Subject: Re: problems with ppp
To: Gary D. Duzan <>
From: bryan collins <>
List: netbsd-users
Date: 09/25/1995 09:58:02
> In Message <> ,
>    Curt Sampson <> wrote:
> =>> I'm trying to get a pc running netbsd 1.0 as a router
> =>> for a small network, but PPP is giving
> =>> me terrible performances, the data comes in bursts.
> =>> 
> =>> has anyone else noticed poor performance with ppp
> =>> on 1.0?
> =>
> =>I have noticed that there seems to be a latency problem when I use PPP
> =>under NetBSD on the machine I'm using now (a fairly basic 486/40 with
> =>8MB of RAM, SCSI, 16550, and an external USR Sportster 28.8). The problem
> =>does not occur under Windows with Trumpet Winsock.
>    An obvious question: have you tried adjusting the mtu? I use an
> mtu of 512 over my v.34 modem with good results except for those
> delays attributable to line noise.

I'm running at mtu of 256, it was running at 256 on a
linux machine with the same modem, same terminal server
at other end, and same configuration, just that pppd is
on netbsd now, and the performance is horrible, I get
around 300bytes/sec in transfers like ftp/http whereas they
went upto 5.7k/2.6k repsectivley with ppp on linux.


 Bryan Collins
 Coombs Computing Unit
 Australian National University
 Canberra, Australia, 0200
 Tel: (06) 249 5586
 Fax: (06) 257 1893