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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 23518] New: - Strange Perfomance Issue, tomcat lowes down my code by factor more than 10
Date Tue, 30 Sep 2003 13:20:57 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=23518

Strange Perfomance Issue, tomcat lowes down my code by factor more than 10

           Summary: Strange Perfomance Issue, tomcat lowes down my code by
                    factor more than 10
           Product: Tomcat 4
           Version: 4.1.27
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: cgaffga@triplemind.com


i posted this issue before, and decided to run my test with another servlet
container, before saying: it a problem with tomcat.
(I'm running tomcat 4.1.27 with JDK 1.4.2 on RH8)

I have a small test class, that
- Lookup an Entity EJB
- get a property from the Bean
- serialize the bean using betwixt

I runned the classes main-method form different environments, but all with
the same jvm parameters (-server -Xms1200m -Xmx1200m).
In tomcat it slowes down dramaticly:

          |Command Line | from Servlet | from Servlet
          |             | in Tomcat    | in Jetty
----------+-------------+--------------+---------------
Lookup    |  144 ms     |  2490 ms     |   143 ms
Getter    |   17 ms     |  2843 ms     |    21 ms
Serialize |  708 ms     | 64147 ms     |   947 ms

I first thought that is has to do with all the classes in my classpath and the 
time relfection needs (especialy for betwixt). But when I added all the jars 
to the classpath of the commandline test, it slowes down only about 5%.

for code of my test classes, see atachements.

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