Subject: Re: uucp-throughput
To: None <port-atari@NetBSD.ORG>
From: Waldi Ravens <>
List: port-atari
Date: 12/01/1995 15:18:10
Hi Leo,

> > Seriously, to me it looks like you don't have any problems
> > at all. I, on the other hand, have big problems. I don't run
> > NetBSD on my Atari right now (needed the disk for my FreeBSD-
> > box), but last time I tried (about a week ago) I got 149 cps
> > out of expected 3K cps. I also have some problems with getting
> > FreeBSD to perform well, but I get at least 2K-2K5 cps here.
> > The best performerance so far is with MiNT which constantly
> > gives me 3K cps.
> Well my results made me wonder if this wasn't some kind of configuration
> problem. My first thoughts were about the hw-handshake. I use hw-handshake
> consequently on both my modem and TT.

I think the problems are caused by high DTE<->DCE baud rates. I can't
check at the moment, but I think that > 19200 is loosing so many
interrupts, that troughput gets close to zero. Especially the SCSI
driver interrupt code seems to be blocking the machine in high IPL
for relatively long time.