From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f171.google.com (mail-we0-f171.google.com [74.125.82.171]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id A47152012AC for ; Wed, 23 May 2012 15:36:51 -0700 (PDT) Received: by wejx9 with SMTP id x9so10451329wej.16 for ; Wed, 23 May 2012 15:36:49 -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=Bz8SVVeo69C+3PsKKTjch2ayPNS54K/gxbjaiBLgvBE=; b=DyadijxUhmOhH9mktc1XvQXzTzsBbQpDbCFkygcJ5LtmiIimnQXkYGqjN0gFDoq0nR +7BhhTXTfKpvjlU7Jwevjs/NeNMI//EVcB+hM7CFxVKjX5FsI6YRZATzrV+ReraXhjYT Wv78QoqSYgTuiZJy4YhHAf5QUqcFyeBhJynKPKNH3xXuS+zVlRoMhiZiIyJPGY+iL+cq Tog75VZP8+4g61hiwffKaUCAyqjLovmU1u3EAtYWyXDC3tNmt2dYdd6e/9tItNWzbrY1 rV2eA8yseO5LjVfki2HoNcIhiO/ohM3qs5KS5R2jQpQKk7R37KmseiUEc66UExE1JEHT 1H5w== MIME-Version: 1.0 Received: by 10.180.95.137 with SMTP id dk9mr40739811wib.1.1337812609365; Wed, 23 May 2012 15:36:49 -0700 (PDT) Received: by 10.223.115.9 with HTTP; Wed, 23 May 2012 15:36:49 -0700 (PDT) In-Reply-To: References: Date: Wed, 23 May 2012 23:36:49 +0100 Message-ID: From: Dave Taht To: amoghvk@stanford.edu Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: cs244-spr1112-staff@lists.stanford.edu, codel@lists.bufferbloat.net, Rishita Anubhai Subject: Re: [Codel] CoDel + 3.3 kernel X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 May 2012 22:36:52 -0000 you didn't install the tc utility properly. what I usually do is TC=3D/path/to/my/codel/repo/tc/tc export TC $TC -s qdisc show dev whatever you will see on these lists pointers to a netperf script, called bloat.sh which could use some improvement. Also, netperf from svn has multiple new features useful in exploring this stuff, notably remote control of different congestion control algorithms, tos/diffserv bit setting, etc. I note that it helps to turn BQL down to minimal values. I note also that fq_codel is pretty amazing, too. So is qfq + codel. Happy explorations. See also the debloat, and simple_qos.sh scripts in my deBloat github reposi= tory. We look forward to hearing about your results. On Wed, May 23, 2012 at 11:02 PM, Amogh Vasekar wrot= e: > Hello Developers, > > This is Amogh here, a Masters student at Stanford University. As a first > step towards exploring CoDel, we're trying to reproduce the results on EC= 2 > using OpenFlow + Mininet and then take it from there. > > So far, I have CoDel with kernel 3.3 (Thanks for the deb packages! More o= n > kernel 3.4 later), with the codel specific iproute2 patch installed. > > With htb qdisc at root, and CoDel children I have an output as follows : > > --------- > tc -s qdisc show dev eth0 > > qdisc htb 1: root refcnt 2 r2q 10 default 12 direct_packets_stat 770 > =A0Sent 112338 bytes 961 pkt (dropped 0, overlimits 0 requeues 0) > =A0backlog 0b 0p requeues 0 > qdisc codel 110: parent 1:11 [Unknown qdisc, optlen=3D32] > =A0Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) > =A0backlog 0b 0p requeues 0 > qdisc codel 120: parent 1:12 [Unknown qdisc, optlen=3D32] > =A0Sent 6364 bytes 56 pkt (dropped 0, overlimits 0 requeues 0) > =A0backlog 0b 0p requeues 0 > qdisc codel 130: parent 1:13 [Unknown qdisc, optlen=3D32] > =A0Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) > =A0backlog 0b 0p requeues 0 > ------------------- > > I was wondering why I get an Unknown qdisc, optlen=3D32 error, even after > using the codel-specific iproute2 from Git. I noticed that the Git packag= e > has fq_codel specific code (I am using base Codel in kernel 3.3), is it n= ot > configured to handle this? > > Thanks for your help, excited about CoDel !! Let us know if you have any > suggestions. > > Amogh > > _______________________________________________ > Codel mailing list > Codel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/codel > --=20 Dave T=E4ht SKYPE: davetaht US Tel: 1-239-829-5608 http://www.bufferbloat.net