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

Example 6 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project adempiere by adempiere.

the class MSystem method info.

//	getDBInfoSQL
/**
	 * 	Print info
	 */
public void info() {
    if (!CLogMgt.isLevelFine())
        return;
    //	OS
    //	OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    //	log.fine(os.getName() + " " + os.getVersion() + " " + os.getArch() 
    //		+ " Processors=" + os.getAvailableProcessors());
    //	Runtime
    RuntimeMXBean rt = ManagementFactory.getRuntimeMXBean();
    //	Memory
    if (CLogMgt.isLevelFiner()) {
        List<MemoryPoolMXBean> list = ManagementFactory.getMemoryPoolMXBeans();
        Iterator<MemoryPoolMXBean> it = list.iterator();
        while (it.hasNext()) {
            MemoryPoolMXBean pool = (MemoryPoolMXBean) it.next();
        /*
				log.finer(pool.getName() + " " + pool.getType() 
					+ ": " + new CMemoryUsage(pool.getUsage()));
				*/
        }
    } else {
        MemoryMXBean memory = ManagementFactory.getMemoryMXBean();
    // log.fine("VM: " + new CMemoryUsage(memory.getNonHeapMemoryUsage()));
    // log.fine("Heap: " + new CMemoryUsage(memory.getHeapMemoryUsage()));
    }
    //	Thread
    ThreadMXBean th = ManagementFactory.getThreadMXBean();
/*
		log.fine("Threads=" + th.getThreadCount()
			+ ", Peak=" + th.getPeakThreadCount()
			+ ", Demons=" + th.getDaemonThreadCount()
			+ ", Total=" + th.getTotalStartedThreadCount()
		);
		*/
}

Example 7 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project geode by apache.

the class MemoryMonitorJUnitTest method testCriticalHeapThreshold.

@Test
public void testCriticalHeapThreshold() throws Exception {
    final int toohigh = 101;
    final int toolow = -1;
    final float disabled = 0.0f;
    final float justright = 92.5f;
    final ResourceManager rm = this.cache.getResourceManager();
    long usageThreshold = -1;
    int once = 0;
    for (MemoryPoolMXBean p : ManagementFactory.getMemoryPoolMXBeans()) {
        if (p.isUsageThresholdSupported() && HeapMemoryMonitor.isTenured(p)) {
            usageThreshold = p.getUsageThreshold();
            once++;
        }
    }
    assertEquals("Expected only one pool to be assigned", 1, once);
    // Default test, current default is disabled
    assertEquals(rm.getCriticalHeapPercentage(), MemoryThresholds.DEFAULT_CRITICAL_PERCENTAGE, 0.01);
    NotificationEmitter emitter = (NotificationEmitter) ManagementFactory.getMemoryMXBean();
    try {
        emitter.removeNotificationListener(InternalResourceManager.getInternalResourceManager(cache).getHeapMonitor());
        assertTrue("Expected that the resource manager was not registered", false);
    } catch (ListenerNotFoundException expected) {
    }
    try {
        rm.setCriticalHeapPercentage(toohigh);
        assertTrue("Expected illegal argument exception for value " + toohigh, false);
    } catch (IllegalArgumentException toohi) {
    }
    try {
        rm.setCriticalHeapPercentage(toolow);
        assertTrue("Expected illegal argument exception for value " + toolow, false);
    } catch (IllegalArgumentException toohi) {
    }
    rm.setCriticalHeapPercentage(justright);
    emitter = (NotificationEmitter) ManagementFactory.getMemoryMXBean();
    {
        InternalResourceManager irm = InternalResourceManager.getInternalResourceManager(cache);
        HeapMemoryMonitor hmm = irm.getHeapMonitor();
        // Expect no exception for removal (it was installed during set)
        hmm.stopMonitoring();
    }
    assertEquals(rm.getCriticalHeapPercentage(), justright, 0.01);
    rm.setCriticalHeapPercentage(disabled);
    assertEquals(rm.getCriticalHeapPercentage(), disabled, 0.01);
    emitter = (NotificationEmitter) ManagementFactory.getMemoryMXBean();
    try {
        emitter.removeNotificationListener(InternalResourceManager.getInternalResourceManager(cache).getHeapMonitor());
        assertTrue("Expected that the resource manager was not registered", false);
    } catch (ListenerNotFoundException expected) {
    }
    // Assert the threshold was reset
    for (MemoryPoolMXBean p : ManagementFactory.getMemoryPoolMXBeans()) {
        if (HeapMemoryMonitor.isTenured(p)) {
            assertEquals(usageThreshold, p.getUsageThreshold());
        }
    }
}

Example 8 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project intellij-community by JetBrains.

the class PerformanceWatcher method initComponent.

@Override
public void initComponent() {
    if (shouldWatch()) {
        final AppScheduledExecutorService service = (AppScheduledExecutorService) AppExecutorUtil.getAppScheduledExecutorService();
        service.setNewThreadListener(new Consumer<Thread>() {

            private final int ourReasonableThreadPoolSize = Registry.intValue("core.pooled.threads");

            @Override
            public void consume(Thread thread) {
                if (service.getBackendPoolExecutorSize() > ourReasonableThreadPoolSize && ApplicationInfoImpl.getShadowInstance().isEAP()) {
                    File file = dumpThreads("newPooledThread/", true);
                    LOG.info("Not enough pooled threads" + (file != null ? "; dumped threads into file '" + file.getPath() + "'" : ""));
                }
            }
        });
        ApplicationManager.getApplication().executeOnPooledThread(() -> cleanOldFiles(myLogDir, 0));
        for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
            if ("Code Cache".equals(bean.getName())) {
                watchCodeCache(bean);
                break;
            }
        }
    }
}

Example 9 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project gephi by gephi.

the class MemoryStarvationManager method startup.

public void startup() {
    ((NotificationEmitter) ManagementFactory.getMemoryMXBean()).addNotificationListener(this, null, null);
    List<MemoryPoolMXBean> mpbeans = ManagementFactory.getMemoryPoolMXBeans();
    MemoryPoolMXBean biggestHeap = null;
    long biggestSize = 0;
    for (MemoryPoolMXBean b : mpbeans) {
        if (b.getType() == MemoryType.HEAP) {
            /* Here we are making the leap of faith that the biggest
                 * heap is the tenured heap
                 */
            long size = b.getUsage().getMax();
            if (size > biggestSize) {
                biggestSize = size;
                biggestHeap = b;
            }
        }
    }
    if (biggestHeap != null) {
        long usageThreshold = (long) (biggestSize - reservedMemory);
        biggestHeap.setUsageThreshold(usageThreshold);
        biggestHeap.setCollectionUsageThreshold(usageThreshold);
    }
}

Example 10 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project uavstack by uavorg.

the class JVMToolHelper method readHeapPoolUsage.

public static Map<String, Long> readHeapPoolUsage(List<MemoryPoolMXBean> pmbList) {
    Map<String, Long> m = new LinkedHashMap<String, Long>();
    for (MemoryPoolMXBean mpmb : pmbList) {
        String jvmMemPoolName = getHeapPoolName(mpmb.getName().trim());
        MemoryUsage mu = mpmb.getUsage();
        m.put(jvmMemPoolName + "_use", mu.getUsed());
        m.put(jvmMemPoolName + "_commit", mu.getCommitted());
        m.put(jvmMemPoolName + "_max", mu.getMax());
        m.put(jvmMemPoolName + "_init", mu.getInit());
    }
    return m;
}