From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-x22d.google.com (mail-qt0-x22d.google.com [IPv6:2607:f8b0:400d:c0d::22d]) (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 966BE3B29E for ; Fri, 10 Nov 2017 16:50:03 -0500 (EST) Received: by mail-qt0-x22d.google.com with SMTP id d9so13515035qtd.7 for ; Fri, 10 Nov 2017 13:50:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=vNVNqZWBN2fAugo+Gmw/itLuvljPBrYsEKCbQLQLC8o=; b=N+F/uONvMhPb4C76CEp1m0TpjC5ulOJ16JjSCAZuY5/dVgUghZRHGL/2Q3ENj7/Nr6 m2bBnQxc3FZtvDMk4gYkY+ODVondPXm0tBkTcbcZuakV8KX+6NBjACg4RWLv1JpTZpEZ 8XU8PSp37vbyMZFu0rfseR0fRjaUf8QDlDyJxwnomF78iaVj26FyK/RHGxjmCS1nXy57 zGAb6hWHBEy1VwIdjioy8vUHmIgKiHNRHfDRlnFHmxaUhESOXPyqJrLPyD4Wx1qfQL0P qMEPFEpOd4cG6DZaUG4Lbx6uH3l0ln706zlQ6rGsM2EY9LbpV/DY1pH0g65v91vUiMdk Q4AA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=vNVNqZWBN2fAugo+Gmw/itLuvljPBrYsEKCbQLQLC8o=; b=XKMx9Z1FNPzl1T6BjEgxipbJLQlz1R3jT1t/IDubM4KWucwniqS6cP3M5OsaaEHtAE p9ZTCsmMet7jMlJrPna+Aa4+KPdvyXD/0RjlryAeP8B36E9bmVMXS2s27jqC9kzjpJpV iKrFtrV96FN5nlrfLMaZHt7HgWAQJDjuePlnxUS60mzK4hbR7rLAhUz9OMdn6R6XrD7X hEvhCjZm/ZWnmfbE5E+AGYLx0RCzyYOhsp18xeM6qUSO81OA5NQoTwZ/Ca38m7kSPJmk qbvAtd6DY6SadbGhSBADmKZhg43XozVJD/XKJpOeplukA5riVSrXSp9qOnktUZWpMjwL HQiQ== X-Gm-Message-State: AJaThX6gxsb80vMuKWZK5+c3+QlMi5pVBJHckVJ0lYcX+mJs5YKvO3AX ALjR0iunzy54Q07KYOZvH/z6K5xgVqFFlPYFHKc= X-Google-Smtp-Source: AGs4zMaosNBcaLEYlo8ne1P1P/AH1XFktXfkKPr/NPn8DuOb+KjWKHrv3hx46bFn+PhuiRdFRJ6J8hq8XsTi+36iZ1o= X-Received: by 10.200.41.19 with SMTP id y19mr3029016qty.300.1510350603169; Fri, 10 Nov 2017 13:50:03 -0800 (PST) MIME-Version: 1.0 Received: by 10.140.80.133 with HTTP; Fri, 10 Nov 2017 13:50:02 -0800 (PST) Received: by 10.140.80.133 with HTTP; Fri, 10 Nov 2017 13:50:02 -0800 (PST) In-Reply-To: References: <87po92aku1.fsf@nemesis.taht.net> <87efph4q0y.fsf@nemesis.taht.net> <87vaihkgr9.fsf@nemesis.taht.net> From: Jonathan Morton Date: Fri, 10 Nov 2017 23:50:02 +0200 Message-ID: To: George Amanakis Cc: Cake List Content-Type: multipart/alternative; boundary="001a113f408630348d055da7e7f9" Subject: Re: [Cake] total download rate with many flows 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: Fri, 10 Nov 2017 21:50:03 -0000 --001a113f408630348d055da7e7f9 Content-Type: text/plain; charset="UTF-8" In fact, that's why I put a failsafe into ingress mode, so that it would never stall completely. It can happen, however, that throughput is significantly reduced when the drop rate is high. If throughput is more important to you than induced latency, switch to egress mode. Unfortunately it's not possible to guarantee both low latency and high throughput when operating downstream of the bottleneck link. ECN gives you better results, though. - Jonathan Morton --001a113f408630348d055da7e7f9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

In fact, that's why I put a failsafe into ingress mode, = so that it would never stall completely.=C2=A0 It can happen, however, that= throughput is significantly reduced when the drop rate is high.

If throughput is more important to you than induced latency,= switch to egress mode.

Unfortunately it's not possible to guarantee both low la= tency and high throughput when operating downstream of the bottleneck link.= =C2=A0 ECN gives you better results, though.

- Jonathan Morton

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