Keep getting this error after a few minutes of running NXT.
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x000000077c280000, 4718592, 0) failed; error='Cannot allocate memory' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 4718592 bytes for committing reserved memory.
# An error report file with more information is saved as:
Loads of free memory ~13GB, and 4G of swap. Tried increasing the -Xms and -Xmx values. Using Oracle JDK 1.7 u45 on Linux.