From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x22e.google.com (mail-wm0-x22e.google.com [IPv6:2a00:1450:400c:c09::22e]) (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 70A673B2A4 for ; Sun, 3 Dec 2017 14:04:47 -0500 (EST) Received: by mail-wm0-x22e.google.com with SMTP id l141so2279805wmg.1 for ; Sun, 03 Dec 2017 11:04:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=ciIJrXKPqCgaWHCEOCY66b3t2Px8zWTY4luKMgIzy8g=; b=hK/rhxK0Rn2lQJu8futVVEppuyXTSrk1yzQASnkZv+ALONJVHV/DJcvm0GHLkxFPXs lvnznmQUrF3CHizjrIycpmvmIJaHhv6ftA8CdAyQCrG4wIDOtvLvVUVg7Oy3xEPbnZfG DjPUxJbImcEZPIcgDkyhxcOybPN7otV/SlKC0= 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=ciIJrXKPqCgaWHCEOCY66b3t2Px8zWTY4luKMgIzy8g=; b=Q41O99piXCQHu5lQ8IrFSZD7dNeYIoZPzYlY6pe1z3vuDlhroyQCkOZxcZ6JvCDM5x tgtLnL+oUvYj56GDhZmXqsX3I5eJlK1wY7xESidhmpmbTVDUfW6a3Z5Vxe0/NF5CurrZ BamH/l865eIbDZr4SX1t4rrdWjwcJImWOl4S5WvOyeb+yRZRGxqy/HTh88fpfFDfTC1a MqAbDFjf+gJY7Y+BuRvOpv0Oufs0JN0Ob5Ff7wu/3H+StMXfuy3z1qzQBr05n0qYUTQ5 aF0N2SgCVcoY1W3g16pLEG/efF2L3TY7Trp4q301cKaitKfmzPWvFYucLbDUzf+6EMjf 7kug== X-Gm-Message-State: AJaThX5eW7bzP1rnV7SIXHo2dsWbFKoQ8PtcczFjRZ48wOFQSWBTJ31q /tSsj8u52FAwyeupAvs/be0GqArn6HQI1Dj7qAYoKg== X-Google-Smtp-Source: AGs4zMZHhvjy13bPbzwfIAenTIqdVC5E6UhNd1/ThNFi6xo3taqibkyFRgMDQYItfWKz9AWIfXS6N3HcNeSPpyIGFyc= X-Received: by 10.80.242.138 with SMTP id f10mr27956045edm.6.1512327886238; Sun, 03 Dec 2017 11:04:46 -0800 (PST) MIME-Version: 1.0 Received: by 10.80.195.196 with HTTP; Sun, 3 Dec 2017 11:04:45 -0800 (PST) In-Reply-To: <87shcs9k0v.wl-jch@irif.fr> References: <4D0E907C-E15D-437C-B6F7-FF348346D615@gmx.de> <7B92DF4D-B6B5-4A64-9E10-119DCA2D4A6F@ifi.uio.no> <1512037480.19682.10.camel@gmail.com> <6b494910-1373-afb0-5b93-99b725391fb3@gmail.com> <87wp2638yo.fsf@toke.dk> <87tvxa36sn.fsf@toke.dk> <87po7ygxai.fsf@nemesis.taht.net> <87shcui3ni.wl-jch@irif.fr> <87shcs9k0v.wl-jch@irif.fr> From: Bob McMahon Date: Sun, 3 Dec 2017 11:04:45 -0800 Message-ID: To: Juliusz Chroboczek Cc: Dave Taht , make-wifi-fast@lists.bufferbloat.net, bloat Content-Type: multipart/alternative; boundary="089e082568ac71b21d055f744649" Subject: Re: [Bloat] [Make-wifi-fast] 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: Sun, 03 Dec 2017 19:04:47 -0000 --089e082568ac71b21d055f744649 Content-Type: text/plain; charset="UTF-8" My understanding per the thread is a last hop wifi link. I could be wrong though. Bob On Sun, Dec 3, 2017 at 2:35 AM, Juliusz Chroboczek wrote: > > It might be preferred to modify EDCA parameters to reduce media access > > latencies for TCP acks rather than spoof them. > > I'm lost here. What exact problem is the ACK hack supposed to work > around? Ridiculous amount of asymmetry in the last-hop WiFi link, or > outrageous amounts of asymmetry in a transit link beyond the last hop? > > -- Juliusz > --089e082568ac71b21d055f744649 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
My understanding per the thread is a last hop wifi link.= =C2=A0 I could be wrong though.

Bob
=
On Sun, Dec 3, 2017 at 2:35 AM, Juliusz Chro= boczek <jch@irif.fr> wrote:
> It might be preferred to modify EDCA parameters to reduce= media access
> latencies for TCP acks rather than spoof them.

I'm lost here.=C2=A0 What exact problem is the ACK hack supposed= to work
around?=C2=A0 Ridiculous amount of asymmetry in the last-hop WiFi link, or<= br> outrageous amounts of asymmetry in a transit link beyond the last hop?

-- Juliusz

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