Use perf flamegraphs to do more complete system level profiling

Netflix and Twitter have been using perf and flamegraphs to profile their jvms for a while now, #1 feature is you can live profile a production machine without killing performance, #2 is you can see the time spent in the java code, the jvm code and the kernel code.

Requires:

• Java8
• perf_events (available for linux)
• root access
• some small perl scripts which compile the result

http://techblog.netflix.com/2015/07/java-in-flames.html
https://github.com/brendangregg/Misc/blob/master/java/jmaps