Unkillable processes

[The Unknown one]

> []
> 
> I have seen several times in the past years, processes which cannot
> be killed on UNIX. I have been told that one of two things can be

  As a side light there was the same problem under Xenix 2.5, a 
process would hang and was unable to be killed short of shutdown.

 This (I understand) was a problem with 2.5's IO drivers, when a
process had output going to a none responding device the process 
would hang. This would also happen if a process generated an 
error that printed on the console, and the console was off.

 This was fixed on Xenix 3.0.

Greg Noel
ihnp4!umn-cs!digi-g!loonam!gn