From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-21-ewr.dyndns.com (mxout-128-ewr.mailhop.org [216.146.33.128]) by lists.bufferbloat.net (Postfix) with ESMTP id 8C75B2E0271 for ; Tue, 15 Mar 2011 12:40:15 -0700 (PDT) Received: from scan-21-ewr.mailhop.org (scan-21-ewr.local [10.0.141.243]) by mail-21-ewr.dyndns.com (Postfix) with ESMTP id 34F482525 for ; Tue, 15 Mar 2011 19:40:14 +0000 (UTC) X-Spam-Score: -1.0 (-) X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 74.125.82.171 Received: from mail-wy0-f171.google.com (mail-wy0-f171.google.com [74.125.82.171]) by mail-21-ewr.dyndns.com (Postfix) with ESMTP id 31F142465 for ; Tue, 15 Mar 2011 19:40:09 +0000 (UTC) Received: by wyb32 with SMTP id 32so1120506wyb.16 for ; Tue, 15 Mar 2011 12:40:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:subject:mime-version:content-type:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to:x-mailer; bh=d6/a39SPjZ/eTN2rMiB91MUu5aTpkI0oJ34dBaUW1VM=; b=jAeV9OJdXFDpyUklwD0amoRHzjlAfb+Z0VqrQjMUktLPe2+y7tTu7Nefp+zXSdAh55 L0RXFSZ/k8TXk/y/FaL+DHgF0E/K1rCEG/ttBvEY4MpJf5ix9ZoW2H1oS/ddfHSW9scA yX6H+xlcq005hK/b74qNKojqpz8hA7y4COKSM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; b=siebI1pmUwaZRBJr/4iPwRpE3RPVEYqyU1VYMMY0tpyLsBAuVL6tPLpCZL3EMwPfQo s1nLuuw5I9QQgalSEwmn2T26PCnFrlNSbI8tKirkdLQQtOOSnPRbcp68q0EPmUZPBDT7 T8nRjKQPxeUnbNP6MESncKxtDTD42+DHRXS34= Received: by 10.227.207.85 with SMTP id fx21mr12831329wbb.171.1300218008403; Tue, 15 Mar 2011 12:40:08 -0700 (PDT) Received: from [192.168.239.42] (xdsl-83-150-84-172.nebulazone.fi [83.150.84.172]) by mx.google.com with ESMTPS id x1sm141896wbh.20.2011.03.15.12.40.07 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 15 Mar 2011 12:40:08 -0700 (PDT) Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: text/plain; charset=us-ascii From: Jonathan Morton In-Reply-To: <20110315183111.GB2542@tuxdriver.com> Date: Tue, 15 Mar 2011 21:40:06 +0200 Content-Transfer-Encoding: 7bit Message-Id: <29B06777-CC5F-4802-8727-B04F58CDA9E3@gmail.com> References: <4D7F4121.40307@freedesktop.org> <20110315175942.GA10064@goldfish> <1300212877.2087.2155.camel@tardy> <20110315183111.GB2542@tuxdriver.com> To: "John W. Linville" X-Mailer: Apple Mail (2.1082) Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] Random idea in reaction to all the discussion of TCP flavours - timestamps? X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Mar 2011 19:40:15 -0000 On 15 Mar, 2011, at 8:31 pm, John W. Linville wrote: > If you don't throttle _both_ > the _enqueue_ and the _dequeue_, then you could be keeping a nice, > near-empty tx queue on the host and still have a long, bloated queue > building at the device. Don't devices at least let you query how full their queue is? - Jonathan