From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x233.google.com (mail-oi0-x233.google.com [IPv6:2607:f8b0:4003:c06::233]) (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 8156D21F2BD for ; Wed, 22 Apr 2015 01:34:16 -0700 (PDT) Received: by oiko83 with SMTP id o83so173305540oik.1 for ; Wed, 22 Apr 2015 01:34:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=R8uwMMCkL7dYGRvvuQg1BCDUhHfP/XNDQTO7FH8JfwM=; b=yEWOcIqVS1y5DsGwdfF6VNvfQFBIz2VY6PnL1g16MBy+11Nk6K+EcTUxXPH3Lhs+59 xHpeOaaW/f8QYDtU8Nb61vApNyxY5bbt1djkdU6jwPVCEv9Lon1sQ6Fx4BHD2GNbggIJ BB/lBE8EI3zU85GVEZ1jdsEziBbnXlpm8oUlxiVwqTfc10acaJDuWiXjmMKy1bHZur1K E7gNo40VfG0kdinrnmG4xALtpkRu12Y54QF2Zr7Wa6o0OaeUaH1OwrIP0fGsM7BBTmVg SqZnYwq80iGXAVZ3jemDJwhu53eKH93KO4tUs3s0Lg6KYjSR7V9y32qzOHbDzM2VjZ60 OzBg== MIME-Version: 1.0 X-Received: by 10.182.255.171 with SMTP id ar11mr1135294obd.29.1429691655224; Wed, 22 Apr 2015 01:34:15 -0700 (PDT) Received: by 10.202.71.139 with HTTP; Wed, 22 Apr 2015 01:34:15 -0700 (PDT) Date: Wed, 22 Apr 2015 01:34:15 -0700 Message-ID: From: Dave Taht To: cake@lists.bufferbloat.net Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Cake] 450 up stream test X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Apr 2015 08:34:44 -0000 I was finally able to induce "way" collisions and codel was not able to successfully control the depth of the queue in this test of 9 copies of the 50 up test.... root@nuc-client:~/git/iproute2-cake# tc -s qdisc show dev eth0 qdisc cake 8003: root refcnt 2 bandwidth 920Mbit diffserv4 flows Sent 13826214606 bytes 10775480 pkt (dropped 187301, overlimits 7841897 requeues 79) backlog 1732937b 769p requeues 79 Class 0 Class 1 Class 2 Class 3 rate 920Mbit 862500Kbit 690Mbit 230Mbit target 5.0ms 5.0ms 5.0ms 5.0ms interval 105.0ms 105.0ms 105.0ms 105.0ms Pk delay 0us 22.0ms 0us 19us Av delay 0us 12.0ms 0us 1us Sp delay 0us 3.8ms 0us 1us pkts 305686 4248957 0 520011 way inds 0 504555 0 0 way miss 3 165303 0 7 way cols 0 4656 0 0 bytes 1040146583 11540379317 0 1730046460 drops 38 187176 0 87 marks 0 0 0 0 We dont have a good way to plot a test this extreme, and offloads do hurt a lot. I turned off offloads to see what would happen: root@nuc-client:~/git/iproute2-cake# tc -s qdisc show dev eth0 qdisc cake 8004: root refcnt 2 bandwidth 920Mbit diffserv4 flows Sent 3147074201 bytes 2948700 pkt (dropped 115035, overlimits 4207356 requeues 417) backlog 1592366b 1159p requeues 417 Class 0 Class 1 Class 2 Class 3 rate 920Mbit 862500Kbit 690Mbit 230Mbit target 5.0ms 5.0ms 5.0ms 5.0ms interval 105.0ms 105.0ms 105.0ms 105.0ms Pk delay 0us 26.2ms 0us 9us Av delay 0us 12.2ms 0us 0us Sp delay 0us 4.7ms 0us 0us pkts 0 3064884 0 10 way inds 0 456896 0 0 way miss 0 106191 0 2 way cols 0 1085 0 0 bytes 0 3322825235 0 1186 drops 0 115035 0 0 marks 0 0 0 0 --=20 Dave T=C3=A4ht Open Networking needs **Open Source Hardware** https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67