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From "Rick Curtis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2292) Reduce object allocations
Date Tue, 06 Nov 2012 17:22:12 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491628#comment-13491628
] 

Rick Curtis commented on OPENJPA-2292:
--------------------------------------

Committed change to use java.util.IdentityHashMap in BrokerImpl.initializeOperatingSet to
reduce object allocations to trunk, 2.2.x, and 2.2.1.x
                
> Reduce object allocations
> -------------------------
>
>                 Key: OPENJPA-2292
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2292
>             Project: OpenJPA
>          Issue Type: Improvement
>          Components: jdbc, performance
>    Affects Versions: 2.3.0, 2.2.1, 2.2.1.0
>            Reporter: Rick Curtis
>            Assignee: Rick Curtis
>             Fix For: 2.3.0, 2.2.1, 2.2.1.0
>
>
> While doing some performance analysis we have found that we can reduce object allocations
a number of places in the code base.
> * In JDBCStoreManager we can create a simple pool(list) of CancelPreparedStatement/CancelStatement.
 
> * BrokerImpl.initializeOperatingSet, use a java.util.IdentityHashMap rather than org.apache.commons.collections.map.IdentityMap.IdentityMap.

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