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Bug 364885 - Reduce XPath2 performance and memory footprint
Summary: Reduce XPath2 performance and memory footprint
Status: NEW
Alias: None
Product: WTP Source Editing
Classification: WebTools
Component: wst.xpath (show other bugs)
Version: unspecified   Edit
Hardware: All All
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Jesper Moller CLA
QA Contact: Jesper Moller CLA
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Reported: 2011-11-26 04:46 EST by Jesper Moller CLA
Modified: 2011-11-26 04:46 EST (History)
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Description Jesper Moller CLA 2011-11-26 04:46:39 EST 
The space and time overhead of the XPath2 engine is much higher than for instance Xalan, as in one order of magnitude for big iteration, perhaps even with O(n log n) complexity in a few places where Xalan has O(n)...
While the current, DOM-based architecture of the engine will never be as fast as the finely tuned Xalan engine DTM engine, this gap should be reduced to at least be a constant factor, and hopefully be reduced to perhaps 2x instead of 10x.