Still see not-released webapp classes even actionForm &
actionClasses are
shown. May I know why these classes are not auto-released after
webapp has
been stopped from tomcat server?
Why would GarbageCollector need to release them? Because You want it?
GC is a tricky beast and it's not listening to anybody.
Thanks.
Run jmap this morning again - some classes are released.
56 1 webapp.SearchActionForm -- released
40 1 webapp.LocalUserBean -- released
24 1 webapp.HelpActionForm -- released
16 1 webapp.ProcessLogin -- released
8 1 webapp.AuthenticationLists -- released
Not released ones:
32 1 webapp.ProcessLoginAction
16 1 webapp.filter.AuthenticatedFilter
16 1 webapp.filter.ReadWriteFullControlFilter
Should there be parameters control how long classes are released? If
yes, where are they?
All right, after did several testing. Got the following conclusion: GC
automatically release classes.
Just for future users if interests, tests:
1. jmap
Start webapp
jmap pid | grep webapp
Stop webapp
right away jmap pid | grep webapp
wait 3 mins
jmap pid | grep webapp
wait 10 mins
jmap pid | grep webapp
2. jconsole + tomcat 5.5.23 + j2se5.x
cd catalina_home/bin
set JAVA_OPTS=-Dcom.sun.management.jmxremote
catalina.sh start
jconsole &
Check "Memory-> Heap Memory Usage"
. Start webapp
. Stop webapp
Memory usages will be shown clearly.
--
Lu Ying
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