Java Code Examples for java.lang.management.MemoryUsage#getMax()

The following examples show how to use java.lang.management.MemoryUsage#getMax() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: HeapMonitorSource.java    From flink-tutorials with Apache License 2.0 6 votes vote down vote up 
@Override
public void run(SourceFunction.SourceContext<HeapMetrics> sourceContext) throws Exception {
	LOG.info("starting HeapMonitorSource");

	int subtaskIndex = this.getRuntimeContext().getIndexOfThisSubtask();
	String hostname = InetAddress.getLocalHost().getHostName();

	while (running) {
		Thread.sleep(sleepMillis);

		for (MemoryPoolMXBean mpBean : ManagementFactory.getMemoryPoolMXBeans()) {
			if (mpBean.getType() == MemoryType.HEAP) {
				MemoryUsage memoryUsage = mpBean.getUsage();
				long used = memoryUsage.getUsed();
				long max = memoryUsage.getMax();

				synchronized (sourceContext.getCheckpointLock()) {
					sourceContext.collect(new HeapMetrics(mpBean.getName(), used, max, (double) used / max, subtaskIndex, hostname));
				}
			}
		}
	}
}
Example 2
Source File: MemorySampler.java    From kieker with Apache License 2.0 5 votes vote down vote up 
@Override
protected IMonitoringRecord[] createNewMonitoringRecords(final long timestamp, final String hostname, final String vmName,
		final IMonitoringController monitoringCtr) {
	if (!monitoringCtr.isProbeActivated(SignatureFactory.createJVMMemSignature())) {
		return new IMonitoringRecord[] {};
	}

	final MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
	final MemoryUsage heapMemoryUsage = memoryBean.getHeapMemoryUsage();
	final MemoryUsage nonHeapMemoryUsage = memoryBean.getNonHeapMemoryUsage();

	return new IMonitoringRecord[] { new MemoryRecord(timestamp, hostname, vmName, heapMemoryUsage.getMax(), heapMemoryUsage.getUsed(),
			heapMemoryUsage.getCommitted(), heapMemoryUsage.getInit(), nonHeapMemoryUsage.getMax(), nonHeapMemoryUsage.getUsed(),
			nonHeapMemoryUsage.getCommitted(), nonHeapMemoryUsage.getInit(), memoryBean.getObjectPendingFinalizationCount()), };
}
Example 3
Source File: MemoryPoolImpl.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
public void setUsageThreshold(long newThreshold) {
    if (!isUsageThresholdSupported()) {
        throw new UnsupportedOperationException(
            "Usage threshold is not supported");
    }

    Util.checkControlAccess();

    MemoryUsage usage = getUsage0();
    if (newThreshold < 0) {
        throw new IllegalArgumentException(
            "Invalid threshold: " + newThreshold);
    }

    if (usage.getMax() != -1 && newThreshold > usage.getMax()) {
        throw new IllegalArgumentException(
            "Invalid threshold: " + newThreshold +
            " must be <= maxSize." +
            " Committed = " + usage.getCommitted() +
            " Max = " + usage.getMax());
    }

    synchronized (this) {
        if (!usageSensorRegistered) {
            // pass the sensor to VM to begin monitoring
            usageSensorRegistered = true;
            setPoolUsageSensor(usageSensor);
        }
        setUsageThreshold0(usageThreshold, newThreshold);
        this.usageThreshold = newThreshold;
    }
}
Example 4
Source File: GridCapacityLoadTest.java    From ignite with Apache License 2.0 5 votes vote down vote up 
private static void printHeap(long init) {
    MemoryUsage heap = mem.getHeapMemoryUsage();

    long max = heap.getMax() - init;
    long used = heap.getUsed() - init;
    long left = max - used;

    X.println("Heap left: " + (left / (1024 * 1024)) + "MB");
}
Example 5
Source File: JvmMemoryMeasurementProvider.java    From jetlinks-community with Apache License 2.0 5 votes vote down vote up 
public static MemoryInfo of(MemoryUsage usage) {
    MemoryInfo info = new MemoryInfo();
    info.max = (usage.getMax()) / 1000 / 1000;
    info.used = usage.getUsed() / 1000 / 1000;
    info.usage = BigDecimal.valueOf(((double) usage.getUsed() / usage.getMax()) * 100D).setScale(2, ROUND_HALF_UP)
        .doubleValue();
    return info;
}
Example 6
Source File: MemoryPoolAdapter.java    From baratine with GNU General Public License v2.0 5 votes vote down vote up 
public long getTenuredMax()
  throws JMException
{
  CompositeData data
    = (CompositeData) _mbeanServer.getAttribute(getTenuredName(), "Usage");

  MemoryUsage usage = MemoryUsage.from(data);

  return usage.getMax();
}
Example 7
Source File: MemoryPoolAdapter.java    From baratine with GNU General Public License v2.0 5 votes vote down vote up 
public long getEdenFree()
  throws JMException
{
  CompositeData data
    = (CompositeData) _mbeanServer.getAttribute(getEdenName(), "Usage");

  MemoryUsage usage = MemoryUsage.from(data);

  return usage.getMax() - usage.getUsed();
}
Example 8
Source File: MemoryPoolAdapter.java    From baratine with GNU General Public License v2.0 5 votes vote down vote up 
public long getSurvivorFree()
  throws JMException
{
  CompositeData data
    = (CompositeData) _mbeanServer.getAttribute(getSurvivorName(), "Usage");

  MemoryUsage usage = MemoryUsage.from(data);

  return usage.getMax() - usage.getUsed();
}
Example 9
Source File: MemoryPoolAdapter.java    From baratine with GNU General Public License v2.0 5 votes vote down vote up 
public long getTenuredFree()
  throws JMException
{
    CompositeData data
    = (CompositeData) _mbeanServer.getAttribute(getTenuredName(), "Usage");

  MemoryUsage usage = MemoryUsage.from(data);

  return usage.getMax() - usage.getUsed();
}
Example 10
Source File: MemoryPoolImpl.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
public void setUsageThreshold(long newThreshold) {
    if (!isUsageThresholdSupported()) {
        throw new UnsupportedOperationException(
            "Usage threshold is not supported");
    }

    Util.checkControlAccess();

    MemoryUsage usage = getUsage0();
    if (newThreshold < 0) {
        throw new IllegalArgumentException(
            "Invalid threshold: " + newThreshold);
    }

    if (usage.getMax() != -1 && newThreshold > usage.getMax()) {
        throw new IllegalArgumentException(
            "Invalid threshold: " + newThreshold +
            " must be <= maxSize." +
            " Committed = " + usage.getCommitted() +
            " Max = " + usage.getMax());
    }

    synchronized (this) {
        if (!usageSensorRegistered) {
            // pass the sensor to VM to begin monitoring
            usageSensorRegistered = true;
            setPoolUsageSensor(usageSensor);
        }
        setUsageThreshold0(usageThreshold, newThreshold);
        this.usageThreshold = newThreshold;
    }
}
Example 11
Source File: DiagnosticTask.java    From netbeans with Apache License 2.0 5 votes vote down vote up 
private void logMemoryUsage(StringBuilder sb, MemoryUsage usage, String label) {
//        long used, commited;
        long init, max;
        init = usage.getInit();
//        used = usage.getUsed();
//        commited = usage.getCommitted();
        max = usage.getMax();
//        sb.append(label).append(" usage: used ").append(formatBytes(used)) // NOI18N
//                .append(" of ").append(formatBytes(commited)); // NOI18N
        sb.append(label).append(" usage: initial ").append(formatBytes(init)) // NOI18N
                .append(" maximum ").append(formatBytes(max)).append('\n'); // NOI18N
    }
Example 12
Source File: TestExcessGCLockerCollections.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public void handleNotification(Notification notification, Object handback) {
    try {
        if (notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
            GarbageCollectionNotificationInfo info =
                    GarbageCollectionNotificationInfo.from((CompositeData) notification.getUserData());

            String gc_cause = info.getGcCause();

            if (gc_cause.equals(TestExcessGCLockerCollectionsStringConstants.GCLOCKER_CAUSE)) {
                Map<String, MemoryUsage> memory_before_gc = info.getGcInfo().getMemoryUsageBeforeGc();

                for (String newGenPoolName : newGenPoolNames) {
                    MemoryUsage usage = memory_before_gc.get(newGenPoolName);
                    if (usage == null) continue;

                    double startTime = ((double) info.getGcInfo().getStartTime()) / 1000.0;
                    long used = usage.getUsed();
                    long committed = usage.getCommitted();
                    long max = usage.getMax();
                    double used_percent = (((double) used) / Math.max(committed, max)) * 100.0;

                    System.out.printf("%6.3f: (%s) %d/%d/%d, %8.4f%% (%s)\n",
                                      startTime, gc_cause, used, committed, max, used_percent,
                                      ((used_percent < MIN_USED_PERCENT) ? TestExcessGCLockerCollectionsStringConstants.USED_TOO_LOW
                                                                         : TestExcessGCLockerCollectionsStringConstants.USED_OK));
                }
            }
        }
    } catch (RuntimeException ex) {
        System.err.println("Exception during notification processing:" + ex);
        ex.printStackTrace();
    }
}
Example 13
Source File: MemoryPoolImpl.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
public void setCollectionUsageThreshold(long newThreshold) {
    if (!isCollectionUsageThresholdSupported()) {
        throw new UnsupportedOperationException(
            "CollectionUsage threshold is not supported");
    }

    Util.checkControlAccess();

    MemoryUsage usage = getUsage0();
    if (newThreshold < 0) {
        throw new IllegalArgumentException(
            "Invalid threshold: " + newThreshold);
    }

    if (usage.getMax() != -1 && newThreshold > usage.getMax()) {
        throw new IllegalArgumentException(
            "Invalid threshold: " + newThreshold +
                 " > max (" + usage.getMax() + ").");
    }

    synchronized (this) {
        if (!gcSensorRegistered) {
            // pass the sensor to VM to begin monitoring
            gcSensorRegistered = true;
            setPoolCollectionSensor(gcSensor);
        }
        setCollectionThreshold0(collectionThreshold, newThreshold);
        this.collectionThreshold = newThreshold;
    }
}
Example 14
Source File: VMInfo.java    From vjtools with Apache License 2.0 4 votes vote down vote up 
public Usage(MemoryUsage jmxUsage) {
	this(jmxUsage.getUsed(), jmxUsage.getCommitted(), jmxUsage.getMax());
}
Example 15
Source File: MemoryUsageCompositeData.java    From jdk8u_jdk with GNU General Public License v2.0 4 votes vote down vote up 
public static void createGoodCompositeData() throws Exception {
    final int K = 1024;
    // these values are synchronized with the item names
    final Object[] values = {
        new Long(5 * K),  // committed
        new Long(1 * K),  // init
        new Long(10 * K), // max
        new Long(2 * K),  // used
        "Dummy",
        "Dummy",
    };

    CompositeType muct =
        new CompositeType("MyMemoryUsageCompositeType",
                          "CompositeType for MemoryUsage",
                          memoryUsageItemNames,
                          memoryUsageItemNames,
                          memoryUsageItemTypes);
    CompositeData cd =
        new CompositeDataSupport(muct,
                                 memoryUsageItemNames,
                                 values);
    MemoryUsage u = MemoryUsage.from(cd);
    if (u.getInit() != ((Long) values[INIT]).longValue()) {
        throw new RuntimeException("init = " + u.getInit() +
           " expected = " + values[INIT]);
    }
    if (u.getUsed() != ((Long) values[USED]).longValue()) {
        throw new RuntimeException("used = " + u.getUsed() +
           " expected = " + values[USED]);
    }
    if (u.getCommitted() != ((Long) values[COMMITTED]).longValue()) {
        throw new RuntimeException("committed = " + u.getCommitted() +
           " expected = " + values[COMMITTED]);
    }
    if (u.getMax() != ((Long) values[MAX]).longValue()) {
        throw new RuntimeException("max = " + u.getMax() +
           " expected = " + values[MAX]);
    }
    System.out.println(u);
}
Example 16
Source File: MemoryUsageCompositeData.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up 
public static void createGoodCompositeData() throws Exception {
    final int K = 1024;
    // these values are synchronized with the item names
    final Object[] values = {
        new Long(5 * K),  // committed
        new Long(1 * K),  // init
        new Long(10 * K), // max
        new Long(2 * K),  // used
        "Dummy",
        "Dummy",
    };

    CompositeType muct =
        new CompositeType("MyMemoryUsageCompositeType",
                          "CompositeType for MemoryUsage",
                          memoryUsageItemNames,
                          memoryUsageItemNames,
                          memoryUsageItemTypes);
    CompositeData cd =
        new CompositeDataSupport(muct,
                                 memoryUsageItemNames,
                                 values);
    MemoryUsage u = MemoryUsage.from(cd);
    if (u.getInit() != ((Long) values[INIT]).longValue()) {
        throw new RuntimeException("init = " + u.getInit() +
           " expected = " + values[INIT]);
    }
    if (u.getUsed() != ((Long) values[USED]).longValue()) {
        throw new RuntimeException("used = " + u.getUsed() +
           " expected = " + values[USED]);
    }
    if (u.getCommitted() != ((Long) values[COMMITTED]).longValue()) {
        throw new RuntimeException("committed = " + u.getCommitted() +
           " expected = " + values[COMMITTED]);
    }
    if (u.getMax() != ((Long) values[MAX]).longValue()) {
        throw new RuntimeException("max = " + u.getMax() +
           " expected = " + values[MAX]);
    }
    System.out.println(u);
}
Example 17
Source File: ProactiveGcTask.java    From feeyo-redisproxy with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up 
private long getMemoryPoolMaxOrCommitted(MemoryPoolMXBean memoryPool) {
	MemoryUsage usage = memoryPool.getUsage();
	long max = usage.getMax();
	return max < 0 ? usage.getCommitted() : max;
}
Example 18
Source File: Fawe.java    From FastAsyncWorldedit with GNU General Public License v3.0 4 votes vote down vote up 
private void setupMemoryListener() {
    if (Settings.IMP.MAX_MEMORY_PERCENT < 1 || Settings.IMP.MAX_MEMORY_PERCENT > 99) {
        return;
    }
    try {
        final MemoryMXBean memBean = ManagementFactory.getMemoryMXBean();
        final NotificationEmitter ne = (NotificationEmitter) memBean;

        ne.addNotificationListener(new NotificationListener() {
            @Override
            public void handleNotification(final Notification notification, final Object handback) {
                final long heapSize = Runtime.getRuntime().totalMemory();
                final long heapMaxSize = Runtime.getRuntime().maxMemory();
                if (heapSize < heapMaxSize) {
                    return;
                }
                MemUtil.memoryLimitedTask();
            }
        }, null, null);

        final List<MemoryPoolMXBean> memPools = ManagementFactory.getMemoryPoolMXBeans();
        for (final MemoryPoolMXBean mp : memPools) {
            if (mp.isUsageThresholdSupported()) {
                final MemoryUsage mu = mp.getUsage();
                final long max = mu.getMax();
                if (max < 0) {
                    continue;
                }
                final long alert = (max * Settings.IMP.MAX_MEMORY_PERCENT) / 100;
                mp.setUsageThreshold(alert);
            }
        }
    } catch (Throwable e) {
        debug("====== MEMORY LISTENER ERROR ======");
        MainUtil.handleError(e, false);
        debug("===================================");
        debug("FAWE needs access to the JVM memory system:");
        debug(" - Change your Java security settings");
        debug(" - Disable this with `max-memory-percent: -1`");
        debug("===================================");
    }
}
Example 19
Source File: JvmTools.java    From sofa-jraft with Apache License 2.0 4 votes vote down vote up 
/**
 * Returns the heap memory used for the current java process.
 */
public static double memoryUsed() throws Exception {
    final MemoryUsage heapMemoryUsage = MXBeanHolder.memoryMxBean.getHeapMemoryUsage();
    return (double) (heapMemoryUsage.getUsed()) / heapMemoryUsage.getMax();
}
Example 20
Source File: MemoryUsageCompositeData.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
public static void createGoodCompositeData() throws Exception {
    final int K = 1024;
    // these values are synchronized with the item names
    final Object[] values = {
        new Long(5 * K),  // committed
        new Long(1 * K),  // init
        new Long(10 * K), // max
        new Long(2 * K),  // used
        "Dummy",
        "Dummy",
    };

    CompositeType muct =
        new CompositeType("MyMemoryUsageCompositeType",
                          "CompositeType for MemoryUsage",
                          memoryUsageItemNames,
                          memoryUsageItemNames,
                          memoryUsageItemTypes);
    CompositeData cd =
        new CompositeDataSupport(muct,
                                 memoryUsageItemNames,
                                 values);
    MemoryUsage u = MemoryUsage.from(cd);
    if (u.getInit() != ((Long) values[INIT]).longValue()) {
        throw new RuntimeException("init = " + u.getInit() +
           " expected = " + values[INIT]);
    }
    if (u.getUsed() != ((Long) values[USED]).longValue()) {
        throw new RuntimeException("used = " + u.getUsed() +
           " expected = " + values[USED]);
    }
    if (u.getCommitted() != ((Long) values[COMMITTED]).longValue()) {
        throw new RuntimeException("committed = " + u.getCommitted() +
           " expected = " + values[COMMITTED]);
    }
    if (u.getMax() != ((Long) values[MAX]).longValue()) {
        throw new RuntimeException("max = " + u.getMax() +
           " expected = " + values[MAX]);
    }
    System.out.println(u);
}