From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x236.google.com (mail-oi0-x236.google.com [IPv6:2607:f8b0:4003:c06::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 ECF2221F9BF for ; Sat, 27 Jun 2015 10:59:17 -0700 (PDT) Received: by oigb199 with SMTP id b199so94701192oig.3 for ; Sat, 27 Jun 2015 10:59:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=bvSeR6g9OYJiceRZ4MlobtpBIIP4UbQnz5DAwiab/X0=; b=lgBPx94vpie/H7CU9rx/GbqwUzRHItEUNzglF6uQzZSEDi9Ba2b09hG8s6o116BZDM xBH+pnY2twP25XCi+AZtxS8ZPxredLNDj2YyDOPPdideBAp1oS9+zsm2TmK+8W9jyNWq 9plg03ADa/E5RCrgebm13oQ4yUccnop0jn9vHybQ7nrI1AKDxmsPcO0nEyiQ9UewUmrj k57eeVz4nng4SyDXgVpmzqemXrtlyGmzn7DAA9fpA1mjeW3EwFr6CcZ6gjzwzUNhF4ur 4MeY9CSnayP0AS3Rd7UWeJtPAZ+FPSupN8th68fABU4OtAKCMzkB4KnMefg1IG4E347O wlNQ== MIME-Version: 1.0 X-Received: by 10.60.78.230 with SMTP id e6mr6991843oex.24.1435427956529; Sat, 27 Jun 2015 10:59:16 -0700 (PDT) Received: by 10.202.105.129 with HTTP; Sat, 27 Jun 2015 10:59:16 -0700 (PDT) In-Reply-To: References: <43D5C3CE-F1F4-4BA5-AEB9-55348661C7BA@gmx.de> Date: Sat, 27 Jun 2015 10:59:16 -0700 Message-ID: From: Dave Taht To: Mikael Abrahamsson Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest build test - new sqm-scripts seem to work; "cake overhead 40" didn't) 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: Sat, 27 Jun 2015 17:59:47 -0000 On Fri, Jun 26, 2015 at 10:50 PM, Mikael Abrahamsson wro= te: > On Fri, 26 Jun 2015, Dave Taht wrote: > >> your results are showing basically tail drop behavior. Although I >> would have expected intrinsic delay on the link to crack 100mbits on >> the rrul test, not 20ms (which is still high), and you only hit 7 on >> the single threaded tcp up test, based on what I saw in the driver. >> >> turn off sqm, stay at 100mbit, let fq_codel ride, try the rrul_50_up >> test. Also do a capture to see if CE was ever exerted. > > > http://swm.pp.se/aqm/rrul_50_up-2015-06-27T072819.166452.iperf3_150626_9_= 100M.flent.gz > > I have a capture of this as well, it's 1.5gigs. It has lots of mentions o= f > ECT(0) but 0 mention of ECT(1). TOS should be 0x3 when the EC=3D1 ? I see= no > such packets. All the packets are 0x2. > > http://swm.pp.se/aqm/rrul_50up-100M.pcap.bz2 Maybe you are dropping at the internal switch? A lot of manufacturers ran everything through the switch, even the uplink, in recent years. This will make things hard to fix. > I went back to gig and set SQM to 50 megabit/s bidirectional and looking = at > tc qdisc -s eth0 I see ecn_mark 10339 on a single queue, none of the othe= rs > have non-zero ecn_mark. Yea, well, you need to use a diffserv enabled test to see marks or drops in other queues. Sort of my hope is that cake can run at 940mbit with software rate limiting. But we probably need to find ways of parallizing the needed softirq. > >> I do not know why my linksys ac1200 build does not work. I generally >> suspect it is because my big build server is getting ancient. Can you >> send me your .config file for openwrt? > > > http://swm.pp.se/aqm/wrt1200ac.config > > This was my first try, I haven't fine tuned it yet, but it works (boots a= nd > moves packets anyway :P ) Must be nice to win on the first try. > >> It would be VERY helpful if you pulled from ceropackages-3.14, and >> added and built kmod-sched-cake and tc-adv and switched to using the >> ceropackages feed also for luci-app-sqm and sqm-scripts. There are a >> couple people here that would probably leap on that! :) > > > I will give it a go in the next few days. > > > -- > Mikael Abrahamsson email: swmike@swm.pp.se --=20 Dave T=C3=A4ht worldwide bufferbloat report: http://www.dslreports.com/speedtest/results/bufferbloat And: What will it take to vastly improve wifi for everyone? https://plus.google.com/u/0/explore/makewififast