-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Facchoch,
On 5/21/13 12:23 PM, fachhoch wrote: > Thanks for your replies, I use spring , hibernate , wicket. For > some of my objects I create proxy using spring, hibernate > creates proxies and injection into wicket objects uses spring > proxy. I also use groovy with spring and most of my groovy > beans are of scope prototype. > > > > <lang:groovy id="someId" > script-source="classpath:com/../..LeadAnlystReturnedAssignmentEmail.groovy" > > scope="prototype" /> I think it's memory profiler time. The good news is that you should be able to do it all for free (i.e. no cash). First, read about how to enable profiling directly in the JVM: http://docs.oracle.com/javase/7/docs/technotes/samples/hprof.html (Hint: you want the heap=dump or heap=all options) Or, you can take a heap snapshot (probably easier) using jmap like this: $ jmap -dump:live,format=b,file=heap-dump.hprof.bin [pid] (Where [pid] is of course the process id of your JVM) Once you have a .hprof file, you can either try to use HAT (which while providing lots of useful information is not terribly intuitive) or you can use Eclipse's Memory Analyzer Tool (which I've never used, but I have heard that it is fantastic). I personally use YourKit (full disclosure: YourKit gives free licenses to ASF committers so I have a free license) which I find quite good. > Whats the best way I can force tomcat to garbage collect my > permgen, I am running tomcat with -Xmx1024m -Xmx1024m > -XX:MaxPermSize=1024m Any full GC will clean PermGen as much as possible. Unless disabled, calling System.gc() should request a full GC, but it's not guaranteed. Enable GC logging to find out what is being collected and when. I suspect that if you are seeing PermGen free-space shrink all the time and full GCs are occurring (they do happen, though infrequently as they are kind of time-consuming) then you are really just filling it up with "useful" stuff. The question is: how can you reduce it so used-PermGen doesn't grow without bound. You never answered my question: do you ever actually run out of PermGen space, or are you just particularly worried about it happening? - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJRnNWaAAoJEBzwKT+lPKRY35wP/0saW8nRZBAkU0d1QyEwiZV4 sequ/mpkK9X4M0o+9Q+o9m71iM0mX1HT+juBs05mji2jmTFQQLvGaXRlUghJiXQy 3r00cPZ4ytfTGgo88JOfi2pfCf3g1S2WiyYT4eocqxwG8jDZ/9HuQYCnvK8dFk3K eVP5vyQbdypzOwc80tfiRbd7jcSwGOnVgiEFvQ/dlKYxry6u0n+Q9hAh1DHmYrz0 vtIwB0dGU+yh1NtCAg90zwa3tlKum50AX4gfpeAS9TOsboAN+GY46r+maeH+Djih RD6kj/zsZ7uIt8v3F0IvGwlzi+awsuilu6fTyNSJxOXObw5EM2Omv7NHLOLlKyvL P3C8dd5+G0nE2A2PqcIDGq41CQaitMrmlgLTnynKx3AgB3fSmn3qKSe89pKUpvK/ gqNOGq+QO8HzQmFK4D504greO5SB+5NYqoB2k+Y5b/MVlCoknVxWF1M09yuvXtr8 ZFnASSoZzbhlex06k1OD9u/5SqWe9GdNH7fm289AlywydQfYYlmts9vXnwmyvtnO Ue7jEpou9Znl+w1pHuzhmCN9h+WgT3APB/Bx1GvoJuTEeMlI/aUGcxBLXhLC348G kaougOhJsoP+GVVFFljfJXoslGtfLvtvbTe670EqPRdg1y0L5jbe308wq9Z76jea 56B1Tb3gAKy0puZwHrBs =bpRa -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
