Subject: ms0 overrun and other lockups
To: None <port-sun3@NetBSD.ORG>
From: Scott Ellis <scotte@netbsd.warped.com>
List: port-sun3
Date: 03/03/1997 10:45:40
I've recently been using my 3/110 as an xterminal, and have noticed
some off 'pauses' occuring.  I'm running current (bins are from Feb 14,
kernel is from Mar 2).

The behaviour I'm seeing is that at random intervals, the machine seems
to just pause, as though it's stuck waiting for something.  If I
happen to be typing a character at the time, the character repeats until
the machine 'unsticks'.  If I was moving the mouse, the pointer freezes,
and I get a message on the console about '/ms0 input overrun'.  I've found
that I can often unlock the machine by sending input via the network
(that is, typing in a shell opened from another machine).  I haven't noticed
these pauses lately over ttyb (where I have a terminal connected), although
I did get similar pauses on ttyb in early Jan.

During the 'pauses', the machine is not busy, is not swapping, or doing
any other task, and the pauses seem to occur at random intervals.

Any ideas where to look to figure this out?  I'm stumped as to where
to even begin looking for a problem.

-- 
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