[GitHub] dubeejw commented on issue #2730: Reduce memory consumption for action invocation

[git]

dubeejw commented on issue #2730: Reduce memory consumption for action 
invocation
URL: 
https://github.com/apache/incubator-openwhisk/pull/2730#issuecomment-332299004
 
 
   Profiling of action invocations using the changes provided in this PR and 
without these changes. The action is a 34 MB zipped Node action. 
   
   
   First action invocation is a cache miss causing the controller to fetch the 
action from the DB. This means the code associated with the action is download 
into the controller causing a spike in the used heap. Garbage collection is 
then performed to lower the used heap. The same action is then invoked three 
times without the previous heap increase since the action without the code 
property is cached, which does not cause a fetch from the DB.
   
   With WhiskActionMetadata changes:
   <img width="509" alt="screen shot 2017-09-26 at 2 46 09 pm" 
src="https://user-images.githubusercontent.com/11520887/30878095-c7623960-a2c9-11e7-9cc0-f17af3120f67.png";>
   
   Without WhiskActionMetadata changes:
   <img width="506" alt="screen shot 2017-09-26 at 3 19 09 pm" 
src="https://user-images.githubusercontent.com/11520887/30879947-fd223fa0-a2ce-11e7-88fe-39fa5ee24ff4.png";>
   
   
 
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