[jbossts-issues] [JBoss JIRA] (JBTM-2203) Miscellaneous Performance Improvements

[Mark Little (JIRA)]

    [ https://issues.jboss.org/browse/JBTM-2203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12980674#comment-12980674 ] 

Mark Little commented on JBTM-2203:
-----------------------------------

The changes to Hashtable look ok (in line with recent suggestions that we evaluate that open source collections library, for instance). However, removing the ReentrantLock and replacing it with an Object ignores the reason it's there: it is a replacement for the old Mutex class that existed in older versions of TS. I'm also not sure why it appears to be a performance problem (http://www.ibm.com/developerworks/java/library/j-jtp10264/). Let's discuss before accepting this PR.

> Miscellaneous Performance Improvements
> --------------------------------------
>
>                 Key: JBTM-2203
>                 URL: https://issues.jboss.org/browse/JBTM-2203
>             Project: JBoss Transaction Manager
>          Issue Type: Enhancement
>      Security Level: Public(Everyone can see) 
>          Components: JTA
>    Affects Versions: 5.0.2
>            Reporter: Michael Musgrove
>            Assignee: Jesper Pedersen
>            Priority: Minor
>             Fix For: 5.0.3
>
>
> Jesper has identified some improvements (using his performance test tool), particularly around the use of Hashtable in TransactionImple (thanks Jesper).



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