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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9496) ArrivalWindow should use primitives
Date Sat, 18 Jul 2015 15:51:04 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Yeschenko updated CASSANDRA-9496:
-----------------------------------------
    Fix Version/s:     (was: 3.x)

> ArrivalWindow should use primitives 
> ------------------------------------
>
>                 Key: CASSANDRA-9496
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9496
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: sankalp kohli
>            Assignee: sankalp kohli
>            Priority: Minor
>             Fix For: 2.0.16, 2.1.7, 2.2.0 rc2
>
>         Attachments: 9496.txt
>
>
> 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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