pPesxxrgI7GOOYr7R3kzXDnWh4xmY9pCPoNtef6mzxZe+nT+dQVb1NGgnBoJv 7NbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:message-id:date:to:mime-version; bh=TYQPqx+gYgk75Y0thhqZokph+qfocejpE5rVH155InU=; b=JMCAnr2yawtc9+dlIhvGQTRfdmnnPKuvcvzcu2SHUYFB9ukROJ+DAXvXmDNy3nGNdc C/5SIY4vE+oSjYWYVLPBokRGqXxGJgNxsgXqABW64BtUQupAtHBpAODrraSFsh0wmovm ZLy8U5ZwrrWZRzDrXkqHICHnaIgQr6uJSo7AvZnZVh3FpUiXW9CldMo5rVnjEZ5ucwq5 wbW5tMKIk2OUBufVy+y6VvzWU242JTcc713+BPpfrWHuEru1T2Zpgbtl7M6PD8u6D5Ca OMVFiDfTZzyTV9Dn5V2JCHUc/V1NDNFyf+kgsHAj/jAq+/NnyeQSdtzj54t28XB6KuhT 3KKQ== X-Gm-Message-State: AJaThX6fGLq2dASPI8N9vHLnOfjV+MMT4dzlyAQ/Q+ie+d5k7YAxF5rX +Ufq0hC1kF4ng0JCRDBCLdqmuYFR X-Google-Smtp-Source: ABhQp+T0YALsQ+DOy2mjy83YDq/o8y32V2gOSibhsKbBRxOXGP3D5hb3zmIWEndFLwX35d8iU+JTJA== X-Received: by 10.28.5.148 with SMTP id 142mr1536033wmf.142.1509802424569; Sat, 04 Nov 2017 06:33:44 -0700 (PDT) Received: from [10.72.0.130] (h-1169.lbcfree.net. [185.99.119.68]) by smtp.gmail.com with ESMTPSA id o11sm7428022wrg.5.2017.11.04.06.33.43 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 04 Nov 2017 06:33:43 -0700 (PDT) From: Pete Heist Content-Type: multipart/alternative; boundary="Apple-Mail=_496EC51C-F9F5-4CF5-B0D1-D531E1429F04" Message-Id: <535CD0D7-CB3A-4C42-AB13-548313F9002A@gmail.com> Date: Sat, 4 Nov 2017 14:33:41 +0100 To: make-wifi-fast@lists.bufferbloat.net Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) X-Mailer: Apple Mail (2.3124) Subject: [Make-wifi-fast] Flent test hardware X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Nov 2017 13:33:46 -0000 --Apple-Mail=_496EC51C-F9F5-4CF5-B0D1-D531E1429F04 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 My Flent test rig needs a refresh. I currently use two Mac Minis. The = Intel with the Core 2 Duo P7550 and forcedeth Ethernet is OK, so I could = possibly keep it (but no BQL support which is not ideal for some tests), = but it=E2=80=99s time for my G4 Mini with 100 Mbit Ethernet and = stratospheric clock drift to go. So I=E2=80=99m searching for one or two low-cost Flent devices (client = or server- which needs more CPU by the way?). Requirements: - Gigabit Ethernet (1x ok, 2x better) with a reliable Linux driver with = BQL support - PTP timestamp support (http://linuxptp.sourceforge.net = ), hardware preferable - enough CPU to accurately do Flent=E2=80=99s higher flow count tests = like rrul_torrent or rrul_be_nflows with 64 flows (sometimes I also do = these together with one or more instances of rrul_be to test host = fairness) I started a spreadsheet of what I=E2=80=99ve found so far here in Czech: = https://docs.google.com/spreadsheets/d/1MVxGsreiGKNXhfkMIheNFrH_GVllFfiH9R= U5ws5l_aY/edit?usp=3Dsharing = I=E2=80=99m leaning towards either one of the low-end Intel NUCs or = GIGABYTE BRIX mini PCs, to which I=E2=80=99d add some memory and = storage. But so many of these low-end devices come with Realtek Ethernet = (r8169 driver?). I=E2=80=99m not sure how stable that driver is, if the = BQL support is usable = (https://www.bufferbloat.net/projects/bloat/wiki/BQL_enabled_drivers/ = ), = and I=E2=80=99d have to settle for software timestamp support for PTP. = With a higher budget, I might go for a 1U server with well-supported = Intel NICs, something like described in this setup = (http://www.academia.edu/10312557/DEVELOPING_LOW-COST_NTP_STRATUM_1_SERVER= S_WITH_LINUX_PTP_AND_GPS = ). But I can=E2=80=99t seem to find those = cheaply (even <$1000) here. Any thoughts or ideas on this? --Apple-Mail=_496EC51C-F9F5-4CF5-B0D1-D531E1429F04 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 My Flent test rig needs a refresh. I currently use two = Mac Minis. The Intel with the Core 2 Duo P7550 and forcedeth Ethernet is = OK, so I could possibly keep it (but no BQL support which is not ideal = for some tests), but it=E2=80=99s time for my G4 Mini with 100 Mbit = Ethernet and stratospheric clock drift to go.

So I=E2=80=99m searching for one or two = low-cost Flent devices (client or server- which needs more CPU by the = way?). Requirements:

-= Gigabit Ethernet (1x ok, 2x better) with a reliable Linux driver with = BQL support
- PTP timestamp support (http://linuxptp.sourceforge.net), hardware = preferable
- enough CPU to accurately do Flent=E2=80=99= s higher flow count tests like rrul_torrent or rrul_be_nflows with 64 = flows (sometimes I also do these together with one or more instances of = rrul_be to test host fairness)

I started a spreadsheet of what I=E2=80=99= ve found so far here in Czech:

https://docs.google.com/spreadsheets/d/1MVxGsreiGKNXhfkMIheNFrH= _GVllFfiH9RU5ws5l_aY/edit?usp=3Dsharing

I=E2=80=99m leaning towards either one = of the low-end Intel NUCs or GIGABYTE BRIX mini PCs, to which I=E2=80=99d = add some memory and storage. But so many of these low-end devices come = with Realtek Ethernet (r8169 driver?). I=E2=80=99m not sure how stable = that driver is, if the BQL support is usable (https://www.bufferbloat.net/projects/bloat/wiki/BQL_enabled_dri= vers/), and I=E2=80=99d have to settle for software timestamp = support for PTP. With a higher budget, I might go for a 1U server with = well-supported Intel NICs, something like described in this setup (http://www.academia.edu/10312557/DEVELOPING_LOW-COST_NTP_STRATU= M_1_SERVERS_WITH_LINUX_PTP_AND_GPS). But I can=E2=80=99t seem to = find those cheaply (even <$1000) here.

Any thoughts or ideas on = this?

= --Apple-Mail=_496EC51C-F9F5-4CF5-B0D1-D531E1429F04--