From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-x236.google.com (mail-qk0-x236.google.com [IPv6:2607:f8b0:400d:c09::236]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 79B5121F52D for ; Fri, 23 Oct 2015 09:10:16 -0700 (PDT) Received: by qkcy65 with SMTP id y65so80084763qkc.0 for ; Fri, 23 Oct 2015 09:10:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=oGnUqz2FBOZp4YBT9HMDdBrwwtRR5Ujm1nNA9l3lp4Y=; b=Yolgep8l9DPJgYpmFOAuh6iHPVnt5MQ2NILyOYznJn7X2Koq36Sw3pIsCBOeTb7c1o pd2wPWJLlV1/bdmAFTPtpJRUXgsrwX/0josjpLbXMDxvuDCxiFXZeabmltq8Ga0d8CVW LAn7y4bXDZ6yw+7eAgiaDOocZS71SO5EhGUahTZpu5zkiaDS5WJ1PJzgZ2+9bC5BzbG0 uDw75DYW1LE+IZHK3zeXA8C2ltWOR/XeCCJ/k9Juh4Ihfit25h+i9Nfbne/lOMMqjQI/ BEFd38WEvxCRIx4YM7RF0rGRtaSsjDUc+6ZOT7hy8kk75vkcpmdDHAsbmd3zYAxYo0oN LG7g== X-Received: by 10.140.145.75 with SMTP id 72mr27692205qhr.81.1445616615093; Fri, 23 Oct 2015 09:10:15 -0700 (PDT) Received: from [192.168.1.172] (207-180-163-171.ma.subnet.cable.rcn.com. [207.180.163.171]) by smtp.googlemail.com with ESMTPSA id g97sm7710142qge.6.2015.10.23.09.10.13 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 23 Oct 2015 09:10:13 -0700 (PDT) Message-ID: <562A5BE5.6010101@gmail.com> Date: Fri, 23 Oct 2015 12:10:13 -0400 From: Richard Smith User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: cerowrt-devel@lists.bufferbloat.net Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [Cerowrt-devel] Problems testing sqm X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Oct 2015 16:10:38 -0000 I have a shiny new Linksys WRT1900ACS to test. I thought it might be nice to start with some comparisons of factory firmware vs OpenWRT with sqm enabled. So I built and installed an openwrt trunk but the results were very non-impressive. Rrul test reported mulit-seconds of latency and it was equally non-impressive with sqm enabled or disabled. So I assumed that sqm in trunk on this device must not work yet. Then I wondered how well sqm in trunk was tested and that perhaps its broken for all devices. So I tested openwrt trunk on my Netgear 3700v2 and saw the same results. Then I tried openwrt cc and got the same results. Finally, I went to the reference implementation: cerowrt 3.10.50-1 on my 3700v2. Same results. So at this point I'm thinking there's a PEBKAC issue and I'm not really turning it on. Here's my enable procedure: Go the sqm tab in the GUI and set egress and ingress to 10000, set the interface to the upstream interface, click enable, click save and apply. Everything else is left at default. ie fq_codel and simple.qos. I've also tried a reboot after enabling those settings and then gone back to the gui to verify they were still set. My test setup: Laptop<--1000BaseT-->DUT<--1000baseT-->Server I run netperf-wrapper -H Server -l 30 rrul and look at the 'totals' or 'all' plot. If I run the above with this setup. Laptop<--1000baseT-->Server Then I get the expected 800-900Mbit/s with latencies < 15ms. So I don't think there's a problem with my test infrastructure. What am I missing and or what's the next step in figuring out whats wrong? -- Richard A. Smith