From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt1-x830.google.com (mail-qt1-x830.google.com [IPv6:2607:f8b0:4864:20::830]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id BE85E3CB35 for ; Sun, 6 Jan 2019 21:11:56 -0500 (EST) Received: by mail-qt1-x830.google.com with SMTP id y20so46196933qtm.13 for ; Sun, 06 Jan 2019 18:11:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=fB2RvYu+fBJWimSc76ahKrKhP0tvWbFFdaVnhonmGqw=; b=uuNm3KPWYVWfwFup0ERbp6dN4gnY6/AWVoKm2T+vWPfWQnOGT4Z4/U4nEo2VQWQg3P RHj2WU8jiFCpx8SCrg4PBXW7bcIXMFFkeQKXnsnCtyQQWJJGEk66DlfPmABZQ3Mz7aVE GHze/qBU9Hdi9dQJx1z7NZqFv4gWiDSjHmpYCdYhfHxiqvxEGzTBU50Db5JbJ+3h/5uG 9Yot/nqFyliSmCGPdPQ57FBNra4V0nsoT9FkN3daDWXamV+qbPWYEu0NezysJbeomn+/ UqGsGA8n5R6d4iTFpopx1tgkytM3dV2Suc5Krifrr03oLAJpzl8YCUHwjOvmIJQtXov4 Y+sw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=fB2RvYu+fBJWimSc76ahKrKhP0tvWbFFdaVnhonmGqw=; b=JwCu4PCctkHHF17PNy/afMsH+KyYTTOYaWwqOjmEyXmteXoLm5xImkVWhFNZv37V1U wcT204QOSoLlGOTWlmPxOfireSVMWiRxjccjzwzJuTIDax6bsN8VQY2O4VadA6un7KcW L5QAtcZ5sO5LzFZbq/1MwOhc7uYEWAX4PBvwNzuvYFIeGRLoDDI4jGGbo0zrShTJoVcl Kl9bp+eqqlD4/oSOXmg54orKxDze4jN0G2vIvUO5w8+H8lvvG1SuyLOLk4cnlTuveiAK iLsoiOUPm+sLN0Vj4Opvze7S3EoYBavv05IlVLtloNnBUVlAcBfJ4GsbxFmy5loAzgN1 PyUw== X-Gm-Message-State: AA+aEWZp3/cHz9tnHjRnxUYOJk9aNjoDH27zC3vmFTO01vNc0PUECId9 tWPPZIr+q1ziAIhsaW2xubp36QG8KoWlthU56iGx3w== X-Google-Smtp-Source: AFSGD/VBfsPa7qnKHGpi5bgBmBsRYXJow3Y5pmmmB7Pi5NpMV0E6T5up1MfI+qGQlsgPOPFuhADWD3Mctk/a8BIEsYc= X-Received: by 2002:ac8:326a:: with SMTP id y39mr58799041qta.175.1546827115658; Sun, 06 Jan 2019 18:11:55 -0800 (PST) MIME-Version: 1.0 References: <4C422792-7E51-4DBA-A229-FA7D3F987FB6@heistp.net> <87zhsgxdao.fsf@toke.dk> <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> In-Reply-To: <75345B18-E171-44C8-B059-9F6A6A663CAC@heistp.net> From: Dave Taht Date: Sun, 6 Jan 2019 18:11:53 -0800 Message-ID: To: Pete Heist Cc: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , Cake List 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 02:11:56 -0000 another answer is to disable gro/tso in the driver via ethtool. On Sun, Jan 6, 2019 at 4:30 PM Pete Heist wrote: > > > > On Jan 6, 2019, at 9:56 PM, Toke H=C3=B8iland-J=C3=B8rgensen wrote: > > > > Pete Heist writes: > > > >> 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. > > > > 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 i= t > > 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 th= ing causes this I don=E2=80=99t know, but there=E2=80=99s a chance you may = end up finding out=E2=80=A6 :) > > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake --=20 Dave T=C3=A4ht CTO, TekLibre, LLC http://www.teklibre.com Tel: 1-831-205-9740