On Fri, 6 Mar 98 22:10:12  I wrote:
>> Mar  6 20:15:40 p600 /netbsd:  zstty0: ring overrun
>[...]
>> 
>> Nothing else seems to be wrong.  I cannot detect any performance problem, 
>> and I don't see any garbage characters.  It doesn't bother me, but I'm 
>> curious if it's a hardware problem or if I have something set up wrong?
>
On Fri, 6 Mar 98 23:26, Ken Nakata, <kenn@eden.rutgers.edu> replied:
>You can try lowering the serial port speed.  I get the same thing if I
>run the modem port at 57,600bps, but I don't at all at 38,400bps.  I
>can't seem to connect to University's dial-up modem at any faster than
>28.8kbps, so the lower port speed doesn't bother me when compared to
>the intrusive kernel messages.  This is on a Q840av.
>
>Ken
>
I reduced modem port speed from 57,600 to 38,400 bps ( in 
/etc/ppp/options ).  The zstty0: ring overrun errors completely 
disappeared.  Thanks.  Incidently, the CPU is a Performa 600.  I haven't 
measured any performance numbers, but Bill Studenmund tells me that 
performance is probably improved.  I believe it.

Thanks again,

...Harlan