How to get Java profiling dump for creating flame graphs on the mac?

Question

I\'d like to collect stacktraces from my Java app for creating CPU Flame Graphs for profiling.

This is very similar to this question: How to get complete stack dump from

Answer 1

Did you try the jstack command? just run it on the command line: jstack pidOfJavaProcess > stack.txt (naturally, replacing pidOfJavaProcess with the actual process number). You could run this in a loop in bash (the default shell used on Mac OS X):

while true; do jstack pidOfJavaProcess >> stack.txt; sleep 1.0; done

note the >> to append to the file, and not overwrite it each second. Press Ctrl+C to stop logging the stack traces.

This will only generate the java stack traces, and not the native call stacks from the JVM.