问题
I want to run a memory intensive package on a web server.
Current computer's settings are... Windows 7 64 bit 64-bit JVM RAM: 8GB
When I try to run eclipse with -Xms1024m -Xmx2048m -XX:MaxPermSize=256m
I get:
Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine.
From posts that I read, it seems like I should be able to use more than 4GB of memory. When I ran the code, I was able to max out the memory at -Xmx1200M and still be able to run the code. But for what I want to accomplish, I need to use more memory. How can I increase the memory size here?
Thank you everyone. The issue was that I was using a 32-bit version of JDK. I was able to run memory at 2GB after switching the JDK to the 64 bit version. Thanks!
回答1:
The problem was that I was using a 32-bit version of JDK.
Thank you, and thank you to Mister Smith for pointing out that I should answer it and mark it as solved.
来源：https://stackoverflow.com/questions/7276381/want-to-increase-java-heap-size-to-4gb-physical-memory-8-gb-jvm-64-bit