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https://issues.apache.org/jira/browse/FELIX-2332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jed Wesley-Smith updated FELIX-2332:
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Attachment: ExtensionManager.java.patch
attached is a simple patch that reduces the scope of the sync block to the
iteration.
> Lots of contention on ExtensionManager.openConnection(URL)
> ----------------------------------------------------------
>
> Key: FELIX-2332
> URL: https://issues.apache.org/jira/browse/FELIX-2332
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Reporter: Jed Wesley-Smith
> Attachments: ExtensionManager.java.patch
>
>
> This method is synchronized, apparently to protect is the iteration through
> the m_extensions list. We have seen significant blocking in our applications
> as this lock encompasses the call to URL.openConnection as well.
> As this list is rarely changed, a copy-on-write structure would be more
> appropriate, but at the very least the, only holding the lock during the
> iteration would be far preferable.
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