怎么获取jvm的cpu占用率

Question

怎么获取jvm的cpu占用率

Answer 1

[quote]我明白你的意思，我是前后取了两次，中间隔了1分钟 [/quote]
怎么会一样呢？
[code="java"]
Thread thread = new Thread(new Runnable()
{

        @Override
        public void run()
        {
            while (true)
            {
            }
        }
    });
    long result = 0l;
    long result2 = 0l;
    OperatingSystemMXBean osMXBean = ManagementFactory
            .getOperatingSystemMXBean();
    if (osMXBean instanceof com.sun.management.OperatingSystemMXBean)
    {
        com.sun.management.OperatingSystemMXBean sunOSMXBean = (com.sun.management.OperatingSystemMXBean) osMXBean;
        result = sunOSMXBean.getProcessCpuTime();
    }
    thread.start();
    Thread.sleep(5000);

    OperatingSystemMXBean osMXBean2 = ManagementFactory
            .getOperatingSystemMXBean();
    if (osMXBean2 instanceof com.sun.management.OperatingSystemMXBean)
    {
        com.sun.management.OperatingSystemMXBean sunOSMXBean2 = (com.sun.management.OperatingSystemMXBean) osMXBean2;
        result2 = sunOSMXBean2.getProcessCpuTime();
    }
    System.out.println(result + "          " + result2);

[/code]