JVM Profiling

JVM profiling in highly useful in identifying what in happening in JVM.

There are many tools available for profiling.

-Visual VM

-JProfiler

Profiling with VisualVM

-Open VisualVM

-Select the processId

-Click 'Sampler' tab

-Click settings. Select profile only package, com.thetechiehouse.*

-Click CPU

-Hit the URL on browser

-Once we get the response, Stop the CPU profiling.

Profiling with Jprofiler:

- It will provide  CPU Views, Heap Walker, Live Memory, recording capability, saving Snapshot etc.

We should be seeing the profiling details along with method level/self/CPU/ total execution time.

Snapshot can be downloaded, nps file will have all the profiling details captured.
Click the combined tab to view the overall method execution time.