From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sonic301-35.consmr.mail.ne1.yahoo.com (sonic301-35.consmr.mail.ne1.yahoo.com [66.163.184.204]) (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 2F1C03B2A4 for ; Thu, 21 Jun 2018 12:29:23 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rogers.com; s=s2048; t=1529598562; bh=ve98QR/tmq7Ve+SKfTPb6KuSfNhz/Oq8Towjn539BfQ=; h=Reply-To:Subject:To:References:From:Date:In-Reply-To:From:Subject; b=QLEdQc/SFhkbyYbwQxs0VJAO4Vh++H+BnNcwIfQhzmKVgvAPMmTiUJXmBjOmJOLGyuAK45hcXgxKCbmYmF9W+6QEGsF6CY4iZyp+9i48Rh6hhPT2KiCY+5wW26Rvjn+eSL0D1D/AMXXzXc6u8hdJfV8vl1U7SIjfJycZwfpkyPLoJl9t6AGDGgujKFAxSJQpeJJwAF+YTVWNLZJ5lTQ0cHgz9+4xLO+v9eujD9JTvmKA1jgwkF9L/Jxl7F+ce48STlwcLoQ0oL6a05gPoTtrv0oVh3KbP3/wq8KLr2Eph855Eyhuh5ABLkK/zud1cQske9TXuxjMELLD0oZLiP7FSw== X-YMail-OSG: 9LkYuQ0VM1m16NG_n5l_Q1Bx8CXIEz57nssbQsR7XQZPo.1UKG4rWDBNbVj1b3O BMo.TKhs_rJWbeBBwx_MRz0vPD.a2hokLZers4O0yPYaDvopTp5CedpaZFGojS9dlkYc_wB7TdJA 7QaIYhcXqOxKjbfg6fr6RdEqLSbe3a_hkvLqjA_.lFK.inxKS58zvZlUSpbI2tNqF60b4_3wg5yK _JqAdAVjxW_.oiSUWSzMEFjsrcpxIC0lvnFpRsq6TC6N1cSTELB.zr4xzzE5DW6uBmPtpRKI0Ivg UUURAIBx1nJ8j5ZQBGPDfZa_hosrBJrBbPM.qxEsydc3JbjACYHwZ6bYSmK5rKpfO62FC4rjPQ.3 2FrKXRboUgYjcLJgQtBloYEHfO2LR9evcF1ERfXsheOlxadMCHGHB1W5.vU8fQE2vJ9mjv_6t6np IplWFTzdP7vhL8wNJba.pMdw2VHU0h.tUEgCNR43DM7YnziH1eoqoTMQ4F6KMkAY6bqWz9bWQNx4 9JkJ5pa0uYRsj3Y59vr7xNYWUfxj3BKI_ggXy2wN7fs6bdxZZFukjHhfwASscX4.NKkDp03srt6B l3uuTCOJoIV4rHffkshaoHtp8n.Vi0r7BrIW6jMmuoqZy.4St25v8bKkQxn7n6QdW_SgdT7xXjeS CCAClC_YsU9fgGEY0tZF4g.yg_8._2g5fWQtOnd9hibpI.coWoFvdNLlGZKMw5VKzwAYQvZS6QDy fTUJjblGzLBPAl7.i.b1Cc6p3C_5W.slNfaB_IpNwXhN3fmEL.znINJRsSmo.FWhcZz3SmcpIS7M 46dKyRQj2PWZHqgF82RsjHGYZrpFYJguNLyuoUG_hcVbEuRoddTdH0ppAkhH47bdRGwtwIGHJL3b Jvhs6t.ndGtuNXtR5iFKrfq3fFy9qKEnRCbGH_HQjH3tlorJTXhMcc9TSPtFPCQX0uQnJuwWQtb1 Gahx.Czue96SCYwnJlbPUal1ICT5wk6BBceGFRRENMhMS Received: from sonic.gate.mail.ne1.yahoo.com by sonic301.consmr.mail.ne1.yahoo.com with HTTP; Thu, 21 Jun 2018 16:29:22 +0000 Received: from asrd.casalemedia.com (EHLO [10.4.10.183]) ([192.139.80.1]) by smtp413.mail.ne1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID e3f27313f0654e913aa0071cd006f9ca; Thu, 21 Jun 2018 16:29:19 +0000 (UTC) Reply-To: davecb@spamcop.net To: bloat@lists.bufferbloat.net References: <8736xgsdcp.fsf@toke.dk> <838b212e-7a8c-6139-1306-9e60bfda926b@gmail.com> From: David Collier-Brown Message-ID: <870e30f7-05bd-7d4d-e3d7-937f815a74c4@rogers.com> Date: Thu, 21 Jun 2018 12:29:18 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Subject: Re: [Bloat] lwn.net's tcp small queues vs wifi aggregation solved 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: Thu, 21 Jun 2018 16:29:23 -0000 On 21/06/18 11:18 AM, Dave Taht wrote > This is a case where inserting a teeny bit more latency to fill up the > queue (ugh!), or a driver having some way to ask the probability of > seeing more data in the > next 10us, or... something like that, could help. Hmmn, that sounds like a pattern seen in physical switching systems: someone with knowledge that another car is coming (especially if it's  unexpected) waves a flag at the dispatcher to warn them to leave space and avoid a nasty ka-thump and the extra strain on the couplers (;-)) --dave -- David Collier-Brown, | Always do right. This will gratify System Programmer and Author | some people and astonish the rest davecb@spamcop.net | -- Mark Twain