perfix

Pretty basic profiling tool for JVM's

Highlights:

Meant for development time (after process stops, data is gone).
Minimal memory footprint (agent < 1 mb).
Easy setup (2 commandline arguments for java process)
Minimalistic web interface.
Execution time is measured in nanoseconds
No manual instrumentation necessary using loadtime bytecode manipulation (javassist).
No special jdbc configuration necessary (ie no wrapped jdbc driver).
The agent is also the server (unlike commercial tooling). This way there is no overhead in interprocess communication.

Agent that instruments loaded classes: -javaagent:/perfix.jar
Include classes for instrumentation with -Dperfix.includes=com.project. ...etc (includes subpackages)
Web page to report executed methods and sql query excutions:
* #invocations
* total execution time for the method in nanoseconds (this is also the sorting order)
* average time in nanoseconds per method (= total/#invocations)
The http server starts on port 2048 by default. Use -Dperfix.port=... to adjust.

Overhead (in method execution time) not clear yet. I wouldn't use it in production.
Finish jdbc query logging (CallableStatement)
Implement an actual call stack the way commercial tools work
Ability to dynamically turn off metrics to minimize cpu and memory overhead (when response time is below a set treshold)

This has only been tested on oracle java8 in spring-boot using tomcat web-container