How to profile the node (with hprof)
Shut down the node.
Edit wrapper.conf to add the profiling options and turn off various timeouts:
wrapper.java.additional.3=-Xloggc:freenet.loggc
wrapper.java.additional.4=-Xrunhprof:heap=all,format=a,depth=12,lineno=y,doe=y,gc_okay=y
wrapper.startup.timeout=0
wrapper.shutdown.timeout=0
wrapper.jvm_exit.timeout=0
wrapper.ping.timeout=0
wrapper.disable_restarts=true
In freenet.ini, enable minimal logging and turn off hang checkers (this is another kind of timeout):
logger.priority=NORMAL
logger.priorityDetail=
node.disableHangCheckers=true
Or turn it off altogether:
logger.enabled=false
node.disableHangCheckers=true
And disable any logger.logLevelDetails
This will produce a file called java.hprof.txt on shutdown (which may take some time), and when you kill -QUIT the node.
Search for SITES BEGIN within the file, the main table follows. The stack trace numbers refer to traces earlier on in the file - search from the beginning of the file for TRACE < number i got from the main table >
