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Posted to commits@cassandra.apache.org by "sankalp kohli (JIRA)" <ji...@apache.org> on 2015/05/28 03:14:17 UTC

[jira] [Created] (CASSANDRA-9496) ArrivalWindow should use primitives

sankalp kohli created CASSANDRA-9496:
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             Summary: ArrivalWindow should use primitives 
                 Key: CASSANDRA-9496
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9496
             Project: Cassandra
          Issue Type: Improvement
            Reporter: sankalp kohli
            Priority: Minor


While doing a heap analysis of a large cluster(1000+), I found that majority of the strongly referenced objects on heap are coming from ArrivalWindow. 
Currently ArrivalWindow uses BoundedStatsDeque which uses LinkedBlockingDeque<Long> deque. 
For a cluster of size 1000, it will translate into 2 million objects. 

We can use primitives and use an array of long(long[]). This will cut down on the number of objects and the change is not that big. 
  



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