CODEWITHSUNDEEP
javajbossjvm
Joe.wang
Joe.wang

Reputation: 11791

Why is my JBoss wrapper application JVM restarted?

My OS version is Windows 7 64 bit and the JDK is 32 bit version. I started my JBoss Wrapper Application successfully, but after it ran for a while the JVM failed and restarted.

The message in the JVM dump log is:

#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 543672 bytes for Chunk::new
# 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:328), pid=5480, tid=4740
#
# JRE version: 7.0_05-b05
# Java VM: Java HotSpot(TM) Server VM (23.1-b03 mixed mode windows-x86 )
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#

I deploy 3 wrapper applications on my computer. Each of them set to a maximum JVM heap size of 700Mb.

Please help me review this problem. thanks. My questions are:

  1. How can I know current JVM allocated size?
  2. What is the reason for this problem?
  3. How can fix it? Someone recommended me to use the 64 bit JDK. Is it necessary?

Upvotes: 2

Views: 1520

Answers (2)

Ami
Ami

Reputation: 4259

If you use 32-bit JDK, the maximum heap size we can set and still have the JVM start up is about 1.2 GB.For larger heaps, we need to run a 64-bit JDK. To run 64-bit JDK, you’d also need a 64-bitoperating system running on a server that has a64-bit` CPU.

  1. Downloaded the JDK 64 bit version

  2. Set the JAVA_OPTS to

     JAVA_OPTS=-Xms1024m -Xmx1024m -XX:MaxPermSize=256m

and refer this link.

Also this is good article about memory.

Upvotes: 2

Adi Dembak
Adi Dembak

Reputation: 2536

32-bit JVM are limited to a 2GB heap maximum (-Xmx). In some operating systems, much less than that.

A 64-bit JVM will not have this limitation.

In Windows, you can follow your JVM's memory consumption with Task Manager->Processes.

Upvotes: 1

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