markusthoemmes opened a new pull request #2360: Choose target invoker based on 
specific invoker load.
URL: https://github.com/apache/incubator-openwhisk/pull/2360
 
 
   Currently, the loadbalancer advances from one Invoker to another after a 
fixed amount of invocations, which isn't aware of any load in the system 
causing suboptimal behavior.
   
   This only advances away from the home invoker of an action (determined by 
hash) if that home invoker is "heavily" loaded. We advance further if the next 
chosen invoker is busy and so forth. If we arrive at the home invoker again, 
the system is completely loaded and we force schedule to the home invoker. Step 
sizes are determined by prime numbers and also chosen by hashing to prevent 
chasing behavior.
 
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