Rick,
performance is one of those fuzzy areas. We never know what can be done.
I'd rather not just let this sit as a 10X-20X degredation over .NET. Please
open an issue in JIRA (not bugzilla anymore) http://nagoya.apache.org/jira/
The project is XalanJ2, the issue type is probably Improvement. I see that
there are three bugs that you opened in bugzilla that were migrated from
bugzilla to JIRA, but not this one. Your JIRA ID should be the same as your
old bugzilla ID, although the password is new. You may need to click the
"forgot password" to get the new password mailed to you.
Please attach relevant XML/XSL and Java code.
----------
Brian Minchau
XSLT Development, IBM Toronto
e-mail: [EMAIL PROTECTED]
"Rick Bullotta"
<[EMAIL PROTECTED]
ghthammer.com> To
<[EMAIL PROTECTED]>
12/15/2004 09:06 cc
AM
Subject
The ever popular Xpath peformance
Please respond to questions..
xalan-dev
After weeks of scouring the newsgroups and Googling, and much
experimentation, we remain absolutely perplexed as to how to get better
Xpath performance from Xalan (mostly in selectSingleNode and selectNodeList
operations). In our case, the source will always be a Xerces DOM.
We're experiencing a roughly 10X-20X degradation in performance relative to
comparable code using the Microsoft Xpath evaluation functions in .NET.
We're about to consider trying Dom4J or JDOM just to see if we can get some
better performance, but we'd hate to give up now.
We have tried CachedXPathAPI, but its usage is quite unclear (and how the
DOM/DTM gets cached is still unclear). Low level API's are certainly an
option, but we're in the dark as to appropriate usage.
Consider this a plea for help and guidance!
Happy holidays to all,
Rick Bullotta
CTO
Lighthammer Software (http://www.lighthammer.com)
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