How to decrease the XPath evaluation time ?

Hi everyone,
I am interesting in the optimization of XPath queries evaluation time.
Does someone know what is the more efficient XPath processor which provides good performance than the other ones ? are there special tools to optimize queries in order to decrease response time ?
Thank you in advance.

mis-typed. Meant "stretch" as in push outside the normal bounds.
------ Bugs listed after this line are fixed in 5.2hf1.27
5042885 Unable to write expunge file under stress
------- Bugs listed after this line are fixed in 5.2p2
5058173 Messaging Server rewrites the index file when an expunge is issued
Both are post what you're running.
5058173 was a direct response to a large company, with several hundred thousand messages in a single mailbox, and doing client-based deletes. That single account brought the entire mailstore to a crawl.

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Hi,
Welcome to OTN.
As per the tag doc,
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herez the example.... http://www.catb.org/~esr/faqs/smart-questions.html#writewell
How To Ask Questions The Smart Way
Eric Steven Raymond
Rick Moen
Write in clear, grammatical, correctly-spelled language
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