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From Mikolaj Rydzewski <>
Subject Tomcat uses more and more PermGen space
Date Mon, 03 Jan 2011 13:48:48 GMT

 Hi all,

 While investigating OOM issue I discovered, that Tomcat instantly uses 
 more and more PermGen space.
 At this moment I have access to one environemnt only, this is:

 Windows XP
 Java 1.6.0_22
 Vanilla Tomcat 6.0.21

 I use jconsole to monitor PermGen space and I can observe that it 
 slowly increases. There are no other webapps deployed, nor any requests 
 to tomcat. Is it normal?

 I started to look at this, because customer reported, that with his 
 setup, PermGen doubled its size within 3 hours! He runs lambda probe 
 webapp and another webapp which makes heavy use of XStream library. I 
 googled and found that there are reports related to XStream and PermGen 

 I wonder if anyone encountered anything similiar?

 Mikolaj Rydzewski <>

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