kill -3 and JRockit

in your domain home, create a file ctrlhandler.act

set_filename filename=/tmp/output.txt
print_class_summary
heap_diagnostics
print_threads
timestamp
jrarecording nativesamples=false latency filename=myjrarecording time=120
stop


every time you do a kill -3 pid, the JRockit VM will execute the control handler.

http://download.oracle.com/docs/cd/E13188_01/jrockit/geninfo/diagnos/ctrlbreakhndlr.html