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https://issues.apache.org/jira/browse/OPENJPA-2292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490894#comment-13490894
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Rick Curtis edited comment on OPENJPA-2292 at 11/6/12 3:29 PM:
---------------------------------------------------------------
Committed code to trunk, 2.2.x, and 2.2.1.x for the JDBCStoreManager change.
was (Author: curtisr7):
Committed code 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.x
> Reporter: Rick Curtis
> Assignee: Rick Curtis
> Fix For: 2.3.0, 2.2.1, 2.2.1.x
>
>
> 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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