From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 727C13BA8E; Sun, 3 Dec 2017 05:35:16 -0500 (EST) Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/75695) with ESMTP id vB3AZEBN025528; Sun, 3 Dec 2017 11:35:14 +0100 Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id C6307EC93E; Sun, 3 Dec 2017 11:35:14 +0100 (CET) X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id seBnM6ddBSzH; Sun, 3 Dec 2017 11:35:13 +0100 (CET) Received: from trurl.irif.fr (unknown [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 06470EC87E; Sun, 3 Dec 2017 11:35:12 +0100 (CET) Date: Sun, 03 Dec 2017 11:35:12 +0100 Message-ID: <87shcs9k0v.wl-jch@irif.fr> From: Juliusz Chroboczek To: Bob McMahon Cc: Dave Taht , make-wifi-fast@lists.bufferbloat.net, bloat In-Reply-To: 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> User-Agent: Wanderlust/2.15.9 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Sun, 03 Dec 2017 11:35:14 +0100 (CET) X-Miltered: at korolev with ID 5A23D362.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 5A23D362.000 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/ X-j-chkmail-Score: MSGID : 5A23D362.000 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham X-Mailman-Approved-At: Sun, 03 Dec 2017 07:40:29 -0500 Subject: Re: [Make-wifi-fast] [Bloat] benefits of ack filtering X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Dec 2017 10:35:17 -0000 > 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