Date: Tue, 17 Feb 1998 22:25:33 +0100 From: Eivind Eklund <eivind@yes.no> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it>, Eivind Eklund <eivind@yes.no> Cc: plm@xs4all.nl, freebsd-current@FreeBSD.ORG Subject: Re: cvs commit: src/usr.sbin/ppp command.c datalink.c datalink.h defs.h vars.c vars.h Message-ID: <19980217222533.63111@follo.net> In-Reply-To: <199802171950.UAA01120@labinfo.iet.unipi.it>; from Luigi Rizzo on Tue, Feb 17, 1998 at 08:50:15PM %2B0100 References: <19980217203309.39822@follo.net> <199802171950.UAA01120@labinfo.iet.unipi.it>
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On Tue, Feb 17, 1998 at 08:50:15PM +0100, Luigi Rizzo wrote: > there are a few things I would like (eventually) to go into ppp, > so i am just throwing a few ideas here... i don't have the time to work > on these things now, although I might look at them in the summer. > > * Fair Queueing support (i don't think it is already there, just a > priority for interactive packets ?) > the code could be grabbed from the ALTQ package recently announced on > this list. Not necessarily the full package, just the FQ stuff could > help; > This is on my list of things that must be done. I can't guarantee when I'll come to it, but if others don't take of them, I will. > * "preemption" . > I don't think ppp allows this, but perhaps it could be possible to > implement preemption of long packets (or transfer them in smaller > 'cells') so that interactive traffic does not suffer exceedingly > large delays... is there any work on this ? > (the alternative -- lowering MTU -- is not that attractive i > believe, since it causes some overhead even if the last hop has > proper header compression) I'm not certain how this can be handled. A possibility might be to fragment the packets for just that connection, ie, in effect lower the MTU for just part of the use. I believe some smart heuristics would be necessary to make this work well. Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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