From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-14-ewr.dyndns.com (mxout-079-ewr.mailhop.org [216.146.33.79]) by lists.bufferbloat.net (Postfix) with ESMTP id 11A272E0297 for ; Sun, 13 Mar 2011 03:27:29 -0700 (PDT) Received: from scan-12-ewr.mailhop.org (scan-12-ewr.local [10.0.141.230]) by mail-14-ewr.dyndns.com (Postfix) with ESMTP id 291F29D3D9F for ; Sun, 13 Mar 2011 10:27:29 +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-14-ewr.dyndns.com (Postfix) with ESMTP id 2DC579D3E63 for ; Sun, 13 Mar 2011 10:27:28 +0000 (UTC) Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id E959AF08F9; Sun, 13 Mar 2011 11:27:26 +0100 (CET) Date: Sun, 13 Mar 2011 11:27:17 +0100 From: Pavel Machek To: Rick Jones Subject: Re: ANNOUNCE: debloat-testing kernel git tree Message-ID: <20110313102716.GC1827@ucw.cz> References: <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> <20110308065819.GA1357@ucw.cz> <1299610096.2087.8.camel@tardy> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1299610096.2087.8.camel@tardy> User-Agent: Mutt/1.5.20 (2009-06-14) 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: Sun, 13 Mar 2011 10:27:30 -0000 Hi! > > Bandwidth varies greatly with time. On cellphone, you can go from > > 5KB/sec GPRS to 300KB/sec HSDPA and back... > > How quickly/often and does that trigger an event in the host that would > allow adjustment of the queue? I'd expect it to get fast when you leave the building, and back to slow when you re-enter. It all depends how good 3G coverage is, but seeing it change more than once a minute is not that uncommon. Event... not sure. Linux can ask for current signal strength, and I assume connection type works in similar way... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html