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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.
|