java.lang.management.ManagementFactory#getGarbageCollectorMXBeans

Source File: JVMGC.java From light-task-scheduler with Apache License 2.0

6 votes

private JVMGC() {
    for (GarbageCollectorMXBean item : ManagementFactory.getGarbageCollectorMXBeans()) {
        if ("ConcurrentMarkSweep".equals(item.getName()) //
                || "MarkSweepCompact".equals(item.getName()) //
                || "PS MarkSweep".equals(item.getName()) //
                || "G1 Old Generation".equals(item.getName()) //
                || "Garbage collection optimized for short pausetimes Old Collector".equals(item.getName()) //
                || "Garbage collection optimized for throughput Old Collector".equals(item.getName()) //
                || "Garbage collection optimized for deterministic pausetimes Old Collector".equals(item.getName()) //
                ) {
            fullGC = item;
        } else if ("ParNew".equals(item.getName()) //
                || "Copy".equals(item.getName()) //
                || "PS Scavenge".equals(item.getName()) //
                || "G1 Young Generation".equals(item.getName()) //
                || "Garbage collection optimized for short pausetimes Young Collector".equals(item.getName()) //
                || "Garbage collection optimized for throughput Young Collector".equals(item.getName()) //
                || "Garbage collection optimized for deterministic pausetimes Young Collector".equals(item.getName()) //
                ) {
            youngGC = item;
        }
    }
}

Source File: RuntimeInfoUtils.java From linden with Apache License 2.0

6 votes

public static JVMInfo getJVMInfo() {
  JVMInfo jvmInfo = new JVMInfo();

  Runtime runtime = Runtime.getRuntime();
  jvmInfo.setFreeMemory(runtime.freeMemory());
  jvmInfo.setTotalMemory(runtime.totalMemory());
  jvmInfo.setMaxMemory(runtime.maxMemory());

  int gcCount = 0;
  long gcTime = 0;
  for (GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) {
    long count = gc.getCollectionCount();
    if (count >= 0) {
      gcCount += count;
    }
    long time = gc.getCollectionTime();
    if (time >= 0) {
      gcTime += time;
    }
  }
  jvmInfo.setGcCount(gcCount);
  jvmInfo.setGcTime(gcTime);
  List<String> args = ManagementFactory.getRuntimeMXBean().getInputArguments();
  jvmInfo.setArguments(joiner.join(args));
  return jvmInfo;
}

Source File: PerformanceMonitor.java From Rainfall-core with Apache License 2.0

6 votes

public String printGCStats() {
  long totalGarbageCollections = 0;
  long garbageCollectionTime = 0;

  for (java.lang.management.GarbageCollectorMXBean gc : ManagementFactory.getGarbageCollectorMXBeans()) {

    long count = gc.getCollectionCount();

    if (count >= 0) {
      totalGarbageCollections += count;
    }

    long time = gc.getCollectionTime();

    if (time >= 0) {
      garbageCollectionTime += time;
    }
  }

  return "Total Garbage Collections: " + totalGarbageCollections + "\n" +
         "Total Garbage Collection Time (ms): " + garbageCollectionTime + "\n";

}

Source File: JVMStateCapHandler.java From uavstack with Apache License 2.0

6 votes

private void readGCUsage(MonitorElementInstance instance) {

        List<GarbageCollectorMXBean> gcmbList = ManagementFactory.getGarbageCollectorMXBeans();

        for (GarbageCollectorMXBean gcmb : gcmbList) {

            String name = gcmb.getName();
            String gcName = null;
            if (minorGC.contains(name)) {
                gcName = "mgc";

            }
            else if (fullGC.contains(name)) {
                gcName = "fgc";
            }

            if (gcName == null) {
                continue;
            }

            instance.setValue(gcName + "_count", gcmb.getCollectionCount());
            instance.setValue(gcName + "_time", gcmb.getCollectionTime());
        }
    }

Source File: PrometheusMetrics.java From Lavalink with MIT License

6 votes

public PrometheusMetrics() {

        InstrumentedAppender prometheusAppender = new InstrumentedAppender();
        //log metrics
        final LoggerContext factory = (LoggerContext) LoggerFactory.getILoggerFactory();
        final ch.qos.logback.classic.Logger root = factory.getLogger(Logger.ROOT_LOGGER_NAME);
        prometheusAppender.setContext(root.getLoggerContext());
        prometheusAppender.start();
        root.addAppender(prometheusAppender);

        //jvm (hotspot) metrics
        DefaultExports.initialize();

        //gc pause buckets
        final GcNotificationListener gcNotificationListener = new GcNotificationListener();
        for (GarbageCollectorMXBean gcBean : ManagementFactory.getGarbageCollectorMXBeans()) {
            if (gcBean instanceof NotificationEmitter) {
                ((NotificationEmitter) gcBean).addNotificationListener(gcNotificationListener, null, gcBean);
            }
        }

        log.info("Prometheus metrics set up");
    }

Source File: GcProfiler.java From cache2k-benchmark with Apache License 2.0

5 votes

@Override
public void beforeIteration(BenchmarkParams benchmarkParams, IterationParams iterationParams) {
  installHooks();

  long gcTime = 0;
  long gcCount = 0;
  for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
    gcCount += bean.getCollectionCount();
    gcTime += bean.getCollectionTime();
  }
  this.beforeGCCount = gcCount;
  this.beforeGCTime = gcTime;
  this.beforeAllocated = HotspotAllocationSnapshot.create();
  this.beforeTime = System.nanoTime();
}

Source File: GarbageCollectorStatistics.java From spark with GNU General Public License v3.0

5 votes

public static Map<String, GarbageCollectorStatistics> pollStats() {
    ImmutableMap.Builder<String, GarbageCollectorStatistics> stats = ImmutableMap.builder();
    for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
        stats.put(bean.getName(), new GarbageCollectorStatistics(bean));
    }
    return stats.build();
}

Source File: JVMGC.java From mpush with Apache License 2.0

5 votes

public JVMGC() {
    for (GarbageCollectorMXBean item : ManagementFactory.getGarbageCollectorMXBeans()) {
        String name = item.getName();
        if (youngGcName.contains(name)) {
            yongGc = item;
        } else if (fullGcName.contains(name)) {
            fullGc = item;
        }
    }
}

Source File: JmxMetricTrackerTest.java From apm-agent-java with Apache License 2.0

5 votes

@Test
void testGC() throws Exception {
    setConfig(JmxMetric.valueOf("object_name[java.lang:type=GarbageCollector,name=*] attribute[CollectionCount:metric_name=collection_count]"));
    setConfig(JmxMetric.valueOf("object_name[java.lang:type=GarbageCollector,name=*] attribute[CollectionCount:metric_name=collection_count] attribute[CollectionTime]"));
    for (GarbageCollectorMXBean gcBean : ManagementFactory.getGarbageCollectorMXBeans()) {
        String memoryManagerName = gcBean.getName();
        assertThat(metricRegistry.getGaugeValue("jvm.jmx.collection_count", Labels.Mutable.of("name", memoryManagerName).add("type", "GarbageCollector"))).isNotNegative();
        assertThat(metricRegistry.getGaugeValue("jvm.jmx.CollectionTime", Labels.Mutable.of("name", memoryManagerName).add("type", "GarbageCollector"))).isNotNegative();
    }
    printMetricSets();
}

Source File: OmServiceMngr.java From TarsJava with BSD 3-Clause "New" or "Revised" License

5 votes

public void initAndStartOmService() {
    Communicator communicator = CommunicatorFactory.getInstance().getCommunicator();
    String app = ConfigurationManager.getInstance().getServerConfig().getApplication();
    String serverName = ConfigurationManager.getInstance().getServerConfig().getServerName();
    String basePath = ConfigurationManager.getInstance().getServerConfig().getBasePath();
    String modualName = ConfigurationManager.getInstance().getServerConfig().getCommunicatorConfig().getModuleName();

    ConfigHelper.getInstance().setConfigInfo(communicator, app, serverName, basePath);
    NodeHelper.getInstance().setNodeInfo(communicator, app, serverName);
    NotifyHelper.getInstance().setNotifyInfo(communicator, app, serverName);
    PropertyReportHelper.getInstance().init(communicator, modualName);
    NodeHelper.getInstance().reportVersion(ClientVersion.getVersion());

    Policy avgPolicy = new CommonPropertyPolicy.Avg();
    Policy maxPolicy = new CommonPropertyPolicy.Max();
    PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropWaitTime, avgPolicy, maxPolicy);

    PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropHeapUsed, new MemoryHeapUsedAvg());
    PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropHeapCommitted, new MemoryHeapCommittedAvg());
    PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropHeapMax, new MemoryHeapMaxAvg());
    PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropThreadCount, new ThreadNumAvg());
    for (GarbageCollectorMXBean gcMXBean : ManagementFactory.getGarbageCollectorMXBeans()) {
        PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropGcCount + gcMXBean.getName(), new GCNumCount(gcMXBean.getName()));
        PropertyReportHelper.getInstance().createPropertyReporter(OmConstants.PropGcTime + gcMXBean.getName(), new GCTimeSum(gcMXBean.getName()));
    }

    ServerStatHelper.getInstance().init(communicator);
    TarsTraceZipkinConfiguration.getInstance().init();
    ScheduledServiceMngr.getInstance().start();
}

Source File: DashboardCommand.java From arthas with Apache License 2.0

5 votes

private static void addGcInfo(TableElement table) {
    List<GarbageCollectorMXBean> garbageCollectorMxBeans = ManagementFactory.getGarbageCollectorMXBeans();
    for (GarbageCollectorMXBean garbageCollectorMXBean : garbageCollectorMxBeans) {
        String name = garbageCollectorMXBean.getName();
        table.add(new RowElement().style(Decoration.bold.bold()).add("gc." + beautifyName(name) + ".count",
                "" + garbageCollectorMXBean.getCollectionCount()));
        table.row("gc." + beautifyName(name) + ".time(ms)", "" + garbageCollectorMXBean.getCollectionTime());
    }
}

Source File: MetricUtils.java From flink with Apache License 2.0

5 votes

private static void instantiateGarbageCollectorMetrics(MetricGroup metrics) {
	List<GarbageCollectorMXBean> garbageCollectors = ManagementFactory.getGarbageCollectorMXBeans();

	for (final GarbageCollectorMXBean garbageCollector: garbageCollectors) {
		MetricGroup gcGroup = metrics.addGroup(garbageCollector.getName());

		gcGroup.<Long, Gauge<Long>>gauge("Count", garbageCollector::getCollectionCount);
		gcGroup.<Long, Gauge<Long>>gauge("Time", garbageCollector::getCollectionTime);
	}
}

Source File: JVMMetrics.java From incubator-heron with Apache License 2.0

5 votes

private void updateGcTimes() {
  long totalTimeMs = 0;
  for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
    long collectionTimeMs = bean.getCollectionTime();
    totalTimeMs += collectionTimeMs;
    // Replace all non alpha-numeric characters to '-'
    String normalizedKeyName = bean.getName().replaceAll("[^\\w]", "-");
    jvmGCTimeMsPerGCType.safeScope(normalizedKeyName).setValue(collectionTimeMs);
  }
  jvmGCTimeMs.setValue(totalTimeMs);
}

Source File: JvmMetrics.java From hadoop with Apache License 2.0

5 votes

private void doGarbageCollectionUpdates() {
    List<GarbageCollectorMXBean> gcBeans =
            ManagementFactory.getGarbageCollectorMXBeans();
    long count = 0;
    long timeMillis = 0;
    for (GarbageCollectorMXBean gcBean : gcBeans) {
        count += gcBean.getCollectionCount();
        timeMillis += gcBean.getCollectionTime();
    }
    metrics.incrMetric("gcCount", (int)(count - gcCount));
    metrics.incrMetric("gcTimeMillis", (int)(timeMillis - gcTimeMillis));
    
    gcCount = count;
    gcTimeMillis = timeMillis;
}

Source File: GCHelper.java From openjdk-jdk8u with GNU General Public License v2.0

5 votes

public static CollectionSummary createFromMxBeans() {
    CollectionSummary summary = new CollectionSummary();
    List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
    for (int c=0; c<gcBeans.size(); c++) {
        GarbageCollectorMXBean currBean = gcBeans.get(c);
        Boolean isYoung = beanCollectorTypes.get(currBean.getName());
        assertNotNull(isYoung, "Unknown MXBean name: " + currBean.getName());
        long collectionTime = currBean.getCollectionTime() * 1000; // Convert from millis to micros.
        summary.add(currBean.getName(), isYoung.booleanValue(), currBean.getCollectionCount(), collectionTime);
    }
    return summary;
}

Source File: JvmMetrics.java From hadoop-gpu with Apache License 2.0

5 votes

private void doGarbageCollectionUpdates() {
    List<GarbageCollectorMXBean> gcBeans =
            ManagementFactory.getGarbageCollectorMXBeans();
    long count = 0;
    long timeMillis = 0;
    for (GarbageCollectorMXBean gcBean : gcBeans) {
        count += gcBean.getCollectionCount();
        timeMillis += gcBean.getCollectionTime();
    }
    metrics.incrMetric("gcCount", (int)(count - gcCount));
    metrics.incrMetric("gcTimeMillis", (int)(timeMillis - gcTimeMillis));
    
    gcCount = count;
    gcTimeMillis = timeMillis;
}

Source File: GCNotifications.java From garmadon with Apache License 2.0

4 votes

public void subscribe(BiConsumer<Long, ?> printer) {
    for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
        NotificationEmitter emitter = (NotificationEmitter) bean;
        emitter.addNotificationListener(listener, null, printer);
    }
}

Source File: Task.java From big-c with Apache License 2.0

4 votes

public GcTimeUpdater() {
  this.gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
  getElapsedGc(); // Initialize 'lastGcMillis' with the current time spent.
}

Source File: GcTimeUpdater.java From tez with Apache License 2.0

4 votes

public GcTimeUpdater(TezCounters counters) {
  this.gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
  getElapsedGc(); // Initialize 'lastGcMillis' with the current time spent.
  this.counters = counters;
}

Source File: AbstractStatisticsCollector.java From database with GNU General Public License v2.0

2 votes

/**
    * Adds/updates counters relating to JVM Garbage Collection. These counters
    * should be located within a per-service path.
    * 
    * @param counterSet
    *            The counters set that is the direct parent.
    */
static public void addGarbageCollectorMXBeanCounters(
		final CounterSet counterSet) {

       final String name_pools = "Memory Pool Names";

       final String name_count = "Collection Count";

       final String name_time = "Cumulative Collection Time";

       synchronized (counterSet) {

           final List<GarbageCollectorMXBean> list = ManagementFactory
                   .getGarbageCollectorMXBeans();

           for (final GarbageCollectorMXBean bean : list) {

               final String name = bean.getName();

               // counter set for this GC bean (may be pre-existing).
               final CounterSet tmp = counterSet.makePath(name);

               synchronized (tmp) {

                   // memory pool names.
                   {
                       if (tmp.getChild(name_pools) == null) {
                           
                           tmp.addCounter(name_pools,
                                   new Instrument<String>() {

                                       @Override
                                       protected void sample() {

                                           setValue(Arrays.toString(bean
                                                   .getMemoryPoolNames()));

                                       }
                       
                           });
                       
                       }
                       
                   }

                   // collection count.
                   {
                       if (tmp.getChild(name_count) == null) {
                           tmp.addCounter(name_count, new Instrument<Long>() {

                               @Override
                               protected void sample() {

                                   setValue(bean.getCollectionCount());

                               }
                           });
                       }
                   }

                   // collection time.
                   {
                       if (tmp.getChild(name_time) == null) {
                           tmp.addCounter(name_time, new Instrument<Long>() {

                               @Override
                               protected void sample() {

                                   setValue(bean.getCollectionTime());

                               }
                           });
                       }
                   }

               }

           }

       }

   }

Java Code Examples for java.lang.management.ManagementFactory#getGarbageCollectorMXBeans()