From owner-freebsd-net Fri Jan 29 00:45:26 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id AAA14824 for freebsd-net-outgoing; Fri, 29 Jan 1999 00:45:26 -0800 (PST) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from alpo.whistle.com (alpo.whistle.com [207.76.204.38]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id AAA14805 for ; Fri, 29 Jan 1999 00:45:22 -0800 (PST) (envelope-from julian@whistle.com) Received: (from daemon@localhost) by alpo.whistle.com (8.8.5/8.8.5) id AAA04745; Fri, 29 Jan 1999 00:36:53 -0800 (PST) Received: from s204m82.isp.whistle.com(207.76.204.82) via SMTP by alpo.whistle.com, id smtpdlG4742; Fri Jan 29 08:36:43 1999 Date: Fri, 29 Jan 1999 00:36:43 -0800 (PST) From: Julian Elischer X-Sender: julian@s204m82.isp.whistle.com To: Poul-Henning Kamp cc: net@FreeBSD.ORG, Archie Cobbs Subject: Re: netgraph... In-Reply-To: <2105.917596839@critter.freebsd.dk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Fri, 29 Jan 1999, Poul-Henning Kamp wrote: > > >It is much easier to believe that nodes sending status/control information > >between themselves might do it a lot quicker and more often than > >humans running ngctl. One node might be 'tuning' another in such a way > >that there are many (hundereds?) of these messages per second? > > I fail to come up with an example right now. Opening and closing VCs > is the best I can come up with, and most protocols deliberately make > sure that only happens on a 10s of seconds/minutes time scale (for > accounting reasons). I have theorised about using a set of nodes for such things a flow-control on sub-pipes, where the flow information is passed back and forth, setting up high and low watermarks. In a bursty high capacity medium with several 'subchannels' being controlled, I can imagine these needing to be in thorder of 10s per second. I also am sure that I don't have any idea what this stuff will be used for in teh future if it's successful. I can imagine for example flowcontrol messages toggling a CTS line as a buffer upstream nears a highwatermark. I have two "Interesting" nodes under development which I hope to complete over the weekend. julian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message