From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-x22b.google.com (mail-wr0-x22b.google.com [IPv6:2a00:1450:400c:c0c::22b]) (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 9C3B73B29E for ; Tue, 19 Jun 2018 08:08:13 -0400 (EDT) Received: by mail-wr0-x22b.google.com with SMTP id d8-v6so20313385wro.4 for ; Tue, 19 Jun 2018 05:08:13 -0700 (PDT) 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=5rtxTMPfKlS17/YMYo1dOYIvJyx8GMM6TtNi5xIhXrY=; b=AOqrCTxudO3fbqS1PhTswhxQpBHuZFWQ7fpr3PNMoQidzP5GPljsfAI3JYWSyEt2Dx K5XCcRWxdxJKnEflQfwG6F4mvq7fWpfmf+K3jnJwqiy8ZAKfbi+Oya+P2jAssz0w2EVc 5Ak2m0Hu57TMplVQRhLCujyUJljp5RaSi7zee+Wp3OlEfwJ14x5HbmIf2Sk1K1cfdujE eizu/esnobHMFSXjLlClHfGMcX/70GnUIvuVML3pR5+mdhfqcQNTKeIG0iCAPCNUZemR AjVz7D2iKYHpCEJ+sWjFW6J3qrg1MeGK+ml72nB7eOVYToRIQfICjb6YjfawMhwPxJ2/ x7Pw== 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=5rtxTMPfKlS17/YMYo1dOYIvJyx8GMM6TtNi5xIhXrY=; b=l09mr2Pe2VdYLiDrYnl/HxxWQccxAe4FSdBd6vLJgsDKVC2sx8Q3VK7oQUzrNY7nsq pLhKYShzvBVq/ldWjMpiYAmOu+RQqq6zpG95QRjflaP2rDRyMCiG1OsdaO+Y9L4cHL27 UnUAH3r1s+oYSfZhwqcK/GlZq8y8oWRuooKk1dd8BRm4BoZiv4eUihyNNYlMGvYKMSy1 XPhqTGzDE8An9Mcpkz0g/PDQS/5njCjBnnZ0T/IV5PNqzX1aKaBJy2TBXE3OrfosFoHC SKyyf63afwUmDU2eqH/maTkQ6oWr7Sq+1c8XnZmq+DgAk7EYZ0lck1T4eEXDZ2e7vITU YsQg== X-Gm-Message-State: APt69E2IKA74aEdMK68Kp44m7FFIGr1hxcnPjWwMGdL2Is+rlDHG+5ys +N03GuGASf2c/LK5grb8cRmOW2pNMVg= X-Google-Smtp-Source: ADUXVKKkvSRWyoUFz06X3n/Ri7UmDF/8mkgjHZkL6EaIaSFuLXOV+YWZSIs9wLSXaBr4Ke7dgNz21Q== X-Received: by 2002:a5d:4906:: with SMTP id x6-v6mr13846996wrq.66.1529410092769; Tue, 19 Jun 2018 05:08:12 -0700 (PDT) Received: from tron.luk.heistp.net (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id 11-v6sm10383127wmd.35.2018.06.19.05.08.12 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 19 Jun 2018 05:08:12 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) From: Pete Heist In-Reply-To: <0FF888EC-4FF0-4AAE-B2B8-79A10B0B5A9E@gmail.com> Date: Tue, 19 Jun 2018 14:08:15 +0200 Cc: Cake List Content-Transfer-Encoding: quoted-printable Message-Id: References: <87in6ft81g.fsf@toke.dk> <0FF888EC-4FF0-4AAE-B2B8-79A10B0B5A9E@gmail.com> To: Jonathan Morton X-Mailer: Apple Mail (2.3124) Subject: Re: [Cake] the Cake stalemate 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: Tue, 19 Jun 2018 12:08:13 -0000 > On Jun 19, 2018, at 1:32 PM, Jonathan Morton = wrote: >=20 > My impression was that we were practically there - but we ran up = against a hang bug which *may* have had a root cause elsewhere than Cake = itself. I strongly suspect we're tickling a HW driver bug, but we need = someone with a different flavour of 100Gbps NIC to try (and hopefully = fail) to reproduce it. >=20 > There's not much hope of my getting that calibre of hardware myself. Me neither. I think that=E2=80=99s about the bandwidth of uncompressed = 8K video, 16 bpp @ 60 Hz. I don=E2=80=99t think I could drive it with = anything even if I had the NIC, and I don=E2=80=99t see an obtainable = alternative to Mellanox, which is around 1000 USD, and you need two or = at least the dual port version for twice the price. I=E2=80=99m glad if we may still make it with Cake then. My bad on the = stalemate interpretation- I was conflating some of the thorny feedback = with expressions of burnout. :) The feedback still stands though, but = for later...=