README.md

jstack-analyzer

Analyzes Hotspot/OpenJDK Jstacks and generates a HTML and flamegraphs views for inspecting the expensive paths.

Collecting JStacks

$ ./collectjstack.sh <process_name/id>
e.g.
$ ./collectjstack.sh mylauncher 1
Found process mylauncher with PID: 71498
Collecting jstacks in dir: jstack_12272018_2337
  20181227233708.71498.jstack
  20181227233709.71498.jstack
  20181227233710.71498.jstack
  20181227233711.71498.jstack
  20181227233712.71498.jstack
 ^C

To Analyse, run

$ ./jstack-analyze.sh <path_to_jstacks>
e.g.
$ ./jstack-analyze.sh ./sample

Processing jstacks in ./sample
Generated Flamegraphs...
./sample/flamegraph.svg
./sample/flamegraph_icicles.svg
Generated tree forms...
./sample/thread-tree.txt
./sample/thread-tree.htm

Flamegraph

Taken from Brendan Gregg's awesome flamegraphs

License

BSD