From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-x22f.google.com (mail-qk0-x22f.google.com [IPv6:2607:f8b0:400d:c09::22f]) (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 14B9F3BA8E for ; Wed, 29 Nov 2017 11:13:49 -0500 (EST) Received: by mail-qk0-x22f.google.com with SMTP id b123so5034473qkg.7 for ; Wed, 29 Nov 2017 08:13:49 -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=L9YG6NXGSxDMo7XXKOoRRCc5emdLWMRF2bFx+Ym2I8Q=; b=JZEaOpPE49oYgzbkrVfbcjuySUMf/2DJphulj3chk2L5ZH+c3jztgPNRulXrmJbwOW Sy7I01L9aYykRDB5IUhODrmdYlKAWep2y8YsTKZ1WV9SVFxzLnoNo3oKnHLzvGORXKE9 CGTAgGFmvKj8SGsxLbpgMPq0Q4OgADh+C+d91QTEEq6bh3oaM2sUbr9C8FF4H627oe4k dyFNvHKLlYG3AfOXNQjsowQYw114DGfFBZQjPYFIciU8iPwxjjFUoUmMuW59LO145scP DZxnRxWJMYlkyzntoaEIFuSRAEoZyKUOmNX+1E43M4ng1h4PEQpxEJU/47jzpaAJ62Ud nQrg== 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=L9YG6NXGSxDMo7XXKOoRRCc5emdLWMRF2bFx+Ym2I8Q=; b=WqajUXlMRu4ZTr2rKJhBdh2ubAs1cksABStE+4ETuMP9DHImjEDB9cKnGezJDeXnhY 0IvOTBGYSWrgVk2Wr2LjYfUolf6j0XYAs2NHUl1z7I3kgD4bEfIBSquwCdTACkSNijaK moum9O7zWq/YCniu0c86uOoZhUr70+sEbQ5Cm160MXN/twQATruVseKI+8HlNGTB4v+V cjwWbEjYPU+afZwyJ75dQbirfXaQTn8cRT+LajtGsxme/zgMmt2bfgGUG8BQCpcAWFxv gQaH40Zhg1HqaEF8n2wCGUmnPm4IGhxnLHwlJYCJkAyZ8Vp+iYE33tcSyDzAss8v3d36 TSiA== X-Gm-Message-State: AJaThX4bky1GSAiszhLZYwao12UmHJ737KvG8KdI57Ym60olublvk40H My1kAFlfjFP6YcSS6YVfxQmy44867U8z7Hg6rwI= X-Google-Smtp-Source: AGs4zMaYkQvBWmVr/o60jzujuXX+TcKBv0vv9D/1ElFqX204+jgVB2sOQr3uQ7aKGHcBCpEoO63tl9dJeR/17ueOjOE= X-Received: by 10.55.91.133 with SMTP id p127mr4851067qkb.135.1511972028677; Wed, 29 Nov 2017 08:13:48 -0800 (PST) MIME-Version: 1.0 Received: by 10.140.102.179 with HTTP; Wed, 29 Nov 2017 08:13:47 -0800 (PST) Received: by 10.140.102.179 with HTTP; Wed, 29 Nov 2017 08:13:47 -0800 (PST) In-Reply-To: References: <4D0E907C-E15D-437C-B6F7-FF348346D615@gmx.de> From: Jonathan Morton Date: Wed, 29 Nov 2017 18:13:47 +0200 Message-ID: To: Luca Muscariello Cc: Mikael Abrahamsson , bloat Content-Type: multipart/alternative; boundary="001a114ea376ae15bc055f216b2c" Subject: Re: [Bloat] benefits of ack filtering X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Nov 2017 16:13:49 -0000 --001a114ea376ae15bc055f216b2c Content-Type: text/plain; charset="UTF-8" Given an RTT estimate and knowledge of the congestion window, the AckCC option could be used to target a handful of acks (maybe 4 to 10) per RTT. As usual, extra acks would be sent when loss is suspected, on ECN events, and when the push flag is set. That would be perfectly sufficient. - Jonathan Morton --001a114ea376ae15bc055f216b2c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Given an RTT estimate and knowledge of the congestion window= , the AckCC option could be used to target a handful of acks (maybe 4 to 10= ) per RTT.=C2=A0 As usual, extra acks would be sent when loss is suspected,= on ECN events, and when the push flag is set.

That would be perfectly sufficient.

- Jonathan Morton

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