From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x22d.google.com (mail-oi0-x22d.google.com [IPv6:2607:f8b0:4003:c06::22d]) (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 0231421F7F0 for ; Fri, 6 Nov 2015 21:16:20 -0800 (PST) Received: by oige206 with SMTP id e206so23311491oig.2 for ; Fri, 06 Nov 2015 21:16:19 -0800 (PST) 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=ljC1CvKtGtznqUjIsojd4viWMBB7tlbRE+/RrV7wq8I=; b=dazNnnvBIGr0jEczwEQGbN099TYggfQVK0q15yxAo+w36elRI07PMDlEzVgOJd1dgQ o+jQoPCmIkqSlQtiHb1vS/U3ruRHMoU7ODXoz0NDoR2PZdSuUTnjTI2tUnfx5NByBbWZ xZVVkT9RToWkRT/NDTF67SxZFV+7KzIt4nGqiOQYF7xl/NgWaC0s9w9UvcN7KjWc67iP hifUyN2Zrus+YWG6aHWSL2iEoZEj/eo+zA2gvzFTPRWJrzhFoC2y5GxUv1C1MtVzPPPq P1GHDVDX6HtrlgwkU5gWzCiTAfQsE3ExJJc0I6ALJYhOZgY2fd5B38it+b/Q5aW1/YRf kSxw== MIME-Version: 1.0 X-Received: by 10.202.221.68 with SMTP id u65mr10319829oig.34.1446873379827; Fri, 06 Nov 2015 21:16:19 -0800 (PST) Received: by 10.202.61.133 with HTTP; Fri, 6 Nov 2015 21:16:19 -0800 (PST) In-Reply-To: <340E3F23-2F9C-449F-ACA7-86031FBE3B31@gmail.com> References: <87pozspckj.fsf@toke.dk> <6A2609D9-7747-487B-9484-ECC69C50DE96@gmx.de> <874mh3pai9.fsf@toke.dk> <50C2A7B7-1B81-41E1-B534-CA449296FE77@gmail.com> <87ziysldij.fsf@toke.dk> <87vb9fl7ec.fsf@toke.dk> <87611fkyd7.fsf@toke.dk> <340E3F23-2F9C-449F-ACA7-86031FBE3B31@gmail.com> Date: Sat, 7 Nov 2015 00:16:19 -0500 Message-ID: From: Dave Taht To: Jonathan Morton Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: cake@lists.bufferbloat.net Subject: Re: [Cake] Long-RTT broken again 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: Sat, 07 Nov 2015 05:16:43 -0000 I note that truesize is a bad indicator for tests on the rx path where acks are usually 2k. Dave T=C3=A4ht Let's go make home routers and wifi faster! With better software! https://www.gofundme.com/savewifi On Sat, Nov 7, 2015 at 12:02 AM, Jonathan Morton wr= ote: > >> On 6 Nov, 2015, at 16:15, Toke H=C3=B8iland-J=C3=B8rgensen wrote: >> >> Added a run with Reno to the same directory. Smoother, but worse overall >> throughput. > > Yes, looks like it=E2=80=99s ramping up the slow way, and hasn=E2=80=99t = reached the BDP by the time the test run ended. > > However, it also looks like it=E2=80=99s properly ack-clocked, unlike CUB= IC, so while it=E2=80=99s still bursty, it isn=E2=80=99t overflowing the bu= ffer except during slow-start. > > The fact that slow-start terminates (due to loss) after only a few RTTs i= s suspicious. What parameters are you giving to netem? I note that the de= fault packet limit in netem is 1000, which is 1.5MB... > > - Jonathan Morton > > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake