How much performance increase with streaming XPath

Question

Just read the article "Streaming XPath Parser for WSO2 ESB". I was wondering how much the performance increases with this implementation compared to the previous implementation.

Are there any numbers available on this?

Answer 1

I think you will have to make measurements for your specific use case (and you will have to decide what to compare against: different XPath implementations can differ in performance by a factor of 100). Using a technique like streaming will typically benefit some queries much more than others; and the benefits will also depend greatly on document size. It also depends whether you are looking for time savings or memory savings.

Caveat: I don't know anything about this specific implementation, but it was an interesting article.

Answer 2

The objective of Stream XPath,where AXIOM will not consume the unwanted part of the steam, thereby reducing the memory and time taken to open an XML document as a Java object model.Basically we have observed it will increase the performance So If you carefully analyse the statistics e.g for CBR scenario in the Performance round 6.5 article [2], clearly it shows that it has doubled the performance compared to previous ESB versions.

[1]http://wso2.org/library/articles/2013/01/streaming-xpath-parser-wso2-esb [2]http://wso2.org/library/articles/2013/01/esb-performance-65