On Thu, 2 Apr 1998, Roger Fischer wrote:

> I've got my Mac SE/30 up and running ethernet and IPNAT between
> it and my Centris.  Everything is working great, but the other
> night I saw something that I'm curious about.
> 
> I was FTP'ing from my Centris and getting a 1 meg file.  I saw
> this message on the NetBSD SE/30
> 
> Apr 2 00:01:07 scooter /NetBSD: zstty0: 2 silo overflow S, 0 ibuf floods
> Apr 2 00:02:07 scooter /NetBSD: zstty0: 1 silo overflow S, 0 ibuf floods
> Apr 2 00:03:07 scooter /NetBSD: zstty0: 1 silo overflow S, 0 ibuf floods
>                                                    ^
>                                            might be overflows,
>                                            not overflow s,
>                                             can't read my own
>                                                 writing...

Should be                                         overflows
                                                  overflow
                                                  overflow
(the code knows how to pluralize in English). :-)

> Anyway, I'm just assuming that SE/30 doesn't have the horsepower
> to keep up IPNAT on a long steady download.  Download was cruising
> along at approx 2.8-3k/second on a 33.6 modem.  Mail, Telnet,
> Web-browsing all seem to work great.

I think you're right. Since every character received generates an
interupt, there's not much we can do. I'm actually surprised/pleased that
it's working as well as it is. :-)

I'm not sure that there's much you can do, other than possibly do the
transfer to the SE/30 and then to the other machine.

> Is this anything to be worried about?
> Does anybody have a good source for a cheap (used?) 68040 that I
> can put in my Centris 610 so I can put NetBSD on that?  ;-)

Given that Apole only promised 9600 baud, I think it's fine. :-)

I'm not sure about real 040 suppliers. :-(

Take care,

Bill