RE: [reverse RFC] Add documentation for process record and replay

Jakob Engblom
2008-10-17T19:32:46Z

> > > signals? crashes? etc. Are there things that simply cannot be
> > > reproduced exactly, due to fundamental limitations of the replay
> > > target?
>
> Do you have an opinion about these concerns?

I would like to jump in here and point out that this will depend on the nature
of the target. Simics, and presumably other full-system simulation solutions,
can replay the entire IO of a machine. This includes any external IO that is
asynch to the simulator execution (such as network packets and user input).
Between machines in a simulated network of machines, replay is obviously
perfect.

If you try to do this on a live machine, it is a bit more tricky.

So this is best left to the underlying mechanism, in my experience.

Best regards,

/jakob

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Jakob Engblom, PhD, Technical Marketing Manager

Virtutech Direct: +46 8 690 07 47
Drottningholmsvägen 14 Mobile: +46 709 242 646
11243 Stockholm Web: www.virtutech.com
Sweden
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