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From: tom@stl.stc.co.uk (Tom Thomson)
Newsgroups: comp.os.research
Subject: Re: OSs supporting checkpointing: looking for examples.
Message-ID: <5618@darkstar.ucsc.edu>
Date: 1 Aug 90 11:30:27 GMT
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In article <5496@darkstar.ucsc.edu> vic@cs.arizona.edu (Vicraj T. Thomas) writes:
>I am looking for examples of "traditional" operating systems (i.e. centralized
>OSs) that allowed user processes to periodically checkpoint their state so
>that, in case of a failure and subsequent recovery, they could be restarted
>from the last checkpoint.  Names of such OSs or pointers to papers that might
>contain this information would be greatly appreciated.

Were there really any operating systems that didn't have this after the
mid 60s??
 
The first one that did this that I used was English Electric's System 4
J-level OS.  Then Multijob did too.  ICT's George III had the facility,
that was a bit later.  ICL's VME has had it since day 1.   In fact the
facility is so ordinary that a modern mainframe OS without it would be
remarkable.
 
I can't point to papers; there must have been some on those early OSs, but
it's so long ago ......
 
Tom Thomson