From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-x235.google.com (mail-ob0-x235.google.com [IPv6:2607:f8b0:4003:c01::235]) (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 CBB2721F2BD for ; Wed, 22 Apr 2015 01:16:02 -0700 (PDT) Received: by obfe9 with SMTP id e9so163561179obf.1 for ; Wed, 22 Apr 2015 01:16:01 -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=w5D53Uq6t+QmxfBlwBJ3v3bDCfiNbONeC92MdOOltos=; b=ppwARY6KQ3RZ+M3rDtJ59bt3f/6/5cBg0xlp7jcgpLbdmQlMisQcMlADeTtRg9KHJp fcM594t4Hb60HLwvu3sxLGlbMZlpuCn0OIulyvRkWYNOhYXrgB/mTcXBL5H3p62kKZcE YElkOxmIgKLhaBQmfyE69dXWkRF0Uj20ckM7IwRjJEY9BT7xKdXt2KArHys5FJkRFfC+ pFQP/xYUiG1GEpHPJq7AFae/2ysLTBtWYkZ8IHX+Hg3WzSF7Dn4WaHljDh4eYnWIoWBM aZjbWMb03qIrdQtcN12PHijY8jKlTum0U76Cm3uv+nylGV8oI1+n6oDC7w4SBSgYA0EP julg== MIME-Version: 1.0 X-Received: by 10.60.98.2 with SMTP id ee2mr22603705oeb.39.1429690561236; Wed, 22 Apr 2015 01:16:01 -0700 (PDT) Received: by 10.202.71.139 with HTTP; Wed, 22 Apr 2015 01:16:01 -0700 (PDT) Date: Wed, 22 Apr 2015 01:16:01 -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] out of tree "cake" now buildable on multiple linux versions 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 08:16:31 -0000 Do a: git clone https://github.com/dtaht/sch_cake.git # IF you have kernel source installed to leverage, adding cake is as easy = as: cd sch_cake make; sudo make install # How do you install kernel headers on various linuxes? NOTE: I did not take the time to get the linux version checks exactly correct, but did manage to get it to compile on linux 3.13 and linux 3.18 without error, on x86_64. To use it properly, you will also need to build and install the iproute with cake support: git clone git://kau.toke.dk/cake/iproute2/ iproute2-cake cd iproute2-cake #edit out the sfq_codel entry in tc/Makefile (for now) make make install #Then: tc qdisc add dev whatever root cake # and whatever options Some example results while a rrul test was running: d@nuc-client:~/git/iproute2-cake$ ./tc/tc -s qdisc show dev eth0 qdisc cake 8002: root refcnt 2 unlimited diffserv4 flows Sent 13895939355 bytes 9605458 pkt (dropped 194, overlimits 0 requeues 0) backlog 318798b 26p requeues 0 Class 0 Class 1 Class 2 Class 3 rate 0bit 0bit 0bit 0bit target 5.0ms 5.0ms 5.0ms 5.0ms interval 105.0ms 105.0ms 105.0ms 105.0ms Pk delay 6.0ms 5.0ms 1us 2.3ms Av delay 1.5ms 1.4ms 0us 654us Sp delay 317us 201us 0us 141us pkts 128068 316663 56 236467 way inds 0 0 0 0 way miss 3 40 3 7 way cols 0 0 0 0 bytes 45317244 11531124242 5524 2320607748 drops 173 21 0 0 marks 0 0 0 0 A problem I have is in reconciling the netperf-wrapper plots which hit a minimum of 2ms for sparse flows, where I typically see ~200us delay in the qdiscs themselves. I have generally not cared at all about about anything less than 3ms prior to now. qdisc cake 8003: root refcnt 2 bandwidth 920Mbit diffserv4 flows Sent 2298586363 bytes 1826648 pkt (dropped 45, overlimits 474931 requeues = 0) backlog 468331b 25p requeues 0 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 4.6ms 3.2ms 0us 5.2ms Av delay 1.5ms 1.2ms 0us 1.6ms Sp delay 303us 290us 0us 191us pkts 110498 111953 0 181478 way inds 0 0 0 0 way miss 3 31 0 6 way cols 0 0 0 0 bytes 347279080 1377499174 0 574954712 drops 14 0 0 31 marks 0 0 0 0 Have I mentioned how much I hate offloads? see the backlog relative to the number of "packets". Still, I do think developing this out of tree will help a lot, after we get kernel versions straightened out more. Next up is trying to get it to build on openwrt, also out of tree. --=20 Dave T=C3=A4ht Open Networking needs **Open Source Hardware** https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67