get the Time consumed by a method

Question

what i want to do is to find the the time consumed by firing a certain method so i am using System.currentTimeMillis() before and after the method then get the difference but, is there other way since getting the currentTimeMillis is also time consumable and i am working on increasing the performance of a certain protocol. here what i have did

public void someMethod
{
long x=System.currentTimeMillis();
... my bussiness
long y=System.currentTimeMillis();
int timeConsucmed =y-x;

}

Look at [this question](http://stackoverflow.com/questions/180158/how-do-i-time-a-methods-execution-in-java). The answers do have `System.currentTimeMillis()` and `System.nanoTime()`, but one of the questions mentions using a profiler, which is probably the better option for you if you want more accurate execution timing. — ajp15243, Jun 09 '13 at 06:32

score 1 · Answer 1 · answered Jun 09 '13 at 06:33

1

If you are doing for this for testing a single method use the method which you are using ..otherwise go for this library,If you are doing this multiple times.

Java™ Execution Time Measurement Library

answered Jun 09 '13 at 06:33

Suresh Atta

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zengr · Accepted Answer · 2017-02-13T18:46:56.603

1

I strongly recommend using codahale's metrics and use the timer functionality.

edited Feb 13 '17 at 18:46

answered Jun 09 '13 at 06:38

zengr

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the links are broken ... – JimHawkins Feb 13 '17 at 16:57
@JimHawkins Thanks! updated link. – zengr Feb 13 '17 at 18:47

score 0 · Answer 3 · answered Jun 09 '13 at 06:34

It doesn't cost much, at most 1-2 microsecond. If you want you can change it to

public void someMethod
{
   //my bussiness
}

from whereever you are calling

long x=System.currentTimeMillis();

someMethod();

long y=System.currentTimeMillis();
int timeConsucmed =y-x;

get the Time consumed by a method

3 Answers3