Java Code Examples for com.sun.management.GarbageCollectionNotificationInfo#getGcCause()
The following examples show how to use
com.sun.management.GarbageCollectionNotificationInfo#getGcCause() .
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Example 1
| Source File: TestExcessGCLockerCollections.java From TencentKona-8 with GNU General Public License v2.0 | 5 votes |
|
@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 2
| Source File: LogGCNotifications.java From garmadon with Apache License 2.0 | 5 votes |
|
static void handleHSNotification(Notification notification, Object handback) {
BiConsumer<Long, String> printer = (BiConsumer<Long, String>) handback;
GarbageCollectionNotificationInfo gcNotifInfo = GarbageCollectionNotificationInfo.from((CompositeData) notification.getUserData());
GcInfo gcInfo = gcNotifInfo.getGcInfo();
long start = gcInfo.getStartTime();
long end = gcInfo.getEndTime();
StringBuilder sb = new StringBuilder();
sb.append(gcNotifInfo.getGcName());
sb.append(" occurred at ");
long serverStartTime = ManagementFactory.getRuntimeMXBean().getStartTime();
sb.append(GC_TIME_FORMAT.get().format(new Date(start + serverStartTime)));
sb.append(", took ");
sb.append(end - start);
sb.append("ms");
String cause = gcNotifInfo.getGcCause();
if (cause != null) {
sb.append(" (");
sb.append(cause);
sb.append(") ");
}
Map<String, MemoryUsage> memoryUsageBeforeGc = gcInfo.getMemoryUsageBeforeGc();
Map<String, MemoryUsage> memoryUsageAfterGc = gcInfo.getMemoryUsageAfterGc();
for (Map.Entry<String, MemoryUsage> entry : memoryUsageAfterGc.entrySet()) {
MemoryUsage before = memoryUsageBeforeGc.get(entry.getKey());
MemoryUsage after = entry.getValue();
long usedDelta = (before != null) ? (after.getUsed() - before.getUsed()) / 1024 : 0;
if (usedDelta != 0) {
sb.append(" ");
sb.append(MXBeanHelper.normalizeName(entry.getKey()));
sb.append("[").append(usedDelta > 0 ? "+" : "").append(usedDelta).append("]");
sb.append("(").append(before.getUsed() / 1024).append("->").append(after.getUsed() / 1024).append(")");
}
}
printer.accept(start, sb.toString());
}
Example 3
| Source File: TestExcessGCLockerCollections.java From openjdk-jdk8u with GNU General Public License v2.0 | 5 votes |
|
@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 4
| Source File: JvmHeapPressureMetrics.java From micrometer with Apache License 2.0 | 5 votes |
|
private void monitor() {
double maxOldGen = JvmMemory.getOldGen().map(mem -> JvmMemory.getUsageValue(mem, MemoryUsage::getMax)).orElse(0.0);
for (GarbageCollectorMXBean mbean : ManagementFactory.getGarbageCollectorMXBeans()) {
if (!(mbean instanceof NotificationEmitter)) {
continue;
}
NotificationListener notificationListener = (notification, ref) -> {
if (!notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
return;
}
CompositeData cd = (CompositeData) notification.getUserData();
GarbageCollectionNotificationInfo notificationInfo = GarbageCollectionNotificationInfo.from(cd);
String gcCause = notificationInfo.getGcCause();
GcInfo gcInfo = notificationInfo.getGcInfo();
long duration = gcInfo.getDuration();
if (!JvmMemory.isConcurrentPhase(gcCause)) {
gcPauseSum.record(duration);
}
Map<String, MemoryUsage> after = gcInfo.getMemoryUsageAfterGc();
if (oldGenPoolName != null) {
final long oldAfter = after.get(oldGenPoolName).getUsed();
lastOldGenUsageAfterGc.set(oldAfter / maxOldGen);
}
};
NotificationEmitter notificationEmitter = (NotificationEmitter) mbean;
notificationEmitter.addNotificationListener(notificationListener, null, null);
notificationListenerCleanUpRunnables.add(() -> {
try {
notificationEmitter.removeNotificationListener(notificationListener);
} catch (ListenerNotFoundException ignore) {
}
});
}
}
Example 5
| Source File: GarbageCollection.java From tracing-framework with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
@Override
public void handleNotification(Notification notification, Object handback) {
// Make sure it's the right notification type
if (!notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION))
return;
// Extract the GcInfo as appropriate, working around the OpenJDK GcInfo
// cycles/milliseconds bug
GarbageCollectorMXBean bean = (GarbageCollectorMXBean) handback;
GarbageCollectionNotificationInfo info = getInfo(notification);
GcInfo gc = getGcInfo(info, bean);
// Extract the fields we want to include in the X-Trace report
String startTime = Long.toString(JVMStartTimeMillis + gc.getStartTime());
String duration = Long.toString(gc.getDuration());
String action = info.getGcAction();
String cause = info.getGcCause();
String name = info.getGcName();
XTraceReport report = XTraceReport.create();
report.addStandardFields();
report.builder.setTaskId(taskid);
report.applyDecorators();
report.setMessage("Garbage Collection Event");
report.builder.addKey("Operation").addValue("GC");
report.builder.addKey("GcStart").addValue(startTime);
report.builder.addKey("GcDuration").addValue(duration);
report.builder.addKey("GcAction").addValue(action);
report.builder.addKey("GcCause").addValue(cause);
report.builder.addKey("GcName").addValue(name);
report.builder.addTags("GarbageCollection");
report.builder.addTags(Utils.getProcessName());
XTrace.getDefaultReporter().send(report);
}
Example 6
| Source File: ProtobufGCNotifications.java From garmadon with Apache License 2.0 | 4 votes |
|
static void handleHSNotification(Notification notification, Object handback) {
BiConsumer<Long, JVMStatisticsEventsProtos.GCStatisticsData> printer = (BiConsumer<Long, JVMStatisticsEventsProtos.GCStatisticsData>) handback;
GarbageCollectionNotificationInfo gcNotifInfo = GarbageCollectionNotificationInfo.from((CompositeData) notification.getUserData());
GcInfo gcInfo = gcNotifInfo.getGcInfo();
GcEvent gcEvent = new GcEvent(gcInfo.getStartTime(), gcInfo.getEndTime());
long pauseTime = gcEvent.getPauseDuration();
String collectorName = gcNotifInfo.getGcName();
long serverStartTime = ManagementFactory.getRuntimeMXBean().getStartTime();
long timestamp = gcInfo.getStartTime() + serverStartTime;
String cause = gcNotifInfo.getGcCause();
JVMStatisticsEventsProtos.GCStatisticsData.Builder builder = JVMStatisticsEventsProtos.GCStatisticsData.newBuilder();
builder.setPauseTime(pauseTime);
builder.setGcPauseRatio1Min((float) computeTotalPauseTime(gcEvents, gcEvent) / MILLIS_MINUTE * 100);
gcEvents.add(gcEvent);
builder.setCollectorName(collectorName);
builder.setCause(cause);
Map<String, MemoryUsage> memoryUsageBeforeGc = gcInfo.getMemoryUsageBeforeGc();
Map<String, MemoryUsage> memoryUsageAfterGc = gcInfo.getMemoryUsageAfterGc();
for (Map.Entry<String, MemoryUsage> entry : memoryUsageAfterGc.entrySet()) {
MemoryUsage before = memoryUsageBeforeGc.get(entry.getKey());
MemoryUsage after = entry.getValue();
switch (MXBeanHelper.normalizeName(entry.getKey())) {
case MXBeanHelper.MEMORY_POOL_CODE_HEADER:
builder.setCodeBefore(before.getUsed());
builder.setCodeAfter(after.getUsed());
break;
case MXBeanHelper.MEMORY_POOL_PERM_HEADER:
case MXBeanHelper.MEMORY_POOL_METASPACE_HEADER:
builder.setMetaspaceBefore(before.getUsed());
builder.setMetaspaceAfter(after.getUsed());
break;
case MXBeanHelper.MEMORY_POOL_EDEN_HEADER:
builder.setEdenBefore(before.getUsed());
builder.setEdenAfter(after.getUsed());
break;
case MXBeanHelper.MEMORY_POOL_SURVIVOR_HEADER:
builder.setSurvivorBefore(before.getUsed());
builder.setSurvivorAfter(after.getUsed());
break;
case MXBeanHelper.MEMORY_POOL_OLD_HEADER:
builder.setOldBefore(before.getUsed());
builder.setOldAfter(after.getUsed());
break;
case MXBeanHelper.MEMORY_POOL_COMPRESSEDCLASSPACE_HEADER:
// ignore
break;
default:
throw new UnsupportedOperationException(entry.getKey() + " not supported");
}
}
printer.accept(timestamp, builder.build());
}
Example 7
| Source File: GcMonitoringModule.java From spark with GNU General Public License v3.0 | 4 votes |
|
@Override
public void onGc(GarbageCollectionNotificationInfo data) {
String gcType;
if (data.getGcAction().equals("end of minor GC")) {
gcType = "Young Gen";
} else if (data.getGcAction().equals("end of major GC")) {
gcType = "Old Gen";
} else {
gcType = data.getGcAction();
}
String gcCause = data.getGcCause() != null ? " (cause = " + data.getGcCause() + ")" : "";
Map<String, MemoryUsage> beforeUsages = data.getGcInfo().getMemoryUsageBeforeGc();
Map<String, MemoryUsage> afterUsages = data.getGcInfo().getMemoryUsageAfterGc();
this.platform.getPlugin().executeAsync(() -> {
List<Component> report = new LinkedList<>();
report.add(CommandResponseHandler.applyPrefix(TextComponent.builder("").color(TextColor.GRAY)
.append(TextComponent.of(gcType + " "))
.append(TextComponent.of("GC", TextColor.RED))
.append(TextComponent.of(" lasting "))
.append(TextComponent.of(df.format(data.getGcInfo().getDuration()), TextColor.GOLD))
.append(TextComponent.of(" ms." + gcCause))
.build()
));
for (Map.Entry<String, MemoryUsage> entry : afterUsages.entrySet()) {
String type = entry.getKey();
MemoryUsage after = entry.getValue();
MemoryUsage before = beforeUsages.get(type);
if (before == null) {
continue;
}
long diff = before.getUsed() - after.getUsed();
if (diff == 0) {
continue;
}
if (diff > 0) {
report.add(TextComponent.builder(" ")
.append(TextComponent.of(FormatUtil.formatBytes(diff), TextColor.GOLD))
.append(TextComponent.of(" freed from ", TextColor.DARK_GRAY))
.append(TextComponent.of(type, TextColor.GRAY))
.build()
);
report.add(TextComponent.builder(" ")
.append(TextComponent.of(FormatUtil.formatBytes(before.getUsed()), TextColor.GRAY))
.append(TextComponent.of(" → ", TextColor.DARK_GRAY))
.append(TextComponent.of(FormatUtil.formatBytes(after.getUsed()), TextColor.GRAY))
.append(TextComponent.space())
.append(TextComponent.of("(", TextColor.DARK_GRAY))
.append(TextComponent.of(FormatUtil.percent(diff, before.getUsed()), TextColor.WHITE))
.append(TextComponent.of(")", TextColor.DARK_GRAY))
.build()
);
} else {
report.add(TextComponent.builder(" ")
.append(TextComponent.of(FormatUtil.formatBytes(-diff), TextColor.GOLD))
.append(TextComponent.of(" moved to ", TextColor.DARK_GRAY))
.append(TextComponent.of(type, TextColor.GRAY))
.build()
);
report.add(TextComponent.builder(" ")
.append(TextComponent.of(FormatUtil.formatBytes(before.getUsed()), TextColor.GRAY))
.append(TextComponent.of(" → ", TextColor.DARK_GRAY))
.append(TextComponent.of(FormatUtil.formatBytes(after.getUsed()), TextColor.GRAY))
.build()
);
}
}
report.forEach(this.resp::broadcast);
});
}
Example 8
| Source File: RingBufferGarbageCollectionLog.java From nifi with Apache License 2.0 | 4 votes |
|
@Override
public void handleNotification(final Notification notification, final Object handback) {
if (!notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
return;
}
final CompositeData compositeData = (CompositeData) notification.getUserData();
final GarbageCollectionNotificationInfo gcNotification = GarbageCollectionNotificationInfo.from(compositeData);
final GcInfo gcInfo = gcNotification.getGcInfo();
final String gcName = gcNotification.getGcName();
final String action = gcNotification.getGcAction();
final String cause = gcNotification.getGcCause();
final long startTime = jvmStartTime + gcInfo.getStartTime();
final long endTime = jvmStartTime + gcInfo.getEndTime();
final Map<String, MemoryUsage> usageAfter = gcInfo.getMemoryUsageAfterGc();
final Map<String, MemoryUsage> usageBefore = gcInfo.getMemoryUsageBeforeGc();
final List<GarbageCollectionEvent.GarbageCollectionHeapSize> heapSizes = new ArrayList<>();
for (final Map.Entry<String, MemoryUsage> entry : usageAfter.entrySet()) {
final MemoryUsage before = usageBefore.get(entry.getKey());
if (before == null) {
continue;
}
final MemoryUsage after = entry.getValue();
if (after.getUsed() == before.getUsed()) {
continue;
}
heapSizes.add(new StandardGarbageCollectionEvent.StandardGarbageCollectionHeapSize(entry.getKey(), before.getUsed(), after.getUsed()));
}
final GarbageCollectionEvent event = new StandardGarbageCollectionEvent(gcName, action, cause, startTime, endTime, heapSizes);
if (gcInfo.getDuration() >= minDurationThreshold) {
events.add(event);
}
synchronized (this) {
final Tuple<Long, Long> previousTuple = timeAndCountPerAction.get(action);
if (previousTuple == null){
timeAndCountPerAction.put(action, new Tuple<>(gcInfo.getDuration(), 1L));
} else {
timeAndCountPerAction.put(action, new Tuple<>(gcInfo.getDuration() + previousTuple.getKey(), 1L + previousTuple.getValue()));
}
if (maxDurationEvent == null || event.getDuration() > maxDurationEvent.getDuration()) {
maxDurationEvent = event;
}
}
}
