From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-21-ewr.dyndns.com (mxout-041-ewr.mailhop.org [216.146.33.41]) by lists.bufferbloat.net (Postfix) with ESMTP id A97672E0545 for ; Mon, 7 Mar 2011 22:58:34 -0800 (PST) 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 4A1D074BA for ; Tue, 8 Mar 2011 06:58:33 +0000 (UTC) X-Spam-Score: 0.0 () X-Mail-Handler: MailHop by DynDNS X-Originating-IP: 195.113.26.206 Received: from atrey.karlin.mff.cuni.cz (ksp.mff.cuni.cz [195.113.26.206]) by mail-21-ewr.dyndns.com (Postfix) with ESMTP id C96237399 for ; Tue, 8 Mar 2011 06:58:28 +0000 (UTC) Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 8A1D1F0568; Tue, 8 Mar 2011 07:58:27 +0100 (CET) Date: Tue, 8 Mar 2011 07:58:19 +0100 From: Pavel Machek To: Tianji Li Subject: Re: ANNOUNCE: debloat-testing kernel git tree Message-ID: <20110308065819.GA1357@ucw.cz> References: <20110225222210.GA3618@tuxdriver.com> <87fwr9jxya.fsf@cruithne.co.teklibre.org> <8739n9ii7z.fsf@cruithne.co.teklibre.org> <87tyfph2az.fsf@cruithne.co.teklibre.org> <1299176168.2157.14.camel@tardy> <4D6FEFD4.9010608@nuim.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4D6FEFD4.9010608@nuim.ie> User-Agent: Mutt/1.5.20 (2009-06-14) X-Mailman-Approved-At: Tue, 08 Mar 2011 05:41:59 -0800 Cc: bloat-devel@lists.bufferbloat.net, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, sedat.dilek@gmail.com X-BeenThere: bloat-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: "Developers working on AQM, device drivers, and networking stacks" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Mar 2011 06:58:35 -0000 On Thu 2011-03-03 13:45:24, Tianji Li wrote: > > > On 03/03/2011 12:16 PM, Rick Jones wrote: > >>For wireless routers and cable home gateways especially, this research > >>shows that the total un-managed buffers in your system should be less > >>than 32. > > > >Would it be a good thing to start describing these queues not so much in > >terms of packets but in terms of delay (or bandwidth X delay)? > > > > The unit of bandwidth is something like Mbps, that of delay can be > second, so bandwidth X delay --> Mb, which is the unit of packet > size. So both packets and delay should have the same effect for > sizing buffers. Bandwidth varies greatly with time. On cellphone, you can go from 5KB/sec GPRS to 300KB/sec HSDPA and back... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html