dgrove-oss opened a new issue #4196: memory-based limit on concurrent 
invocations
URL: https://github.com/apache/incubator-openwhisk/issues/4196
 
 
   Because of the switch to memory-based allocation of invoker slots, we also 
need the ability to limit users based on the amount of memory concurrently used 
by their running actions.  A user that wants to run 200 concurrent 128MB 
actions is significantly (16x) easier for an OpenWhisk deployment to satisfy 
than a user that wants to run 200 concurrent 2GB actions. 
   
   The implementation would parallel the current invocation-based counting of 
concurrent actions (but would increment/decrement by the action's requested 
memory instead of counting all actions equally as 1).
   
   We should probably implement a separate memory-based concurrency limit 
initially, then consider whether we actually need both count-based and 
memory-based concurrency limits and perhaps deprecate the count-based limit.
   

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