From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-x229.google.com (mail-lf0-x229.google.com [IPv6:2a00:1450:4010:c07::229]) (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 3C0813B29E; Tue, 19 Jun 2018 19:41:22 -0400 (EDT) Received: by mail-lf0-x229.google.com with SMTP id p23-v6so2067832lfh.11; Tue, 19 Jun 2018 16:41:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=g9YH5aDnhgaYlelA9iLq6cEGVijshzQjOQE0hVWIIcM=; b=VWvwGPmljohLahSuNeIqQkCFvzPzTznMBW7FH5grQ/c7XLfV0xIUBJvxuj0RPGRMfw xTfHIVi7P5SgwVIZVuy/b2zWDEw4XDGWguhfSgExbH40BlM41fJwt2xq8CojD//tnDCP HpZVNXXNiTCu1c/8qrdo4LWgWym7Di8Uxyh5oYkKlxU6RqSCcbbtcd8JuzuMvsfY6DXk BJiqPftSBemyjQn597E/lDIKraH51uGRJdxHXF7mwc+4uVdjWvCZRa7Ap0sTL5K/YRCK sYvhMm+oFu4gHIIPGdz8+BCtmfOT9XG3XtwOCgVshbWgL0nS2QlWOOS3nLxFipAsxdlm Mtrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=g9YH5aDnhgaYlelA9iLq6cEGVijshzQjOQE0hVWIIcM=; b=n5iI19WQwhaUK2LH8vH/kraoW9xcfrCletMlzHUa5rbYZnDvrppXW1TDy3Qbrwon0P 3DK/kxn92bSN4YG6Myuh8/ydhCu5afdyZxyPC88/ARGCxk3FHAuXmO3BRTnf/zKQazz1 E6ka42Lt0XGDaG0tXpm9x/hHxjBVaxxWW4w/e72WOC+waez71cgUlefbeLJ6FtwwJHId aejK66cPfftCEgVFXwllEuEwlIMKv8NpQ9L8jOGkD98Tjt0AKnYh5KyHt09r1SW5cSwv /1QXgCs/OaSqfWe43hTdVeJDXCMtAUgUyZLIxNzb1U4Nxkuql7pKItRGVsed0Npm2Zet GL8g== X-Gm-Message-State: APt69E1R6MA9E1CtOd5suLv+lk9CcDpBIF5Necof0deV65NvfWRAutm0 L6hPxfU8Iy6KK4OEZLP8dfU= X-Google-Smtp-Source: ADUXVKKeUBMcorsyPWTKEX+TXtAur0KljAOw/lvxaYTKVO7d+xd0jcZT2WkimZU/zmmT4IAdWjnzeA== X-Received: by 2002:a19:4e54:: with SMTP id c81-v6mr9316665lfb.110.1529451681086; Tue, 19 Jun 2018 16:41:21 -0700 (PDT) Received: from [192.168.239.105] (83-245-232-80-nat-p.elisa-mobile.fi. [83.245.232.80]) by smtp.gmail.com with ESMTPSA id a2-v6sm132834ljb.80.2018.06.19.16.41.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Jun 2018 16:41:20 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.4 \(3445.8.2\)) From: Jonathan Morton In-Reply-To: <145517.1529440447@turing-police.cc.vt.edu> Date: Wed, 20 Jun 2018 02:41:19 +0300 Cc: Dave Taht , cerowrt-devel@lists.bufferbloat.net, bloat Content-Transfer-Encoding: quoted-printable Message-Id: References: <1529339194.276412941@apps.rackspace.com> <1529361825.80979395@apps.rackspace.com> <145517.1529440447@turing-police.cc.vt.edu> To: valdis.kletnieks@vt.edu X-Mailer: Apple Mail (2.3445.8.2) Subject: Re: [Bloat] [Cerowrt-devel] Invisibility of bufferbloat and its remedies 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: Tue, 19 Jun 2018 23:41:22 -0000 > On 19 Jun, 2018, at 11:34 pm, valdis.kletnieks@vt.edu wrote: >=20 > Do we have a good cookbook on how to determine the set-rate? On DSL, the sync rates in each direction should usually be readable from = the modem; they are typically reported on the router's status page. The = advertised rate is less reliable, to say the least. On wireless links, all bets are off - even with stationary endpoints, = link capacity varies wildly over time. This needs to be solved in the = radio-modems. If it's wifi, however, a link-rate-independent solution now exists for = certain hardware, and there's nothing theoretically stopping something = similar being put into future HardMAC implementations. If we get the = choice of hardware, naturally we choose wisely. - Jonathan Morton