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Posted to dev@tomcat.apache.org by bu...@apache.org on 2011/01/01 00:18:53 UTC

DO NOT REPLY [Bug 27717] very slow in JSTL 1.1

https://issues.apache.org/bugzilla/show_bug.cgi?id=27717

Jeremy Boynes <jb...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #24 from Jeremy Boynes <jb...@apache.org> 2010-12-31 18:18:43 EST ---
Fixed in revision 1054175
Refactored XPath support to use Xalan low-level APIs directly.

Performance for large data sets scales with n^2 due to Xalan constructing a
backing array for the iterator with a monotonic block size causing multiple
calls to System.arrayCopy(). On a 2006 generation MacBookPro iterating 100000
elements takes ~1600ms.

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