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From: Martin Gregorie <martin@mydomain.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: Get real, user and system time
Date: Mon, 20 Jul 2020 08:55:33 -0000 (UTC)
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On Mon, 20 Jul 2020 08:06:31 +0200, Luuk wrote:

> On 18-7-2020 22:59, Martin Gregorie wrote:
>> On Sat, 18 Jul 2020 16:26:35 +0200, Cecil Westerhof wrote:
>> 
>>> In Linux we have the time command to get the real, user and system
>>> time that a command takes.
>>> I know how to get the real time a method takes, but is there a way to
>>> get the user and system time a method takes also?
>>>
>> The only way I can think of, offhand would be the Stopwatch class,
>> which appeared here some time ago. I won't include it as the
>> (reasonably well- commented) copy I have is 118 lines. It has start(),
>> stop() methods, so start/stop should be called to time a process and
>> toString() to display the elapsed time in seconds. Its resolution is to
>> the nearest millisecond.
>> 
>> I've not included it because my copy is 118 lines, tolerably commented.
>> I can e-mail you a copy if it looks useful.
>> 
>> 
>> 
> does it looks like this class:
> https://introcs.cs.princeton.edu/java/stdlib/Stopwatch.java.html

Its a similar idea, but the version I have doesn't have a main() method 
and has start(), stop() and reset() methods, IOW its better adapted to 
what you're trying to do:


Stopwatch sw = new StopWatch();
...
sw.start();
myMethod(arguments);
sw.stop();
System.stderr.println("myMethod: " + sw.toString()
...

The output would be something like:

myMethod: Stopwatch(2020.07.20.09.53.56, 2020.07.20.09.53.59, 3.001 
seconds)
 

-- 
Martin    | martin at
Gregorie  | gregorie dot org