How to figure out the cpu usage of a java-process in java

Question

i've been searching the web for a possibility in java to figure out, how much cpu my application needs but sadly couldn't find a solution. Most of the people referred to "OperatingSystemMXBean" which works on platforms like linux, but not on windows. My application will run on multiple os but mostly on windows. So is there any way to figure out the cpu usage of a java-application in the same runtime which is platform independend or supports multiple platforms including windows, mac and linux?

Thanks
Baschdi

You might find the answer here: stackoverflow.com/questions/16840594/… — Sason Ohanian
– Sason Ohanian, Commented Mar 22, 2016 at 13:40

Community · Accepted Answer · 2017-05-23 12:15:26Z

1

I disagree with your statement. OperatingSystemMXBean is available on Windows. Just it's a bit hidden. Be careful with the package import. It's not the default offered by Eclipse.

 import java.lang.management.ManagementFactory;
 import com.sun.management.OperatingSystemMXBean;

 public class Test {

 public static void main(String[] args) {
     OperatingSystemMXBean operatingSystemMXBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
     System.out.println(operatingSystemMXBean.getProcessCpuLoad());
}}

If you run this excerpt probably you obtain 0.0. It's not a malfunction. It's only a very light program and the cpu load may take a while to be calculated. You could obtain -1 on first invocations. Try it in your app, recovering the value in various instants.

If I'm not mistaken, this class is included in rt.jar. You may find some problems importing the package with Eclipse IDE. Here you can find the explanation and how to fix it. Why is access restricted to jre6/lib/rt.jar for OperatingSystemMxBean?

edited May 23, 2017 at 12:15

CommunityBot

11 silver badge

answered Mar 22, 2016 at 14:00

RubioRic

2,4684 gold badges32 silver badges38 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Basti Over a year ago

This worked fine for windows. Thank you for the answer. Any suggestions about the other operating-systems? I need to support at least windows, mac and linux. Is com.sun.management.OperatingSystemMXBean accessable on those too and is it working? Besides that im using jdk8 to build this project, so i didn't even get the restriction

RubioRic Over a year ago

The restriction appears only as a warning if you are developing your code with Eclipse IDE. I think that this bean is available in those operative systems. I've tested it in Unix correctly but not in Mac but it's included in the java runtime. If you can execute java code, you have it available.

Sason Ohanian · Accepted Answer · 2016-03-22 13:46:29Z

-1

This works nice on windows 10. Measuring cpu util of skype:

c:\Windows\system32\typeperf "\Process(Skype)\% processor time"

answered Mar 22, 2016 at 13:46

Sason Ohanian

7951 gold badge5 silver badges16 bronze badges

1 Comment

Basti Over a year ago

Sorry but i asked for a platform independend way to figure out the cpu usage of a java-application in java. Thats not quiet the answer i was searching for

Collectives™ on Stack Overflow

How to figure out the cpu usage of a java-process in java

2 Answers 2

2 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related