An error occurred while saving the commentBrad Mercer commented
I guess because most calculations do not depend on the previous value OSIsoft is not too concerned about this. There would also be a delay in real-time calculations if it were to wait for the backfilling to complete before starting. That said, I'm in favor of being able to select the option for backfilling to be completed prior to starting real-time calculations if it can be done on a per analysis or analysis template basis. I don't know if I'd want a global option to do this for all calculations due to the above.
We are starting to implement performance counters and statistics for PI Web API.