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Java Standard Edition (SE)

OperatingSystemMXBean


compact3
java.lang.management

Interface OperatingSystemMXBean

    • Method Detail

      • getAvailableProcessors

        int getAvailableProcessors()
        Returns the number of processors available to the Java virtual machine. This method is equivalent to the Runtime.availableProcessors() method.

        This value may change during a particular invocation of the virtual machine.

        Returns:
        the number of processors available to the virtual machine; never smaller than one.
      • getSystemLoadAverage

        double getSystemLoadAverage()
        Returns the system load average for the last minute. The system load average is the sum of the number of runnable entities queued to the available processors and the number of runnable entities running on the available processors averaged over a period of time. The way in which the load average is calculated is operating system specific but is typically a damped time-dependent average.

        If the load average is not available, a negative value is returned.

        This method is designed to provide a hint about the system load and may be queried frequently. The load average may be unavailable on some platform where it is expensive to implement this method.

        Returns:
        the system load average; or a negative value if not available.
        Since:
        1.6


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