sudo -u jetty jmap -dump:format=b,file=jettyheap.bin -F 23260

http://stackoverflow.com/questions/5358225/openjdk-core-dump-from-the-command-line

http://www.wolfe.id.au/2011/10/16/monitoring-the-openjdk-from-the-cli/

http://stackoverflow.com/questions/16587460/heap-d...-on-centos-64bit-and-openjdk-7