[jboss-user] [Installation, Configuration & Deployment] - VM-Size in Windows task manager increases constantly

I got a big problem. Please give me some hints how to solve it. I read a lot of threads about it here, but no solution. My system is: P IV, 4GB mem (no swap to not delay the problem) Windows 2003 Server x64 SUN JDK 1.5.0-07 for AMD x64 JBoss 4.04 My own stateful session bean and two servlets of my own JBoss/JVM parameter: set JAVA_OPTS=%JAVA_OPTS% -Xms2048m -Xmx2048m set JAVA_OPTS=%JAVA_OPTS% -XX:PermSize=150m -XX:NewRatio=3 My problem is: To stress test my bean I create approximately 600 instances. One hour after the start the windows task manager tells me a VM-Size of 2.5 GB. That?s okay. Visual GC 3.0 tells me the following: PermSize: 50MB (ok) OldGen: 300MB (ok) (after 2 collections) Survivor ½: 130MB (ok) Eden: 170MB (ok) Everything is okay. After 30 hours Visual GC: PermSize: 50MB (ok) OldGen: 300MB (ok) (after 500 collections) Survivor ½: 8MB (interesting, but still ok for me) Eden: 33MB (interesting, but still ok for me) The Problem is now windows task manager for java.exe MemUsage: 1.6GB (ok) PeakMemIsage: 1.6GB (ok) VM Size 3.5GB (and increasing: very big problem) When VM-Size reaches 3.8GB, java.exe crashes. IMHO JVM?s internal heaps are okay but there must be an internal error in its memory management. It?s not that I want memory returned to the OS but the JVM should detect a lack of fresh memory and not allocate anymore. I also think that there is no benefit in changing Xms Xmx Xss (the well known switches). I tried without success. Is it possible that this is a special problem of the x64 JVM? With 32 Bit I run onto other limitation. Any help is welcome Thanks in advance. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3959045#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...