Examples of OperatingSystemMXBean

com.sun.management.OperatingSystemMXBean
Platform-specific management interface for the operating system on which the Java virtual machine is running.
The OperatingSystemMXBean object returned by {@link java.lang.management.ManagementFactory#getOperatingSystemMXBean()}is an instance of the implementation class of this interface or {@link UnixOperatingSystemMXBean} interface depending onits underlying operating system. @author Mandy Chung @since 1.5
java.lang.management.OperatingSystemMXBean
The management interface for the operating system on which the Java virtual machine is running.
A Java virtual machine has a single instance of the implementation class of this interface. This instance implementing this interface is an MXBean that can be obtained by calling the {@link ManagementFactory#getOperatingSystemMXBean} method orfrom the {@link ManagementFactory#getPlatformMBeanServer platform MBeanServer} method.
The ObjectName for uniquely identifying the MXBean for the operating system within an MBeanServer is:
{@link ManagementFactory#OPERATING_SYSTEM_MXBEAN_NAME java.lang:type=OperatingSystem}

This interface defines several convenient methods for accessing system properties about the operating system on which the Java virtual machine is running. @see JMX Specification. @see Ways to Access MXBeans @author Mandy Chung @version 1.11, 12/09/05 @since 1.5

Examples of com.sun.management.OperatingSystemMXBean

    // 剩余内存
    long freeMemory = Runtime.getRuntime().freeMemory() / kb;
    // 最大可使用内存
    long maxMemory = Runtime.getRuntime().maxMemory() / kb;


    OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory
        .getOperatingSystemMXBean();


    // 操作系统
    String osName = System.getProperty("os.name");
    // 总的物理内存
    long totalMemorySize = osmxb.getTotalPhysicalMemorySize() / kb;
    // 剩余的物理内存
    long freePhysicalMemorySize = osmxb.getFreePhysicalMemorySize() / kb;
    // 已使用的物理内存
    long usedMemory = (osmxb.getTotalPhysicalMemorySize() - osmxb
        .getFreePhysicalMemorySize()) / kb;


    // 获得线程总数
    ThreadGroup parentThread;
    for (parentThread = Thread.currentThread().getThreadGroup(); parentThread

View Full Code Here

Examples of com.sun.management.OperatingSystemMXBean

     * @since 1.15.0.4
     */
    public static long getSuggestedMaxJvmHeapSize() {
        try {
            Object bean = ManagementFactory.getOperatingSystemMXBean();
            OperatingSystemMXBean osMxBean = (OperatingSystemMXBean) bean;
            long systemMemoryBytes = osMxBean.getTotalPhysicalMemorySize();
            long systemMemoryMegabytes = systemMemoryBytes >> 20;
            long halfOfMemory = systemMemoryMegabytes / 2;
            long result = halfOfMemory;


            // Systems today may have a lot of memory - 4 or 6GB - and half

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

    private static void runBenchmarkWithZipfDistribution1(final boolean useRWlock, final ILock lock, final String filename, final int threads, final int capacity, final int round, final double scanPercentage, final int scanLength, final ReplacementAlgorithm algo, final int pageSize, final long[] dist)
            throws IOException, InterruptedException, ServiceException {
        final ConcurrentPluggableCache<Long, byte[]> cache = new ConcurrentPluggableCache<Long, byte[]>(capacity, ConcurrentCollectionProvider.<ICacheEntry<Long, byte[]>> createConcurrentMapLong(capacity));
        cache.setReplacementPolicy(ReplacementPolicySelector.<Long, byte[]> provide(capacity, algo));


        OperatingSystemMXBean mx = ManagementFactory.getOperatingSystemMXBean();
        final com.sun.management.OperatingSystemMXBean sunmx = (com.sun.management.OperatingSystemMXBean) mx;
        long startCpuTime = sunmx.getProcessCpuTime();


        final double percent = scanPercentage / 100d;
        StopWatch watchdog = new StopWatch("nthreads: " + threads + ", capacity: " + capacity

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

    private static void runBenchmarkWithZipfDistribution1(final boolean useRWlock, final ILock lock, final String filename, final int threads, final int capacity, final int round, final double scanPercentage, final int scanLength, final ReplacementAlgorithm algo, final int pageSize, final long[] dist)
            throws IOException, InterruptedException, ServiceException {
        final ConcurrentPluggableCache<Long, byte[]> cache = new ConcurrentPluggableCache<Long, byte[]>(capacity, ConcurrentCollectionProvider.<ICacheEntry<Long, byte[]>> createConcurrentMapLong(capacity));
        cache.setReplacementPolicy(ReplacementPolicySelector.<Long, byte[]> provide(capacity, algo));


        OperatingSystemMXBean mx = ManagementFactory.getOperatingSystemMXBean();
        final com.sun.management.OperatingSystemMXBean sunmx = (com.sun.management.OperatingSystemMXBean) mx;
        long startCpuTime = sunmx.getProcessCpuTime();


        final double percent = scanPercentage / 100d;
        StopWatch watchdog = new StopWatch("nthreads: " + threads + ", capacity: " + capacity

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

    private static void runBenchmarkWithZipfDistribution1(final boolean useRWlock, final ILock lock, final String filename, final int threads, final int capacity, final int round, final double scanPercentage, final int scanLength, final ReplacementAlgorithm algo, final int pageSize, final long[] dist)
            throws IOException, InterruptedException, ServiceException {
        final ConcurrentPluggableCache<Long, byte[]> cache = new ConcurrentPluggableCache<Long, byte[]>(capacity, ConcurrentCollectionProvider.<ICacheEntry<Long, byte[]>> createConcurrentMapLong(capacity));
        cache.setReplacementPolicy(ReplacementPolicySelector.<Long, byte[]> provide(capacity, algo));


        OperatingSystemMXBean mx = ManagementFactory.getOperatingSystemMXBean();
        final com.sun.management.OperatingSystemMXBean sunmx = (com.sun.management.OperatingSystemMXBean) mx;
        long startCpuTime = sunmx.getProcessCpuTime();


        final double percent = scanPercentage / 100d;
        StopWatch watchdog = new StopWatch("nthreads: " + threads + ", capacity: " + capacity

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

    }


    private static void initializeSunJdk() {
        boolean useSunMx = false;
        if(IS_SUN_VM) {
            OperatingSystemMXBean mx = ManagementFactory.getOperatingSystemMXBean();
            com.sun.management.OperatingSystemMXBean sunmx = (com.sun.management.OperatingSystemMXBean) mx;
            long testval = sunmx.getProcessCpuTime();
            if(testval != -1L) {
                useSunMx = true;
            }

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

                LogFactory.getLog(SystemUtils.class).error("Failed to obtain CPU load via Hyperic Sigar", e);
                return -1d;
            }
            return cpuload.doubleValue();
        } else if(useSunJdk6) {
            OperatingSystemMXBean mx = ManagementFactory.getOperatingSystemMXBean();
            com.sun.management.OperatingSystemMXBean sunmx = (com.sun.management.OperatingSystemMXBean) mx;
            double d = sunmx.getSystemLoadAverage();
            if(d > 0) {
                return d / NPROCS;
            }

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

    @Deprecated
    public static long getProcessCpuTime() {
        if(preferSigar) {
            throw new UnsupportedOperationException("SystemUtils#getProcessCpuTime() is not supported when using Hyperic Sigar");
        } else if(useSunJdk6) {
            OperatingSystemMXBean mx = ManagementFactory.getOperatingSystemMXBean();
            com.sun.management.OperatingSystemMXBean sunmx = (com.sun.management.OperatingSystemMXBean) mx;
            return sunmx.getProcessCpuTime();
        } else {
            return _getProcessCpuTime() * 1000000L; /* milli to nano (10^6) */
        }

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

         String cname = oname.getCanonicalName();
         PlatformMBeanIDC mpidc = new PlatformMBeanIDC(server, oname, mbean);
         mbeans.put(cname, mpidc);
      }
      // OperatingSystemMXBean
      OperatingSystemMXBean osbean = ManagementFactory.getOperatingSystemMXBean();
      ObjectName osname = new ObjectName(ManagementFactory.OPERATING_SYSTEM_MXBEAN_NAME);
      PlatformMBeanIDC osidc = new PlatformMBeanIDC(server, osname, osbean);
      mbeans.put(osname.getCanonicalName(), osidc);


      // RuntimeMXBean

View Full Code Here

Examples of java.lang.management.OperatingSystemMXBean

        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        report.setScreenDevices(ge.getScreenDevices().length);
    }


    private void logCPU(Report report) {
        OperatingSystemMXBean bean = ManagementFactory.getOperatingSystemMXBean();
        report.setNumberOfProcessors(bean.getAvailableProcessors());
        String unknown = "unknown";                                   // NOI18N
        String str = System.getProperty("os.name", unknown) + ", " + // NOI18N
                System.getProperty("os.version", unknown) + ", " + // NOI18N
                System.getProperty("os.arch", unknown);               // NOI18N

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.