How to reduce JVM virtual memory usage?
Solution 1
You might be passing parameters to the JVM that make it use this much memory.
Depending on the exact error - is it a heap space problem or a permgen space problem? - passing parameters to the jvm such as -Xms512m and -Xmx512m, or -XX:PermSize=128m and -XX:MaxPermSize=128m, might solve the problem on your system.
Solution 2
Try setting jvm param -Xmx1g
to limit the usage of 1 gigabyte at most.
Admin
Updated on June 11, 2022Comments
-
Admin almost 2 years
I have a Java program to run on Solaris 10 X86 with 2GB physical memory and 2GB swap.
The program runs fine in Linux 64-bit, it consumes only about 450MB memory.
However when it runs in Solaris, it always reports OutOfMemoryError, and I noticed that right before the error happens, it was trying to use > 4GB of virtual memory, which is definitely not possible on 32-bit system.
So why does JVM tries to use that much virtual memory? Is there a way to tell JVM not to use that much virtual memory?
Thank you.
Edit:
Thanks for everyone's opinions! Here is the complete error message:
# # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (malloc) failed to allocate 32756 bytes for ChunkPool::allocate # Possible reasons: # The system is out of physical RAM or swap space # In 32 bit mode, the process size limit was hit # Possible solutions: # Reduce memory load on the system # Increase physical memory or swap space # Check if swap backing store is full # Use 64 bit Java on a 64 bit OS # Decrease Java heap size (-Xmx/-Xms) # Decrease number of Java threads # Decrease Java thread stack sizes (-Xss) # Set larger code cache with -XX:ReservedCodeCacheSize= # This output file may be truncated or incomplete. # # Out of Memory Error (allocation.cpp:211), pid=1052, tid=16 # # JRE version: 6.0_26-b03 # Java VM: Java HotSpot(TM) Server VM (20.1-b02 mixed mode solaris-x86 ) --------------- T H R E A D --------------- Current thread (0x081a3400): JavaThread "C2 CompilerThread1" daemon