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From "Vadim Gritsenko" <>
Subject Pooled XSLT TransformerHandler
Date Fri, 01 Feb 2002 03:35:35 GMT

Are there any issues if javax.xml.transform.sax.TransformerHandler is
pooled (except increased memory utilization)? I did some quick prototype
and results are encouraging:

1. Current CVS
  Requests per Second:          11.32

  Page                            Hits      TTFB Avg  TTLB Avg
  GET /cocoon/sub/xsp-cocoon      3400      581.52    850.56  

2. Pooled XSLT TransformerHandler
  Requests per Second:          93.88

  Page                            Hits      TTFB Avg  TTLB Avg
  GET /cocoon/sub/xsp-cocoon      28147     77.38     77.91   

Test was executed for the 10 minutes. Throughput increased to 829% of
original, page processing time decreased to the 13% of original time.

PS: Remember that these results are for the very simple XSLT stylesheet
(see sitemap). On more complex stylsheet - this change will have smaller


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