Java HotSpot(TM) 64-Bit Server VM warning

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