Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754088Ab1CHG6b (ORCPT ); Tue, 8 Mar 2011 01:58:31 -0500 Received: from ksp.mff.cuni.cz ([195.113.26.206]:41602 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751281Ab1CHG63 (ORCPT ); Tue, 8 Mar 2011 01:58:29 -0500 Date: Tue, 8 Mar 2011 07:58:19 +0100 From: Pavel Machek To: Tianji Li Cc: rick.jones2@hp.com, Dave T?ht , sedat.dilek@gmail.com, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, bloat-devel@lists.bufferbloat.net, linux-kernel@vger.kernel.org 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) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1136 Lines: 28 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/