Examples of java.lang.management.OperatingSystemMXBean

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

        outPW.printf(INDENT_KEY_VALUE_FORMAT, "framework", bundleContext.getBundle(0).getSymbolicName() + " - " +
                bundleContext.getBundle(0).getVersion()).println();
    }


    private void dumpOSInformation(final PrintWriter outPW) {
        final OperatingSystemMXBean mxBean = ManagementFactory.getOperatingSystemMXBean();
        if( null == mxBean) {
            return;
        }
        outPW.printf(KEY_VALUE_FORMAT, "Operating System", mxBean.getName() + ' ' + mxBean.getVersion()).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "architecture", mxBean.getArch()).println();
        outPW.printf(INDENT_KEY_VALUE_FORMAT, "processors", mxBean.getAvailableProcessors()).println();
//        outPW.printf(INDENT_KEY_VALUE_FORMAT, "current system load average", mxBean.getSystemLoadAverage()).println();
    }

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    protected Object doExecute() throws Exception {
        int maxNameLen;


        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
        ThreadMXBean threads = ManagementFactory.getThreadMXBean();
        MemoryMXBean mem = ManagementFactory.getMemoryMXBean();
        ClassLoadingMXBean cl = ManagementFactory.getClassLoadingMXBean();


        //
        // print Karaf informations
        //
        maxNameLen = 25;
        System.out.println("Karaf");
        printValue("Karaf version", maxNameLen, System.getProperty("karaf.version"));
        printValue("Karaf home", maxNameLen, System.getProperty("karaf.home"));
        printValue("Karaf base", maxNameLen, System.getProperty("karaf.base"));
        printValue("OSGi Framework", maxNameLen, bundleContext.getBundle(0).getSymbolicName() + " - " +
                bundleContext.getBundle(0).getVersion());
        System.out.println();


        System.out.println("JVM");
        printValue("Java Virtual Machine", maxNameLen, runtime.getVmName() + " version " + runtime.getVmVersion());
        printValue("Version", maxNameLen, System.getProperty("java.version"));
        printValue("Vendor", maxNameLen, runtime.getVmVendor());
        printValue("Uptime", maxNameLen, printDuration(runtime.getUptime()));
        try {
            printValue("Process CPU time", maxNameLen, printDuration(getSunOsValueAsLong(os, "getProcessCpuTime") / 1000000));
        } catch (Throwable t) {
        }
        printValue("Total compile time", maxNameLen, printDuration(ManagementFactory.getCompilationMXBean().getTotalCompilationTime()));


        System.out.println("Threads");
        printValue("Live threads", maxNameLen, Integer.toString(threads.getThreadCount()));
        printValue("Daemon threads", maxNameLen, Integer.toString(threads.getDaemonThreadCount()));
        printValue("Peak", maxNameLen, Integer.toString(threads.getPeakThreadCount()));
        printValue("Total started", maxNameLen, Long.toString(threads.getTotalStartedThreadCount()));


        System.out.println("Memory");
        printValue("Current heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getUsed()));
        printValue("Maximum heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getMax()));
        printValue("Committed heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getCommitted()));
        printValue("Pending objects", maxNameLen, Integer.toString(mem.getObjectPendingFinalizationCount()));
        for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) {
            String val = "Name = '" + gc.getName() + "', Collections = " + gc.getCollectionCount() + ", Time = " + printDuration(gc.getCollectionTime());
            printValue("Garbage collector", maxNameLen, val);
        }


        System.out.println("Classes");
        printValue("Current classes loaded", maxNameLen, printLong(cl.getLoadedClassCount()));
        printValue("Total classes loaded", maxNameLen, printLong(cl.getTotalLoadedClassCount()));
        printValue("Total classes unloaded", maxNameLen, printLong(cl.getUnloadedClassCount()));


        System.out.println("Operating system");
        printValue("Name", maxNameLen, os.getName() + " version " + os.getVersion());
        printValue("Architecture", maxNameLen, os.getArch());
        printValue("Processors", maxNameLen, Integer.toString(os.getAvailableProcessors()));
        try {
            printValue("Total physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalPhysicalMemorySize")));
            printValue("Free physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getFreePhysicalMemorySize")));
            printValue("Committed virtual memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getCommittedVirtualMemorySize")));
            printValue("Total swap space", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalSwapSpaceSize")));

View Full Code Here


    protected Object doExecute() throws Exception {
        int maxNameLen;


        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
        ThreadMXBean threads = ManagementFactory.getThreadMXBean();
        MemoryMXBean mem = ManagementFactory.getMemoryMXBean();
        ClassLoadingMXBean cl = ManagementFactory.getClassLoadingMXBean();


        //
        // print Karaf informations
        //
        maxNameLen = 25;
        System.out.println("Karaf");
        printValue("Karaf version", maxNameLen, System.getProperty("karaf.version"));
        printValue("Karaf home", maxNameLen, System.getProperty("karaf.home"));
        printValue("Karaf base", maxNameLen, System.getProperty("karaf.base"));
        printValue("OSGi Framework", maxNameLen, bundleContext.getBundle(0).getSymbolicName() + " - " +
                bundleContext.getBundle(0).getVersion());
        System.out.println();


        System.out.println("JVM");
        printValue("Java Virtual Machine", maxNameLen, runtime.getVmName() + " version " + runtime.getVmVersion());
        printValue("Version", maxNameLen, System.getProperty("java.version"));
        printValue("Vendor", maxNameLen, runtime.getVmVendor());
        printValue("Pid", maxNameLen, getPid());
        printValue("Uptime", maxNameLen, printDuration(runtime.getUptime()));
        try {
            printValue("Process CPU time", maxNameLen, printDuration(getSunOsValueAsLong(os, "getProcessCpuTime") / 1000000));
        } catch (Throwable t) {
        }
        printValue("Total compile time", maxNameLen, printDuration(ManagementFactory.getCompilationMXBean().getTotalCompilationTime()));


        System.out.println("Threads");
        printValue("Live threads", maxNameLen, Integer.toString(threads.getThreadCount()));
        printValue("Daemon threads", maxNameLen, Integer.toString(threads.getDaemonThreadCount()));
        printValue("Peak", maxNameLen, Integer.toString(threads.getPeakThreadCount()));
        printValue("Total started", maxNameLen, Long.toString(threads.getTotalStartedThreadCount()));


        System.out.println("Memory");
        printValue("Current heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getUsed()));
        printValue("Maximum heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getMax()));
        printValue("Committed heap size", maxNameLen, printSizeInKb(mem.getHeapMemoryUsage().getCommitted()));
        printValue("Pending objects", maxNameLen, Integer.toString(mem.getObjectPendingFinalizationCount()));
        for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) {
            String val = "Name = '" + gc.getName() + "', Collections = " + gc.getCollectionCount() + ", Time = " + printDuration(gc.getCollectionTime());
            printValue("Garbage collector", maxNameLen, val);
        }


        System.out.println("Classes");
        printValue("Current classes loaded", maxNameLen, printLong(cl.getLoadedClassCount()));
        printValue("Total classes loaded", maxNameLen, printLong(cl.getTotalLoadedClassCount()));
        printValue("Total classes unloaded", maxNameLen, printLong(cl.getUnloadedClassCount()));


        System.out.println("Operating system");
        printValue("Name", maxNameLen, os.getName() + " version " + os.getVersion());
        printValue("Architecture", maxNameLen, os.getArch());
        printValue("Processors", maxNameLen, Integer.toString(os.getAvailableProcessors()));
        try {
            printValue("Total physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalPhysicalMemorySize")));
            printValue("Free physical memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getFreePhysicalMemorySize")));
            printValue("Committed virtual memory", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getCommittedVirtualMemorySize")));
            printValue("Total swap space", maxNameLen, printSizeInKb(getSunOsValueAsLong(os, "getTotalSwapSpaceSize")));

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   */
  public static SimpleOrderedMap<Object> getSystemInfo() throws Exception 
  {
    SimpleOrderedMap<Object> info = new SimpleOrderedMap<Object>();
    
    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    info.add( "name", os.getName() );
    info.add( "version", os.getVersion() );
    info.add( "arch", os.getArch() );


    // Java 1.6
    addGetterIfAvaliable( os, "systemLoadAverage", info );


    // com.sun.management.UnixOperatingSystemMXBean
    addGetterIfAvaliable( os, "openFileDescriptorCount", info );
    addGetterIfAvaliable( os, "maxFileDescriptorCount", info );


    // com.sun.management.OperatingSystemMXBean
    addGetterIfAvaliable( os, "committedVirtualMemorySize", info );
    addGetterIfAvaliable( os, "totalPhysicalMemorySize", info );
    addGetterIfAvaliable( os, "totalSwapSpaceSize", info );
    addGetterIfAvaliable( os, "processCpuTime", info );


    try { 
      if( !os.getName().toLowerCase().startsWith( "windows" ) ) {
        // Try some command line things
        info.add( "uname",  execute( "uname -a" ) );
        info.add( "ulimit", execute( "ulimit -n" ) );
        info.add( "uptime", execute( "uptime" ) );
      }

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    reader.close();
  }


  public static void setupJvmMetrics() {
    final MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    final OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();


    Metrics.newGauge(new MetricName(ORG_APACHE_BLUR, SYSTEM, LOAD_AVERAGE), new Gauge<Double>() {
      @Override
      public Double value() {
        return operatingSystemMXBean.getSystemLoadAverage();
      }
    });
    Metrics.newGauge(new MetricName(ORG_APACHE_BLUR, JVM, HEAP_USED), new Gauge<Long>() {
      @Override
      public Long value() {
        MemoryUsage usage = memoryMXBean.getHeapMemoryUsage();
        return usage.getUsed();
      }
    });
    Method processCpuTimeMethod = null;
    for (Method method : operatingSystemMXBean.getClass().getDeclaredMethods()) {
      if (method.getName().equals("getProcessCpuTime")) {
        method.setAccessible(true);
        processCpuTimeMethod = method;
      }
    }
    final double availableProcessors = operatingSystemMXBean.getAvailableProcessors();
    if (processCpuTimeMethod != null) {
      final Method pctm = processCpuTimeMethod;
      Metrics.newGauge(new MetricName(ORG_APACHE_BLUR, JVM, CPU_USED), new Gauge<Double>() {
        private long start = System.nanoTime();
        private long lastCpuTime = getProcessCputTime(pctm, operatingSystemMXBean);

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  }
  private void logPlatformInfo(String serviceName) {
    if (ManagementFactory.getPlatformMBeanServer() != null) {
      RuntimeMXBean bean = ManagementFactory.getRuntimeMXBean();
      // MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
      OperatingSystemMXBean osBean = ManagementFactory.getOperatingSystemMXBean();
      // bean.getName() should return a string that looks like this: PID@HOSTNAME
      // where PID is the process id and the HOSTNAME is the name of the machine
      processPid = bean.getName();
      if (processPid != null && processPid.trim().length() > 0) {
        int endPos = processPid.indexOf("@"); // find the position where the PID ends
        if (endPos > -1) {
          processPid = processPid.substring(0, endPos);
        }
      }
    
      String loadedJars = getLoadedJars();  
      DateFormat df = new SimpleDateFormat("dd MMM yyyy HH:mm:ss ");


      StringBuffer platformInfo = new StringBuffer();
      platformInfo.append("\n+------------------------------------------------------------------");
      platformInfo.append("\n                   Starting UIMA AS Service - PID: " + processPid);
      platformInfo.append("\n+------------------------------------------------------------------");
      platformInfo.append("\n+ Service Name:" + serviceName);
      platformInfo.append("\n+ Service Queue Name:" + endpointName);
      platformInfo.append("\n+ Service Start Time:" + df.format(bean.getStartTime()));
      platformInfo.append("\n+ UIMA AS Version:" + uimaAsVersion.getVersionString());
      platformInfo.append("\n+ UIMA Core Version:" + UIMAFramework.getVersionString());
      if ( System.getenv(JMS_PROVIDER_HOME) != null) {
        platformInfo.append("\n+ JMS Provider Home:" + System.getenv(JMS_PROVIDER_HOME));
      }
      platformInfo.append("\n+ OS Name:" + osBean.getName());
      platformInfo.append("\n+ OS Version:" + osBean.getVersion());
      platformInfo.append("\n+ OS Architecture:" + osBean.getArch());
      platformInfo.append("\n+ OS CPU Count:" + osBean.getAvailableProcessors());
      platformInfo.append("\n+ JVM Vendor:" + bean.getVmVendor());
      platformInfo.append("\n+ JVM Name:" + bean.getVmName());
      platformInfo.append("\n+ JVM Version:" + bean.getVmVersion());
      platformInfo.append("\n+ JVM Input Args:" + bean.getInputArguments());
      platformInfo.append("\n+ JVM Classpath:" + bean.getClassPath());

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   */
  public static SimpleOrderedMap<Object> getSystemInfo() throws Exception 
  {
    SimpleOrderedMap<Object> info = new SimpleOrderedMap<Object>();
    
    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    info.add( "name", os.getName() );
    info.add( "version", os.getVersion() );
    info.add( "arch", os.getArch() );


    // Java 1.6
    addGetterIfAvaliable( os, "systemLoadAverage", info );


    // com.sun.management.UnixOperatingSystemMXBean
    addGetterIfAvaliable( os, "openFileDescriptorCount", info );
    addGetterIfAvaliable( os, "maxFileDescriptorCount", info );


    // com.sun.management.OperatingSystemMXBean
    addGetterIfAvaliable( os, "committedVirtualMemorySize", info );
    addGetterIfAvaliable( os, "totalPhysicalMemorySize", info );
    addGetterIfAvaliable( os, "totalSwapSpaceSize", info );
    addGetterIfAvaliable( os, "processCpuTime", info );


    try { 
      if( !os.getName().toLowerCase().startsWith( "windows" ) ) {
        // Try some command line things
        info.add( "uname",  execute( "uname -a" ) );
        info.add( "ulimit", execute( "ulimit -n" ) );
        info.add( "uptime", execute( "uptime" ) );
      }

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      // com.sun.management.OperatingSystemMXBean provides some basic
      // information. See:
      // http://nadeausoftware.com/articles/2008/03/java%5Ftip%5Fhow%5Fget%5Fcpu%5Fand%5Fuser%5Ftime%5Fbenchmarking#UsingaSuninternalclasstogetJVMCPUtime
      try {
        // operation system
        OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();


        Long processCpuTime = getValue(operatingSystemMXBean, "getProcessCpuTime");
        metrics.addValue("ProcessCpuTime", processCpuTime, System.currentTimeMillis());


        Long totalSwapSpaceSize = getValue(operatingSystemMXBean, "getTotalSwapSpaceSize");

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    }
    


    public void dumpHeapSun(String heapName){
        final MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
        final OperatingSystemMXBean osBean = ManagementFactory.getOperatingSystemMXBean();
        final MBeanServer platformBean = ManagementFactory.getPlatformMBeanServer();
        
        HotSpotDiagnosticMXBean bean = null;
        
        try {

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//    stats.add(new StatRecord(getName(), "Total JVM mem", "long", totalMem,
//        Level.FINEST));
//    stats.add(new StatRecord(getName(), "Free JVM mem", "long", freeMem,
//        Level.FINEST));


    OperatingSystemMXBean osBean = ManagementFactory.getOperatingSystemMXBean();
    NumberFormat format = NumberFormat.getNumberInstance();
    format.setMaximumFractionDigits(4);
    stats.add(new StatRecord(getName(), "Load average", "double",
            format.format(osBean.getSystemLoadAverage()), Level.INFO));
    stats.add(new StatRecord(getName(), "CPUs no", "int",
            osBean.getAvailableProcessors(), Level.FINEST));


    ThreadMXBean thBean = ManagementFactory.getThreadMXBean();
    stats.add(new StatRecord(getName(), "Threads count", "int",
            thBean.getThreadCount(), Level.FINEST));
    long cpuTime = 0;

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