From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x231.google.com (mail-wm0-x231.google.com [IPv6:2a00:1450:400c:c09::231]) (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 10CBB3B25E for ; Sat, 17 Sep 2016 14:34:46 -0400 (EDT) Received: by mail-wm0-x231.google.com with SMTP id 1so93364583wmz.1 for ; Sat, 17 Sep 2016 11:34:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soltysiak-com.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=iYjz6Goz5DbDNVWpD36njpM22WG4fXtOtZBFH2kqlPA=; b=C0XHRtFVtBHcnoNKSJiNfFYQQtHVubb6GwASAgZdrg3r6dcp/87hJOMtom+xelEDvs fFFM3SkSvkHY8UcUqd5rBNLkEINWdThGSLIkNknorlw1iwWw60uWXMHwnLAOURJ3Ntk9 DRSoiB8hPC1w2AvfLhbMmbbpPzSF7Vd/DnXPoNKwkcs+NCdvMqwU5qdgyIxHlPOTRRSL MfAHbvJUBrOnsjw2Dd4NdQBN1JlolhEhWSoz8bzoA4+pX1urgAThxxud1CIzMA95VD+b I4V27HR99TMXGWZabSFaWNWqYLMlqhQxbPSrtq3eV/tro1y7rNrSPOIQS9sTGIeXB9Qj bvLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=iYjz6Goz5DbDNVWpD36njpM22WG4fXtOtZBFH2kqlPA=; b=SB1qdKNDvOB5Gb3bsk31a+1Stm+axSteIHu97/OpYQbRUueFBhinAqKccSRQnOtxsV bXu30zWR/U4fsaDHhEQGwJ5o6Pa7STQCuZWX17bzEkDYyM3LweNBCzR1YB+SJ2DWIVBL yFr+jPbZTH4Zf9NWsN4UL3F8B0hmXJe5gDDfAIHGoqOnTYUr8XfBPzg1Y4eNtqhPaeV9 tRUUXlDUMxUVsUCe312R3DkuhBBMrCwPz/NLsOT52DUAJZXwOpZZ7hGXvbgfj9paUn7+ 0wOIt4NGgNwSXLSqGmGKIoxI5Z2PwGPE2gwa7r+koYjPR9hafJzEGELXmzOEB4jCknow hZPg== X-Gm-Message-State: AE9vXwOdP9lGVhLtmg8kMhxr1iMvTb20TAPAWZpI1Ej25axfhUfSzZ0e3PP6SOXq+dVP8vPbRxqI8q88+twItg== X-Received: by 10.195.3.4 with SMTP id bs4mr19162894wjd.193.1474137285861; Sat, 17 Sep 2016 11:34:45 -0700 (PDT) MIME-Version: 1.0 Received: by 10.194.61.142 with HTTP; Sat, 17 Sep 2016 11:34:45 -0700 (PDT) X-Originating-IP: [77.65.95.196] From: Maciej Soltysiak Date: Sat, 17 Sep 2016 20:34:45 +0200 Message-ID: To: "cerowrt-devel@lists.bufferbloat.net" Content-Type: multipart/alternative; boundary=001a11331636466153053cb8551b Subject: [Cerowrt-devel] BBR congestion control algorithm for TCP in net-next X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Sep 2016 18:34:47 -0000 --001a11331636466153053cb8551b Content-Type: text/plain; charset=UTF-8 Hi, Just saw this: https://patchwork.ozlabs.org/patch/671069/ Interested to see how BBR would play out with things like fq_codel or cake. "loss-based congestion control is unfortunately out-dated in today's networks. On today's Internet, loss-based congestion control causes the infamous bufferbloat problem" So, instead of waiting for packet loss they probe and measure, e.g. when doing slow start (here called STARTUP) they don't speed up until packet loss, but slow down before reaching estimated bandwidth level. Cake and fq_codel work on all packets and aim to signal packet loss early to network stacks by dropping; BBR works on TCP and aims to prevent packet loss. Best regards, Maciej --001a11331636466153053cb8551b Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi,


Interested to see how BBR woul= d play out with things like fq_codel or cake.

&quo= t;loss-based congestion control is unfortunately out-dated in today's n= etworks. On
today's Internet, loss-based congestion control causes t= he infamous bufferbloat problem"

So, instead = of waiting for packet loss they probe and measure, e.g. when doing slow sta= rt (here called STARTUP) they don't speed up until packet loss, but slo= w down before reaching estimated bandwidth level.

= Cake and fq_codel work on all packets and aim to signal packet loss early t= o network stacks by dropping; BBR works on TCP and aims to prevent packet l= oss.


Best regards,
Macie= j

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