[rabbitmq-discuss] rabbitmq was shutdown unwanted

[Cloud DNS]

Hi,

My rabbitmq is running on Ubuntu 9.10 server 64bit.
The memory on this host is 16GB, CPU is two of Xeon E5410.
Last night rabbitmq got shutdown unwanted, the error log is:

# cat startup_err
Erlang has closed

Crash dump was written to: erl_crash.dump
eheap_alloc: Cannot allocate 4454408120 bytes of memory (of type "heap").
Aborted


After startup by hand, the current memory usage is:

# free -m
              total       used       free     shared    buffers     cached
Mem:         16077      15712        364          0         13      11437
-/+ buffers/cache:       4262      11814
Swap:         3812          5       3806


So please help why it got down? how to avoid it later?
We have rabbitmq in important application. Thanks.