scripts/rabbitmq-server contains:
ERL_ARGS="+K true +A30 -kernel inet_default_listen_options
[{sndbuf,16384},{recbuf,4096}]"
The erl manpage (http://linux.die.net/man/1/erl) says:
+A size:
Sets the number of threads in async thread pool, valid range is
0-1024. Default is 0.
The default is 0, why does rabbit use 30?
Aman