From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) (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 968393CB35 for ; Sun, 6 Jan 2019 19:30:19 -0500 (EST) Received: by mail-wr1-x42b.google.com with SMTP id l9so41502098wrt.13 for ; Sun, 06 Jan 2019 16:30:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heistp.net; s=google; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=jZph5t7rifychNulD5kau5/jKPsymxow1K5uQTCA2Tk=; b=T1apFBOv6uReHhSJfNB72iRLRmiUGvU2Q/7uLNDSjKenQlP3ugUhS6SdhqrC+cev/D s7rwuD86dBw35WFMfP0ME0NxA/48xJb2322ewDEHCeITAtCXT1oJvpFgY0sHc/kWMWlm S5RXFSEQnBZf6fWILxKBKJMXq2ySNSepxr5kukRFqkRL1gBhaUmDvLwrgz0yWDfNyqbh U7kslwpSL7qGupd5uIT5fOee+Bks6o6G9INcnFQuZh19rRdbWwdcwrlPWz+wuM5xM+Lv rw0pSL+Rtus3VaDTUuJtHy/GcdAwD8PdhsVvQAa5jd9hIBuG1RarXMizpmnZklb4+UlL uh5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=jZph5t7rifychNulD5kau5/jKPsymxow1K5uQTCA2Tk=; b=tp8qZY2/AHcWo3bsxo8473VbVUMwbBTRFbOd7pr5nRFuVNkooir00p0r+U8PY6McXl rruboebdhg5ik1Crjr9PJWOGAn03j6oNyj2nkU833oj7Jgdov9ks4VT/NOLgIJa9rDA7 pqAizdSHnUOTuA1qCVbTq/snZEHYWndvr2JRvYbIcNCdXCapMv5TFA4I4LZR1DwtuyTf 1GhHXsmijNzq0UdDCjEOn9i6cjwcmPyR7mKtVLAHoT97vXvfuhYjGM0NTktabEA9eL5/ I1YuKNNyEx3Iv9EOSNEbpUidgDSVplI33GM2Ve4wzpvNiAm8C/Bz7ytffa2EmZIPWyKc CNzw== X-Gm-Message-State: AJcUukc0XNxC4hVtP3Py1iyQ1UsW3WrmRY78EiOS7RX3AOy9+2tOgA6A E6IjTzheHJB2FCZEDjmaTBLfEA== X-Google-Smtp-Source: ALg8bN61x+/qtMGOGTZKKpXnNLQRPopeV79ZfyMA33Xz93NCR3DuqrXARyTaRJOFneThmVgS3lhHHQ== X-Received: by 2002:a5d:558a:: with SMTP id i10mr48458766wrv.287.1546821018686; Sun, 06 Jan 2019 16:30:18 -0800 (PST) Received: from tron.luk.heistp.net (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id r3sm48001606wrs.78.2019.01.06.16.30.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 06 Jan 2019 16:30:17 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Pete Heist In-Reply-To: <874laly07v.fsf@toke.dk> Date: Mon, 7 Jan 2019 01:30:16 +0100 Cc: Cake List Content-Transfer-Encoding: quoted-printable Message-Id: <75345B18-E171-44C8-B059-9F6A6A663CAC@heistp.net> 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> To: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= X-Mailer: Apple Mail (2.3445.9.1) 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 00:30:19 -0000 > 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 = they 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 :)