On Dec 8, 2006, at 8:37 AM, Rob Lockstone wrote:
On Dec 8, 2006, at 00:10 , sksamuel wrote:
Here is an interesting one,
If I package my application up as a JAR and put it in WEB-INF/lib
then I get
memory leaks in the perm gen space as none of the Class objects are
garbage
collected. This is easily re-producable every time. If however I
put the
application's .class files inside WEB-INF/class and don't bother
with the
JAR then it will work fine, no memory leaks, runs forever.
Any ideas on what I'm doing wrong or if there is some subtle issue
with
classloaders here that I don't understand ?
If what you describe is really happening, it's gotta be nominated for
the Bizzaro Bug of the Month or something. :-)
You're sure the perm space is being exhausted? Are you using -XX:
+PrintGCDetails or something similar to see the results of gc's on
the perm space?
Also, very important, what environment are you running? Versions of
OS, Resin, Java?
This sounds like the JDK/introspection/debug perm-gen GC issue (which
is really weird). It's a JDK bug, which appears to be fixed in the
most recent JDKs.
-- Scott
Rob
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