Profiling a Java Spring application

Question

I have a Spring application that I believe has some bottlenecks, so I\'d like to run it with a profiler to measure what functions take how much time. Any recommendations to

Answer 1

A bit modified version of Yuri's answer on top (the selected answer) that auto calculates the totals of durations and arranges them desc. The totals gets printed in the end only. Might save you 10 mns.

    @Component
    @Aspect
    public class SystemArchitecture
    {

         @Pointcut("execution(* erp..*.*(..))")
         public void businessController()
         {
         }

         @Pointcut("execution(* TestMain..*.*(..))")
         public void theEnd()
         {
         }
    }



    @Component
    @Aspect
    public class TimeExecutionProfiler
    {

        static Hashtable  ht  = new Hashtable();

        @Around("profiler.SystemArchitecture.businessController()")
        public Object profile(ProceedingJoinPoint pjp) throws Throwable
        {
            long start = System.nanoTime();
            Object output = pjp.proceed();
            long elapsedTime = System.nanoTime() - start;
            String methodName = pjp.getSignature().toString();
            if (ht.get(methodName) == null)
            {
                ht.put(methodName, elapsedTime);
            }
            else
            {
                ht.put(methodName, ht.get(methodName) + elapsedTime);
            }
            // System.out.println(methodName + " : " + elapsedTime + " milliseconds.");

            return output;
        }

        @After("profiler.SystemArchitecture.theEnd()")
        public void profileMemory()
        {
            List