Examples with GarbageCollectorMXBean java.lang.management.GarbageCollectorMXBean used on opensource projects

Example 6 with GarbageCollectorMXBean

use of java.lang.management.GarbageCollectorMXBean in project gradle by gradle.

the class GarbageCollectionCheck method run.

@Override
public void run() {
    List<GarbageCollectorMXBean> garbageCollectorMXBeans = ManagementFactory.getGarbageCollectorMXBeans();
    GarbageCollectorMXBean garbageCollectorMXBean = CollectionUtils.findFirst(garbageCollectorMXBeans, new Spec<GarbageCollectorMXBean>() {

        @Override
        public boolean isSatisfiedBy(GarbageCollectorMXBean mbean) {
            return mbean.getName().equals(garbageCollector);
        }
    });
    List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();
    for (MemoryPoolMXBean memoryPoolMXBean : memoryPoolMXBeans) {
        String pool = memoryPoolMXBean.getName();
        if (memoryPools.contains(pool)) {
            GarbageCollectionEvent event = new GarbageCollectionEvent(System.currentTimeMillis(), memoryPoolMXBean.getCollectionUsage(), garbageCollectorMXBean.getCollectionCount());
            events.get(pool).slideAndInsert(event);
        }
    }
}

Example 7 with GarbageCollectorMXBean

use of java.lang.management.GarbageCollectorMXBean in project bazel by bazelbuild.

the class GCStatsRecorder method getCurrentGcStats.

public Iterable<GCStat> getCurrentGcStats() {
    List<GCStat> stats = new ArrayList<>();
    for (GarbageCollectorMXBean mxBean : mxBeans) {
        String name = mxBean.getName();
        GCStat initStat = Preconditions.checkNotNull(initialData.get(name));
        stats.add(new GCStat(name, mxBean.getCollectionCount() - initStat.getNumCollections(), mxBean.getCollectionTime() - initStat.getTotalTimeInMs()));
    }
    return stats;
}

Example 8 with GarbageCollectorMXBean

use of java.lang.management.GarbageCollectorMXBean in project hadoop by apache.

the class JvmPauseMonitor method getGcTimes.

private Map<String, GcTimes> getGcTimes() {
    Map<String, GcTimes> map = Maps.newHashMap();
    List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
    for (GarbageCollectorMXBean gcBean : gcBeans) {
        map.put(gcBean.getName(), new GcTimes(gcBean));
    }
    return map;
}

Example 9 with GarbageCollectorMXBean

use of java.lang.management.GarbageCollectorMXBean in project flink by apache.

the class TaskExecutorMetricsInitializer method instantiateGarbageCollectorMetrics.

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", new Gauge<Long>() {

            @Override
            public Long getValue() {
                return garbageCollector.getCollectionCount();
            }
        });
        gcGroup.<Long, Gauge<Long>>gauge("Time", new Gauge<Long>() {

            @Override
            public Long getValue() {
                return garbageCollector.getCollectionTime();
            }
        });
    }
}

Example 10 with GarbageCollectorMXBean

use of java.lang.management.GarbageCollectorMXBean in project flink by apache.

the class MemoryLogger method getGarbageCollectorStatsAsString.

/**
	 * Gets the garbage collection statistics from the JVM.
	 *
	 * @param gcMXBeans The collection of garbage collector beans.
	 * @return A string denoting the number of times and total elapsed time in garbage collection.
	 */
public static String getGarbageCollectorStatsAsString(List<GarbageCollectorMXBean> gcMXBeans) {
    StringBuilder bld = new StringBuilder("Garbage collector stats: ");
    for (GarbageCollectorMXBean bean : gcMXBeans) {
        bld.append('[').append(bean.getName()).append(", GC TIME (ms): ").append(bean.getCollectionTime());
        bld.append(", GC COUNT: ").append(bean.getCollectionCount()).append(']');
        bld.append(", ");
    }
    if (!gcMXBeans.isEmpty()) {
        bld.setLength(bld.length() - 2);
    }
    return bld.toString();
}