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

Example 1 with MemoryMXBean

use of java.lang.management.MemoryMXBean in project jetty.project by eclipse.

the class MemoryUsageTest method testMemoryUsage.

@SuppressWarnings("unused")
@Test
public void testMemoryUsage() throws Exception {
    int sessionCount = 1000;
    Session[] sessions = new Session[sessionCount];
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    System.gc();
    MemoryUsage heapBefore = memoryMXBean.getHeapMemoryUsage();
    MemoryUsage nonHeapBefore = memoryMXBean.getNonHeapMemoryUsage();
    URI uri = URI.create("ws://localhost:" + connector.getLocalPort());
    final CountDownLatch latch = new CountDownLatch(sessionCount);
    for (int i = 0; i < sessionCount; ++i) {
        sessions[i] = client.connectToServer(new EndpointAdapter() {

            @Override
            public void onMessage(String message) {
                latch.countDown();
            }
        }, uri);
    }
    for (int i = 0; i < sessionCount; ++i) {
        sessions[i].getBasicRemote().sendText("OK");
    }
    latch.await(5 * sessionCount, TimeUnit.MILLISECONDS);
    System.gc();
    MemoryUsage heapAfter = memoryMXBean.getHeapMemoryUsage();
    MemoryUsage nonHeapAfter = memoryMXBean.getNonHeapMemoryUsage();
    long heapUsed = heapAfter.getUsed() - heapBefore.getUsed();
    long nonHeapUsed = nonHeapAfter.getUsed() - nonHeapBefore.getUsed();
    System.out.println("heapUsed = " + heapUsed);
    System.out.println("nonHeapUsed = " + nonHeapUsed);
    //        new CountDownLatch(1).await();
    // Assume no more than 25 KiB per session pair (client and server).
    long expected = 25 * 1024 * sessionCount;
    Assert.assertThat("heap used", heapUsed, lessThan(expected));
}

Example 2 with MemoryMXBean

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

the class TaskExecutorMetricsInitializer method instantiateMemoryMetrics.

private static void instantiateMemoryMetrics(MetricGroup metrics) {
    final MemoryMXBean mxBean = ManagementFactory.getMemoryMXBean();
    MetricGroup heap = metrics.addGroup("Heap");
    heap.<Long, Gauge<Long>>gauge("Used", new Gauge<Long>() {

        @Override
        public Long getValue() {
            return mxBean.getHeapMemoryUsage().getUsed();
        }
    });
    heap.<Long, Gauge<Long>>gauge("Committed", new Gauge<Long>() {

        @Override
        public Long getValue() {
            return mxBean.getHeapMemoryUsage().getCommitted();
        }
    });
    heap.<Long, Gauge<Long>>gauge("Max", new Gauge<Long>() {

        @Override
        public Long getValue() {
            return mxBean.getHeapMemoryUsage().getMax();
        }
    });
    MetricGroup nonHeap = metrics.addGroup("NonHeap");
    nonHeap.<Long, Gauge<Long>>gauge("Used", new Gauge<Long>() {

        @Override
        public Long getValue() {
            return mxBean.getNonHeapMemoryUsage().getUsed();
        }
    });
    nonHeap.<Long, Gauge<Long>>gauge("Committed", new Gauge<Long>() {

        @Override
        public Long getValue() {
            return mxBean.getNonHeapMemoryUsage().getCommitted();
        }
    });
    nonHeap.<Long, Gauge<Long>>gauge("Max", new Gauge<Long>() {

        @Override
        public Long getValue() {
            return mxBean.getNonHeapMemoryUsage().getMax();
        }
    });
    final MBeanServer con = ManagementFactory.getPlatformMBeanServer();
    final String directBufferPoolName = "java.nio:type=BufferPool,name=direct";
    try {
        final ObjectName directObjectName = new ObjectName(directBufferPoolName);
        MetricGroup direct = metrics.addGroup("Direct");
        direct.<Long, Gauge<Long>>gauge("Count", new TaskExecutorMetricsInitializer.AttributeGauge<>(con, directObjectName, "Count", -1L));
        direct.<Long, Gauge<Long>>gauge("MemoryUsed", new TaskExecutorMetricsInitializer.AttributeGauge<>(con, directObjectName, "MemoryUsed", -1L));
        direct.<Long, Gauge<Long>>gauge("TotalCapacity", new TaskExecutorMetricsInitializer.AttributeGauge<>(con, directObjectName, "TotalCapacity", -1L));
    } catch (MalformedObjectNameException e) {
        LOG.warn("Could not create object name {}.", directBufferPoolName, e);
    }
    final String mappedBufferPoolName = "java.nio:type=BufferPool,name=mapped";
    try {
        final ObjectName mappedObjectName = new ObjectName(mappedBufferPoolName);
        MetricGroup mapped = metrics.addGroup("Mapped");
        mapped.<Long, Gauge<Long>>gauge("Count", new TaskExecutorMetricsInitializer.AttributeGauge<>(con, mappedObjectName, "Count", -1L));
        mapped.<Long, Gauge<Long>>gauge("MemoryUsed", new TaskExecutorMetricsInitializer.AttributeGauge<>(con, mappedObjectName, "MemoryUsed", -1L));
        mapped.<Long, Gauge<Long>>gauge("TotalCapacity", new TaskExecutorMetricsInitializer.AttributeGauge<>(con, mappedObjectName, "TotalCapacity", -1L));
    } catch (MalformedObjectNameException e) {
        LOG.warn("Could not create object name {}.", mappedBufferPoolName, e);
    }
}

Example 3 with MemoryMXBean

use of java.lang.management.MemoryMXBean in project midpoint by Evolveum.

the class WebComponentUtil method getRamUsage.

public static double getRamUsage() {
    int MB = 1024 * 1024;
    MemoryMXBean mBean = ManagementFactory.getMemoryMXBean();
    long usedHead = mBean.getHeapMemoryUsage().getUsed();
    long usedNonHeap = mBean.getNonHeapMemoryUsage().getUsed();
    return (usedHead + usedNonHeap) / MB;
}

Example 4 with MemoryMXBean

use of java.lang.management.MemoryMXBean 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 5 with MemoryMXBean

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

the class AdempiereMonitor method createLogMgtPage.

//	createSummaryPage
/**
	 * 	Add Log Management to page
	 *	@param bb body
	 */
private void createLogMgtPage(body bb) {
    bb.addElement(new hr());
    //	Ini Parameters
    table table = new table();
    table.setBorder(1);
    table.setCellSpacing(2);
    table.setCellPadding(2);
    //
    Properties ctx = new Properties();
    MSystem system = MSystem.get(ctx);
    tr line = new tr();
    line.addElement(new th().addElement(system.getDBAddress()));
    line.addElement(new td().addElement(Ini.getAdempiereHome()));
    table.addElement(line);
    //	OS + Name
    line = new tr();
    String info = System.getProperty("os.name") + " " + System.getProperty("os.version");
    String s = System.getProperty("sun.os.patch.level");
    if (s != null && s.length() > 0)
        info += " (" + s + ")";
    line.addElement(new th().addElement(info));
    info = system.getName();
    if (system.getCustomPrefix() != null)
        info += " (" + system.getCustomPrefix() + ")";
    line.addElement(new td().addElement(info));
    table.addElement(line);
    //	Java + email
    line = new tr();
    info = System.getProperty("java.vm.name") + " " + System.getProperty("java.vm.version");
    line.addElement(new th().addElement(info));
    line.addElement(new td().addElement(system.getUserName()));
    table.addElement(line);
    //	DB + Instance
    line = new tr();
    CConnection cc = CConnection.get();
    AdempiereDatabase db = cc.getDatabase();
    info = db.getDescription();
    line.addElement(new th().addElement(info));
    line.addElement(new td().addElement(cc.getConnectionURL()));
    //		line.addElement(new td().addElement(system.getDBInstance()));
    table.addElement(line);
    //	Processors/Support
    line = new tr();
    line.addElement(new th().addElement("Processor/Support"));
    line.addElement(new td().addElement(system.getNoProcessors() + "/" + system.getSupportUnits()));
    table.addElement(line);
    //	Memory
    line = new tr();
    MemoryMXBean memory = ManagementFactory.getMemoryMXBean();
    line.addElement(new th().addElement("VM Memory"));
    line.addElement(new td().addElement(new CMemoryUsage(memory.getNonHeapMemoryUsage()).toString()));
    table.addElement(line);
    line = new tr();
    line.addElement(new th().addElement("Heap Memory"));
    line.addElement(new td().addElement(new CMemoryUsage(memory.getHeapMemoryUsage()).toString()));
    table.addElement(line);
    //	Runtime
    line = new tr();
    RuntimeMXBean rt = ManagementFactory.getRuntimeMXBean();
    line.addElement(new th().addElement("Runtime " + rt.getName()));
    line.addElement(new td().addElement(TimeUtil.formatElapsed(rt.getUptime())));
    table.addElement(line);
    //	Threads
    line = new tr();
    ThreadMXBean th = ManagementFactory.getThreadMXBean();
    line.addElement(new th().addElement("Threads " + th.getThreadCount()));
    line.addElement(new td().addElement("Peak=" + th.getPeakThreadCount() + ", Demons=" + th.getDaemonThreadCount() + ", Total=" + th.getTotalStartedThreadCount()));
    table.addElement(line);
    //Transactions
    Trx[] trxs = Trx.getActiveTransactions();
    for (Trx trx : trxs) {
        if (trx != null && trx.isActive()) {
            line = new tr();
            line.addElement(new th().addElement("Active Transaction "));
            line.addElement(new td().addElement("Name=" + trx.getTrxName() + ", StartTime=" + trx.getStartTime()));
            table.addElement(line);
        }
    }
    //	Cache Reset
    line = new tr();
    line.addElement(new th().addElement(CacheMgt.get().toStringX()));
    line.addElement(new td().addElement(new a("adempiereMonitor?CacheReset=Yes", "Reset Cache")));
    table.addElement(line);
    //	Trace Level
    line = new tr();
    line.addElement(new th().addElement(new label("TraceLevel").addElement("Trace Log Level")));
    form myForm = new form("adempiereMonitor", form.METHOD_POST, form.ENC_DEFAULT);
    //	LogLevel Selection
    option[] options = new option[CLogMgt.LEVELS.length];
    for (int i = 0; i < options.length; i++) {
        options[i] = new option(CLogMgt.LEVELS[i].getName());
        options[i].addElement(CLogMgt.LEVELS[i].getName());
        if (CLogMgt.LEVELS[i] == CLogMgt.getLevel())
            options[i].setSelected(true);
    }
    select sel = new select("TraceLevel", options);
    myForm.addElement(sel);
    myForm.addElement(new input(input.TYPE_SUBMIT, "Set", "Set"));
    line.addElement(new td().addElement(myForm));
    table.addElement(line);
    //
    line = new tr();
    CLogFile fileHandler = CLogFile.get(true, null, false);
    line.addElement(new th().addElement("Trace File"));
    line.addElement(new td().addElement(new a("adempiereMonitor?Trace=" + fileHandler.getFileName(), "Current")));
    table.addElement(line);
    //
    line = new tr();
    line.addElement(new td().addElement(new a("adempiereMonitor?Trace=ROTATE", "Rotate Trace Log")));
    line.addElement(new td().addElement(new a("adempiereMonitor?Trace=DELETE", "Delete all Trace Logs")));
    table.addElement(line);
    //
    bb.addElement(table);
    //	List Log Files
    p p = new p();
    p.addElement(new b("All Log Files: "));
    //	All in dir
    File logDir = fileHandler.getLogDirectory();
    if (logDir != null && logDir.isDirectory()) {
        File[] logs = logDir.listFiles();
        for (int i = 0; i < logs.length; i++) {
            // Skip if is not a file - teo_sarca [ 1726066 ]
            if (!logs[i].isFile())
                continue;
            if (i != 0)
                p.addElement(" - ");
            String fileName = logs[i].getAbsolutePath();
            a link = new a("adempiereMonitor?Trace=" + fileName, fileName);
            p.addElement(link);
            int size = (int) (logs[i].length() / 1024);
            if (size < 1024)
                p.addElement(" (" + size + "k)");
            else
                p.addElement(" (" + size / 1024 + "M)");
        }
    }
    bb.addElement(p);
    //	Clients and Web Stores
    table = new table();
    table.setBorder(1);
    table.setCellSpacing(2);
    table.setCellPadding(2);
    //	
    line = new tr();
    MClient[] clients = MClient.getAll(ctx);
    line.addElement(new th().addElement("Client #" + clients.length + " - EMail Test:"));
    p = new p();
    for (int i = 0; i < clients.length; i++) {
        MClient client = clients[i];
        if (i > 0)
            p.addElement(" - ");
        p.addElement(new a("adempiereMonitor?EMail=" + client.getAD_Client_ID(), client.getName()));
    }
    if (clients.length == 0)
        p.addElement("&nbsp;");
    line.addElement(new td().addElement(p));
    table.addElement(line);
    //	
    line = new tr();
    MStore[] wstores = MStore.getActive();
    line.addElement(new th().addElement("Active Web Stores #" + wstores.length));
    p = new p();
    for (int i = 0; i < wstores.length; i++) {
        MStore store = wstores[i];
        if (i > 0)
            p.addElement(" - ");
        a a = new a(store.getWebContext(), store.getName());
        a.setTarget("t" + i);
        p.addElement(a);
    }
    if (wstores.length == 0)
        p.addElement("&nbsp;");
    line.addElement(new td().addElement(p));
    table.addElement(line);
    //
    bb.addElement(table);
}