I posted a request a couple of weeks ago about a fairly heavily-
loaded Sun-4/280 running SunOS 4.1 that would "hang" on average
about once a day.
I only got four replies, so things pointed to a local configuration
problem, rather than an OS problem. We suspected that the problem
was related to the ALM-2 boards, and a little detective work (and
a suggestion from Greg Earle) traced it to a specific port. It
turned out that an old connection from our PACX printer port was
"tickling" the machine (we were logging PACX connections when we
were running SunOS 4.0.3). Anyway, I suspose that we got "egg on
our face"--there were nearly 500 messages on the console that said
"mcpa2: parity error ignored" for the month of April alone, and this
has been going on since late last August... :-( All I had to do
was disconnect the connector to ttyh2, and the system stayed up
for nine days! :-)
[The system hung after printing "xdballoc: out of dblks" messages
on the console, but I see that patch 100255-01 will fix this...]
Thanks to:
dal@gcm.com (Dan Lorenzini)
"Ric Anderson" <ric@cs.arizona.edu>
Stephen.Lopez@West.Sun.COM (Steve Lopez)
earle@poseur.JPL.NASA.GOV (Greg Earle)
-------------------------------------------------------------------------------
Christopher Rabson McGill University
Systems Administrator/Programmer School of Computer Science
E-mail: albion@milo.cs.mcgill.ca Montreal, Quebec
albion@musocs.uucp CANADA
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:06:13 CDT