Java HotSpot(TM) 64-Bit Server VM warning

Question

I have a tomcat as my web-server, it stopped down automatically with the given Error -

Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00007f16a8405000, 12288, 0) failed; error='Cannot allocate memory' (errno=12)

i need to figured it out what actually happened ? and what warning does mean ?

question from:https://stackoverflow.com/questions/31002612/java-hotspottm-64-bit-server-vm-warning

Answer 1

There is insufficient memory for the Java Runtime Environment to continue.

Native memory allocation (malloc) failed to allocate xxxxx bytes for committing reserved memory.

Possible reasons:

1. The system is out of physical RAM or swap space
2. In 32 bit mode, the process size limit was hit

Possible solutions:

1. Reduce memory load on the system
2. Increase physical memory or swap space
3. Check if swap backing store is full
4. Use 64 bit Java on a 64 bit OS
5. Decrease Java heap size (-Xmx/-Xms)
6. Decrease number of Java threads
7. Decrease Java thread stack sizes (-Xss)
8. Set larger code cache with -XX:ReservedCodeCacheSize=

If you are on Java 8 or later, please also see this question: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize