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From Apache Wiki <wikidi...@apache.org>
Subject [Tomcat Wiki] Trivial Update of "MemoryLeakProtection" by SylvainLaurent
Date Mon, 21 Feb 2011 21:05:32 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Tomcat Wiki" for change notification.

The "MemoryLeakProtection" page has been changed by SylvainLaurent.
http://wiki.apache.org/tomcat/MemoryLeakProtection?action=diff&rev1=14&rev2=15

--------------------------------------------------

   * [[http://www.eclipse.org/mat|Eclipse Memory Analysis Tool]]
  
  Related issues
-  * <<Anchor(48837)>>[[https://issues.apache.org/bugzilla/show_bug.cgi?id=48837|48837]]
- Memory leaks protection does not cure leaks triggered by JSP pages code
   * <<Anchor(49159)>>[[https://issues.apache.org/bugzilla/show_bug.cgi?id= 49159|49159]]
- Improve ThreadLocal memory leak clean-up
   * [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4957990|Sun bug 4957990]] - In some
cases the Server JVM fails to collect classloaders. According to [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4957990|this
page]] it should have been fixed with java 6u16 but actually it was not. It seems to be fixed
with 6u21 (documented [[http://download.java.net/jdk6/6u21/promoted/b03/changes/JDK6u21.list.html|here]]
and verified by the author of this wiki page).
   * [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6916498|Sun bug 6916498]] - An exception
can keep a classloader in memory if the stack trace that was recorded when it was created
contains a reference to one of its classes. Some fixes have been made in tomcat (see [[https://issues.apache.org/bugzilla/show_bug.cgi?id=50460|BZ
50460]]), but some library or JRE code may still create a leak that is undetected by tools
because of this JVM bug.

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