From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.toke.dk (mail.toke.dk [52.28.52.200]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 1CECF3CB35 for ; Mon, 7 Jan 2019 06:30:25 -0500 (EST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023; t=1546860622; bh=apSGEZLUpmVKwk+Vwj9WAFnNA7DX9NGPV84TwTAF9s4=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=JSY0yuWXH5T1NUH0ns0Pd0fyc5WzdfbX50zuDydtdyuDnVrg0kBfojnNLTgSppTmt ZtrrBUoH0hGgcgQ6mdiRWse7XMDKwhIL17zNY8nMvyZwrO0ej9Iqvo/vKRXYhjZYFR 3/9KSoJZCU61oYz88aCuPLGS8j9xWsWcHipVOlQbX4oJ5cvG4TpOd3XSMf1yKrmW+f nsfNQSpWdii2pJiW8jTYyl0yPsrMKlBPYQ+RUV/dVHioElSdg0kKNt73MYKI+LfFBi Lw0EfOvnlmNk+8RukfHdT/9nzzrMIgGZ0geuyC9PA72kpeJL72CkcSsZeR6fTQglps NVGsxyYR3yn9g== To: Pete Heist Cc: Cake List In-Reply-To: <75345B18-E171-44C8-B059-9F6A6A663CAC@heistp.net> References: <87wonjxvss.fsf@toke.dk> <0077CC34-490F-4D76-82D3-BE37B27F2E1C@heistp.net> <49A6DCF8-BE98-47F4-9C66-6B4288390A58@heistp.net> <87tvinxos7.fsf@toke.dk> <87r2drxnal.fsf@toke.dk> <45D43135-318B-48AD-B09B-69BBB034CE12@heistp.net> <87o98vxm57.fsf@toke.dk> <797FCC60-0048-4EF6-80BC-19707E9173FB@heistp.net> <87lg3zxdyr.fsf@toke.dk> <87imz2yiet.fsf@toke.dk> <252DC221-7024-4834-9757-96335372A5A7@heistp.net> <87ftu6yc2y.fsf@toke.dk> <11DD478A-E61D-4D62-92B3-30B9A9A9572E@heistp.net> <874laly07v.fsf@toke.dk> <75345B18-E171-44C8-B059-9F6A6A663CAC@heistp.net> Date: Mon, 07 Jan 2019 12:30:21 +0100 X-Clacks-Overhead: GNU Terry Pratchett Message-ID: <87sgy4wvqq.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] cake infinite loop(?) with hfsc on one-armed router X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jan 2019 11:30:25 -0000 Pete Heist writes: >> On Jan 6, 2019, at 9:56 PM, Toke H=C3=B8iland-J=C3=B8rgensen wrote: >>=20 >> Pete Heist writes: >>=20 >>> Lastly, is using cake as a leaf to htb risky until a fix is made? I=E2= =80=99ve >>> been doing that for a while without any apparent issues, though I=E2=80= =99m >>> hesitating now to try that in a production environment. >>=20 >> Hmm, that's a good question. I would expect so; but I would also expect >> the issue to show up pretty much straight away, so if you haven't hit it >> yet, I may be wrong. I'll do some more digging... Should probably also >> try to replicate all this stuff on my own machine :) > > > Ok, after what I=E2=80=99m seeing on my APU1 tests on 3.16.7, I=E2=80=99m= definitely > not putting split GSO into production. I just turned it on and off > three times and here=E2=80=99s what I got: > > Split GSO on: > > https://www.heistp.net/downloads/htb_split_gso/htb_cake_split_gso.svg > https://www.heistp.net/downloads/htb_split_gso/htb_cake_split_gso2.svg > https://www.heistp.net/downloads/htb_split_gso/htb_cake_split_gso3.svg > > Split GSO off: > > https://www.heistp.net/downloads/htb_split_gso/htb_cake_no_split_gso.svg > https://www.heistp.net/downloads/htb_split_gso/htb_cake_no_split_gso2.svg > https://www.heistp.net/downloads/htb_split_gso/htb_cake_no_split_gso3.svg > > I=E2=80=99ve seen these square waves before with htb and wondered where t= hey > came from, and I think we may finally have an answer! What manner of > thing causes this I don=E2=80=99t know, but there=E2=80=99s a chance you = may end up > finding out=E2=80=A6 :) Is this without the patch to CAKE that adjusts the qlen? And have you tried running with that patch (with HTB)? -Toke