From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) (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 9CDBF3B29E for ; Thu, 31 Jan 2019 18:23:31 -0500 (EST) Received: by mail-wr1-x434.google.com with SMTP id v13so5154851wrw.5 for ; Thu, 31 Jan 2019 15:23:31 -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=9/zmCUFnerRWAbVWoTytFa9E6fUkYb3Jd5ZtTz07jG8=; b=Tu92Li2gmVm17CFYDDRor/dL396znTLip7VpjilRVorLU3sU3Cr/7NgDp8Ijfblxx7 jO/Xd8T+Rs+xqR6NM+vjMnKxZt4sTrQgGz/k/i1aUPf+RXIVDGQVH2iUAyN5XoAIovL7 E+AN/paDo2euHNLMhEFhPhqP/+y8Po76JguMSFz6yqJc2unsLugSu2aQ4902oLyMUYIH OyK9LS3g6TuwlhrnbPdiiAma/0wcAuUvyz7joDigZlvHpbXwq2hwYWqzD8kB0eFE17qf Bn6VcQZNQya3FXfzYaCxwsEkzmM92p0UxYbkHedZ+2AWlKIVSyM2whDnY5iOaHE1SivR 87wg== 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=9/zmCUFnerRWAbVWoTytFa9E6fUkYb3Jd5ZtTz07jG8=; b=N8HqfNKDu3KpkZ6eutu538g6N+if1dtPikOumfU7Rc7E4IiPRpM9B/gaAtLs69DMcM CjLKkbZ2Nq+aQqpJTUfrwDsQ6ScM/2sgYkqP7Z3noUkoCer9/TIeX3SiPUs1n/wSvRJ+ cLvFZl2K134onxeLUOaRREJlfaW54b3M4cK/yduNHvEHtqt91Sdltc6CLEnDKmWjZvim eO+kckiLLvnl8fL2dxiqHZqCUofWjRTcBmi7kQPLehkaBB8xpTkNYN7PwyP3AbWYoLDp n+nc+9bud1Qy/ta4ZxAu5lhgm3L6t/IEUMsIgv3b6J1h1CDdjrzpmkgCS0YU4tIf5ZKN sNcw== X-Gm-Message-State: AHQUAuYZTAJUwQeqIE2As2IMc2Kuh5PUf2QOdTnkyR8eJItsLbFD2/oF Fmoe1wJMT0gwjS16qTPBWIIr8Q== X-Google-Smtp-Source: AHgI3IaQyLVG5sKZktScKIQ+OEj8/G2jMBMdxsz5CRCNDyWi2q49GOcZlXc4Z+cDb5up//LQ+ZeHpA== X-Received: by 2002:adf:dc4e:: with SMTP id m14mr16742010wrj.107.1548977010781; Thu, 31 Jan 2019 15:23:30 -0800 (PST) Received: from tron.luk.heistp.net (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id n5sm7115096wrr.94.2019.01.31.15.23.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 31 Jan 2019 15:23:30 -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: <87ef8sifh0.fsf@toke.dk> Date: Fri, 1 Feb 2019 00:23:29 +0100 Cc: Cake List Content-Transfer-Encoding: quoted-printable Message-Id: <7052193E-AB03-4FF7-9155-4CE62A43D22F@heistp.net> References: <15FB76CC-44B2-496B-80EC-8D00AD2AF9B7@heistp.net> <87zhrhiwfv.fsf@toke.dk> <9540B582-7B7C-4846-BA40-54419DF109D4@heistp.net> <87r2csj2uk.fsf@toke.dk> <60A1337C-DE0E-43DE-B5CA-5815F615124D@heistp.net> <87ef8sifh0.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] lockup with multiple cake instances on 3.16.7 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: Thu, 31 Jan 2019 23:23:31 -0000 > On Feb 1, 2019, at 12:18 AM, Toke H=C3=B8iland-J=C3=B8rgensen = wrote: >=20 > (crossed streams; but yeah, basically the same conclusion) Ok, crossed-crossed streams references it is=E2=80=A6 :) >> Do you think this is a correct patch? >=20 > Well, the "correct patch" would be to get upstream fixed :) >=20 > But yeah, I don't think it would hurt to carry this as a workaround > patch until that happens... >=20 > I guess you could try running it for a while and see if anything else > blows up? You seem to have quite a knack for getting it to fail... ;) That sounds reasonable, let me see if I can break it in some different = cases. My guess is, past qdiscs didn=E2=80=99t manage to fill the tailroom = space and cause this problem, but I=E2=80=99m not sure=E2=80=A6