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https://issues.apache.org/jira/browse/WSCOMMONS-556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12919617#action_12919617
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Kasun Gajasinghe commented on WSCOMMONS-556:
--------------------------------------------
Ok, That change is good.
Regarding Revision #1006309,
The method getParentOwnerDocument(), was introduced to get the
most-grand-parent node of the given node, and set the UserData object to that
node, rather than setting it to the current Node object. This is what Xerces
dom implementation does. So, we worked on it and changed NodeImpl#setUserData
and NodeImpl#getUserData accordingly. We used the above method to get the
OwnerNode. But there were some issues, and we found another almost same
solution to it. i.e. basically stopping creation of a Hashtable instance for
every Node creation. Now it creates the userData hashtable instance only
setUserData is invoked. Performance improvement by this change is bigger, as
these setUserData and getUserData will not be invoked frequently. Apparently,
this method was left behind!
> Performance improvement for axiom-dom module
> --------------------------------------------
>
> Key: WSCOMMONS-556
> URL: https://issues.apache.org/jira/browse/WSCOMMONS-556
> Project: WS-Commons
> Issue Type: Improvement
> Components: AXIOM
> Affects Versions: Axiom 1.2.9
> Environment: Java 1.5
> Reporter: Kasun Gajasinghe
> Assignee: Andreas Veithen
> Fix For: Axiom 1.2.10
>
> Attachments: axiom-dom-556-patch2.diff, axiom-perf-improvement.diff,
> FINAL-times_for_large_samples_with_changes.png,
> FINAL-times_for_small_samples_with_changes.png
>
>
> This article published [0] on April 2010, shows that Axis2 has some major
> performance issues compared to Metro and CXF. An analysis suggested that
> most of the problems were with the axiom-dom module's methods, along with
> Rampart. So, first we went on improving the axiom-dom module. Here's a patch
> for the improvements we did.
> Final assessments suggest considerable level improvement. Graphs for a
> sample run of requests with small and large samples will be added to the
> files section.
> [0] http://www.ibm.com/developerworks/java/library/j-jws14/index.html
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