Author: rjung
Date: Wed Feb 24 11:35:58 2010
New Revision: 915757

URL: http://svn.apache.org/viewvc?rev=915757&view=rev
Log:
Add remark about reliability of System.gc() to
manager diagnostics docs.

Modified:
    tomcat/trunk/webapps/docs/html-manager-howto.xml
    tomcat/trunk/webapps/docs/manager-howto.xml

Modified: tomcat/trunk/webapps/docs/html-manager-howto.xml
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/webapps/docs/html-manager-howto.xml?rev=915757&r1=915756&r2=915757&view=diff
==============================================================================
--- tomcat/trunk/webapps/docs/html-manager-howto.xml (original)
+++ tomcat/trunk/webapps/docs/html-manager-howto.xml Wed Feb 24 11:35:58 2010
@@ -558,6 +558,12 @@
 StandardHost implementation. It will not work if a custom host is used that
 does not extend StandardHost.</p>
 
+<p>Explicitely triggering a full garbage collection from Java Code is 
documented
+to be unreliable. Furthermore, depending on the JVM used, there are options to
+disable explicit GC triggering, like <code>-XX:+DisableExplicitGC</code>.
+If you want to make sure, that the diagnostics were successfully running a 
full GC,
+you will need to check using tools like GC logging, JConsole or simlar.</p>
+
 </section>
 
 <section name="Server Information">

Modified: tomcat/trunk/webapps/docs/manager-howto.xml
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/webapps/docs/manager-howto.xml?rev=915757&r1=915756&r2=915757&view=diff
==============================================================================
--- tomcat/trunk/webapps/docs/manager-howto.xml (original)
+++ tomcat/trunk/webapps/docs/manager-howto.xml Wed Feb 24 11:35:58 2010
@@ -908,6 +908,12 @@
 StandardHost implementation. It will not work if a custom host is used that
 does not extend StandardHost.</p>
 
+<p>Explicitely triggering a full garbage collection from Java Code is 
documented
+to be unreliable. Furthermore, depending on the JVM used, there are options to
+disable explicit GC triggering, like <code>-XX:+DisableExplicitGC</code>.
+If you want to make sure, that the diagnostics were successfully running a 
full GC,
+you will need to check using tools like GC logging, JConsole or simlar.</p>
+
 <p>If this command succeeds, you will see a response like this:</p>
 <source>
 /leaking-webapp



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