Hi Ken, (01)
As I've been using the version of TOPS-20 that was cloned from Doug's
machine, I've seen a lot of cases where the PDP-10 seems to freeze, or
lock up, after it has been running for several hours. It typically
occurs without any errors displayed on the TOPS-20 console. (02)
It is never the case that KLH10 itself has frozen. I can always return
to the command parser. However, the underlying PDP-10/TOPS-20
environment does not respond to any input from the console, and no
output is shown after it freezes. Also, all TOPS-20 network processes
(telnet and ftp servers) no longer respond at all. (03)
When this occurs, my only option is to return to the KLH10 command
processor and issue a quit command. (04)
The one error that I see fairly often, and it usually happens to be the
last message displayed before freezing, is: (05)
[CONLOG] ** My spy link had been snapped ** (06)
Since I also get that message even when the emulated machine is not
frozen, it doesn't seem related specifically to the freezing problems,
but I thought I'd mention it just in case. (07)
I don't really know how to get started trying to figure out why this
occurs, or even what additional information you would need to help me
figure out how to fix these problems. I presume there is some way using
KLH10 that I can give you some kind of dump that would show the state of
memory when it freezes? (08)
I'm not sure what is different than Doug's setup, but his version
appears to run for months at a time without any freezes. (09)
Any suggestions? (010)
Thanks, (011)
Jonathan (012)
_________________________________________________________________
Message Archives: http://chm.cim3.net/forum/nls-technical/
Shared Files: http://chm.cim3.net/file/work/project/nls-restore/
Community Portal: http://www.computerhistory.org/
To Post: mailto:nls-technical@chm.cim3.net
Community Wiki: http://chm.cim3.net/cgi-bin/wiki.pl?NLS_Restoration (013)
|