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https://issues.apache.org/jira/browse/OPENJPA-160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12475238
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Craig Russell commented on OPENJPA-160:
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I think it's great that profiling EntityManager creation resulted in this
analysis.
I'd like to know why Broker creation is so expensive. Most of the static
information should be kept in the Broker factory so configuring and looking up
stuff should be "free". The only thing that is needed for a new Broker should
be the various identity maps and such that bind the EM to the persistence
context. These artifacts should be just as cheap to create as to clear.
Until we understand why it's so expensive to create Brokers, I'd like to stay
away from pools. From my experience, trying to dynamically manage pools is
extremely difficult, and making the user responsible for tuning the pools is a
disaster waiting to happen.
> Reuse BrokerImpl objects
> ------------------------
>
> Key: OPENJPA-160
> URL: https://issues.apache.org/jira/browse/OPENJPA-160
> Project: OpenJPA
> Issue Type: Sub-task
> Reporter: Michael Dick
>
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