From mboxrd@z Thu Jan 1 00:00:00 1970 From: jamal Subject: Re: [Linux Diffserv] GRED queueing discipline and the file sch_gred.c Date: Mon, 06 Jun 2005 07:54:18 -0400 Message-ID: <1118058859.6266.126.camel@localhost.localdomain> References: <20050605221106.GB15391@postel.suug.ch> <20050606113907.GC15391@postel.suug.ch> Reply-To: hadi@cyberus.ca Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: rahul hari , diffserv-general@lists.sourceforge.net, netdev@oss.sgi.com Return-path: To: Thomas Graf In-Reply-To: <20050606113907.GC15391@postel.suug.ch> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org On Mon, 2005-06-06 at 13:39 +0200, Thomas Graf wrote: > Use a prio qdisc with RED leaf qdiscs. RED and GREDs purpose is to > calculate a marking probability and not to provide any prioritizing > schemes. Prioritization is still implicitly provided if you vary the queue lengths or the drop probabilities. For example, if you set everything to be exactly the same, and varied only the drop probability - the VQ with the highest drop probability will be less important (i.e relatively more of its packets will be dropped; recall: the drop decision is made before the packet is queued). cheers, jamal