bdoyle0182 opened a new issue, #5263:
URL: https://github.com/apache/openwhisk/issues/5263

   I think this would be better than the current duration checker method to 
query elasticsearch over a 24 hour window and removes the requirement for you 
to be using elasticsearch to fully leverage the benefit of the new scheduler.
   
   My thought is you could easily just store a key value for the average 
duration in etcd with a lease of 24 hours. And it's updated from the memory 
queue for the action every time it works through the buffer size. i.e. if the 
buffer size is 10, on every 10th new activation re-write the average action 
duration based on the current buffer average. I think you could just make a 
call from `MemoryQueue` to `DataManagementService` though I'm not sure how the 
leasing would be handled, and then you would have to write a duration checker 
to lookup the key value from data management service when the memory queue is 
restarted.
   
   This should be both more optimal resource wise in that you just store a 
single key / value and don't have to run an expensive query , reusable 
regardless of whatever activation backend you are using, and should be a better 
heuristic with the most up to date data when the queue restarts
   


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