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Thread: How to get a System's total CPU usage percentage using a java program

  1. #1
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    Question How to get a System's total CPU usage percentage using a java program

    Hi,

    I need to find the system's total CPU usage percentage ( as we see in Windows Task Manager) using a java program. I am able to find the CPU usage time for one process using the OperatingSystemMXBean API. But i am not able to find a way to find the CPU usage percentage for all the process running on a system.
    I cannut use any third party tools to acheive this. Are there any third party jars available which can help me in getting this data?

    Thanks


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    Default Re: How to get a System's total CPU usage percentage using a java program

    I don't think it's possible in pure Java. You'll either need to use a 3rd party package, or write your own.

    One that I've heard of (but never used personally) is called the SIGAR API. It should get you what you want.

    To write your own, you'll need to understand how to get these values using another language (possibly C/C++) and then interface that library with your Java code using JNI. Note that different operating systems will use different methods to get these values so you'll need to write a separate library to get support across multiple operating systems.

    Further reading: How to monitor the computer's cpu, memory, and disk usage in Java? - Stack Overflow
    Last edited by helloworld922; January 7th, 2011 at 01:04 AM.

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    Default Re: How to get a System's total CPU usage percentage using a java program

    you can also try WMI using Java.

    you can seean example of how its done using vbscript. Then adapt the WMI code portion with Java.

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