Class FreeBsdCentralProcessor

    • Field Detail

      • LOG

        private static final org.slf4j.Logger LOG
      • CPUMASK

        private static final java.util.regex.Pattern CPUMASK
      • CPTIME_SIZE

        private static final long CPTIME_SIZE
    • Constructor Detail

      • FreeBsdCentralProcessor

        FreeBsdCentralProcessor()
    • Method Detail

      • matchBitmasks

        private static java.util.List<CentralProcessor.LogicalProcessor> matchBitmasks​(long group1,
                                                                                       java.util.List<java.lang.Long> group2,
                                                                                       java.util.List<java.lang.Long> group3)
      • getMatchingBitmask

        private static int getMatchingBitmask​(java.util.List<java.lang.Long> bitmasks,
                                              int lp)
      • getSystemLoadAverage

        public double[] getSystemLoadAverage​(int nelem)
        Description copied from interface: CentralProcessor
        Returns the system load average for the number of elements specified, up to 3, representing 1, 5, and 15 minutes. 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.

        This method is designed to provide a hint about the system load and may be queried frequently.

        The way in which the load average is calculated is operating system specific but is typically a damped time-dependent average. Linux includes processes waiting for system resources such as disks, while macOS and Unix consider only processes waiting for CPU.

        Windows does not provide a load average. Users may set the configuration property oshi.os.windows.loadaverage to true to start a daemon thread which will provide a similar metric.

        The load average may be unavailable on some platforms (e.g., Windows without the above configuration). If the load average is not available, a negative value is returned.

        Parameters:
        nelem - Number of elements to return.
        Returns:
        an array of the system load averages for 1, 5, and 15 minutes with the size of the array specified by nelem; or negative values if not available.
      • getProcessorIDfromDmiDecode

        private static java.lang.String getProcessorIDfromDmiDecode​(long processorID)
        Fetches the ProcessorID from dmidecode (if possible with root permissions), otherwise uses the values from /var/run/dmesg.boot
        Parameters:
        processorID - The processorID as a long
        Returns:
        The ProcessorID string