[
https://issues.apache.org/jira/browse/JENA-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14032799#comment-14032799
]
Kristian Rosenvold commented on JENA-713:
-----------------------------------------
I did some additional measurements, and there is a clear further gain to be had
if one could avoid the StringBuffer entirely, since this kind of algorithm is
mostly memory-bound; avoiding copying all the data twice is actually a
significant part of further bumping performance. I looked into using something
like java.lang.Appendable, which unfortunately throws exceptions. I'll let this
simmer a bit further and look into the classes you mention.
> Reduce costly string operations in utility class
> ------------------------------------------------
>
> Key: JENA-713
> URL: https://issues.apache.org/jira/browse/JENA-713
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ
> Reporter: Kristian Rosenvold
> Assignee: Andy Seaborne
> Attachments: rev2.patch, testCase.patch
>
>
> The enclosed patch improves performance for all kinds of string-serialization
> of rdf graphs. The patch improves the performance of "UpdateRequest.output"
> by approx. 30%, which makes remote sparql queries a fair bit faster. The
> patch will probably improve performance across the board.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
