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Posted to issues@commons.apache.org by "Mark Thomas (JIRA)" <ji...@apache.org> on 2009/09/11 10:23:57 UTC
[jira] Commented: (DBCP-300) remove synchronize access of
createDataSource
[ https://issues.apache.org/jira/browse/DBCP-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754042#action_12754042 ]
Mark Thomas commented on DBCP-300:
----------------------------------
Which version of commons-pool?
Which lock do you see contention on?
Locking is mostly a POOL rather than DBCP issue. A move to jdk 1.5 would allow the use of j.u.concurrent which will would be a significant change to the locking implementation.
> remove synchronize access of createDataSource
> ---------------------------------------------
>
> Key: DBCP-300
> URL: https://issues.apache.org/jira/browse/DBCP-300
> Project: Commons Dbcp
> Issue Type: Improvement
> Affects Versions: 1.2.2
> Environment: RHEL, jdk1.5.0_12, commons-dbcp 1.2.2
> Reporter: Nikhil Singh
>
> For JDK1.5 onwards we can make the DataSource volatile and start using "double checked locking" idiom. In my performance testing I have already started seeing wait time on this lock.
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