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

Example 46 with MemoryPoolMXBean

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

the class StatusTransformer method writeVMState.

/**
 * Write the VM state.
 * @param writer The output writer
 * @param mode Mode <code>0</code> will generate HTML.
 *             Mode <code>1</code> will generate XML.
 * @param args I18n labels for the VM state values
 * @throws Exception Propagated JMX error
 */
public static void writeVMState(PrintWriter writer, int mode, Object[] args) throws Exception {
    SortedMap<String, MemoryPoolMXBean> memoryPoolMBeans = new TreeMap<>();
    for (MemoryPoolMXBean mbean : ManagementFactory.getMemoryPoolMXBeans()) {
        String sortKey = mbean.getType() + ":" + mbean.getName();
        memoryPoolMBeans.put(sortKey, mbean);
    }
    if (mode == 0) {
        writer.print("<h1>JVM</h1>");
        writer.print("<p>");
        writer.print(args[0]);
        writer.print(' ');
        writer.print(formatSize(Long.valueOf(Runtime.getRuntime().freeMemory()), true));
        writer.print(' ');
        writer.print(args[1]);
        writer.print(' ');
        writer.print(formatSize(Long.valueOf(Runtime.getRuntime().totalMemory()), true));
        writer.print(' ');
        writer.print(args[2]);
        writer.print(' ');
        writer.print(formatSize(Long.valueOf(Runtime.getRuntime().maxMemory()), true));
        writer.print("</p>");
        writer.write("<table border=\"0\"><thead><tr><th>" + args[3] + "</th><th>" + args[4] + "</th><th>" + args[5] + "</th><th>" + args[6] + "</th><th>" + args[7] + "</th><th>" + args[8] + "</th></tr></thead><tbody>");
        for (MemoryPoolMXBean memoryPoolMBean : memoryPoolMBeans.values()) {
            MemoryUsage usage = memoryPoolMBean.getUsage();
            writer.write("<tr><td>");
            writer.print(memoryPoolMBean.getName());
            writer.write("</td><td>");
            writer.print(memoryPoolMBean.getType());
            writer.write("</td><td>");
            writer.print(formatSize(Long.valueOf(usage.getInit()), true));
            writer.write("</td><td>");
            writer.print(formatSize(Long.valueOf(usage.getCommitted()), true));
            writer.write("</td><td>");
            writer.print(formatSize(Long.valueOf(usage.getMax()), true));
            writer.write("</td><td>");
            writer.print(formatSize(Long.valueOf(usage.getUsed()), true));
            if (usage.getMax() > 0) {
                writer.write(" (" + (usage.getUsed() * 100 / usage.getMax()) + "%)");
            }
            writer.write("</td></tr>");
        }
        writer.write("</tbody></table>");
    } else if (mode == 1) {
        writer.write("<jvm>");
        writer.write("<memory");
        writer.write(" free='" + Runtime.getRuntime().freeMemory() + "'");
        writer.write(" total='" + Runtime.getRuntime().totalMemory() + "'");
        writer.write(" max='" + Runtime.getRuntime().maxMemory() + "'/>");
        for (MemoryPoolMXBean memoryPoolMBean : memoryPoolMBeans.values()) {
            MemoryUsage usage = memoryPoolMBean.getUsage();
            writer.write("<memorypool");
            writer.write(" name='" + Escape.xml("", memoryPoolMBean.getName()) + "'");
            writer.write(" type='" + memoryPoolMBean.getType() + "'");
            writer.write(" usageInit='" + usage.getInit() + "'");
            writer.write(" usageCommitted='" + usage.getCommitted() + "'");
            writer.write(" usageMax='" + usage.getMax() + "'");
            writer.write(" usageUsed='" + usage.getUsed() + "'/>");
        }
        writer.write("</jvm>");
    }
}

Example 47 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project openolat by klemens.

the class MemoryWebService method createMemoryPools.

private MemoryPoolVO[] createMemoryPools() {
    List<MemoryPoolMXBean> memoryPool = ManagementFactory.getMemoryPoolMXBeans();
    MemoryPoolVO[] voes = new MemoryPoolVO[memoryPool.size()];
    int count = 0;
    for (MemoryPoolMXBean bean : memoryPool) {
        if (bean.isValid()) {
            voes[count++] = new MemoryPoolVO(bean);
        }
    }
    return voes;
}

Example 48 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project openolat by klemens.

the class MemoryRenderer method renderDetails.

private void renderDetails(StringOutput sb, long max, MemoryType type) {
    List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
    long totalUsed = 0l;
    List<MemoryPoolMXBean> typedPools = new ArrayList<>(4);
    for (MemoryPoolMXBean pool : pools) {
        if (pool.getType() == type) {
            typedPools.add(pool);
            totalUsed += pool.getUsage().getUsed();
        }
    }
    String tooltip;
    if (max == -1) {
        tooltip = toMB(totalUsed) + "MB";
    } else {
        tooltip = toMB(totalUsed) + "MB / " + toMB(max) + "MB";
        totalUsed = max;
    }
    sb.append(" title=\"").append(tooltip).append("\">");
    int count = 0;
    long totalUsedPercent = 0l;
    for (MemoryPoolMXBean pool : typedPools) {
        String name = pool.getName();
        long used = pool.getUsage().getUsed();
        long usedMB = toMB(used);
        long usedPercent = toPercent(used, totalUsed);
        totalUsedPercent += usedPercent;
        if (totalUsedPercent > 100l) {
            // never more than 100%
            usedPercent = usedPercent - (totalUsedPercent - 100l);
        }
        sb.append("<div class='progress-bar ").append(bars[count++]).append("' role='progressbar' ").append(" aria-valuenow='").append(usedMB).append("'").append(" aria-valuemin='0' style='width:").append(usedPercent).append("%;'><span").append(" title=\"").append(usedMB).append("MB (").append(name).append(")\"").append(">").append(usedMB).append("MB (").append(name).append(")</span></div>");
        if (count > bars.length) {
            count = 0;
        }
    }
}

Example 49 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project jvm-tools by aragozin.

the class YoungGCPauseBenchmark method benchmark.

public TestResult benchmark() throws IOException {
    STRING_TEMPLATE = new char[stringLen];
    if (mode == DataMode.CONST) {
        overrideRate = 1.1d;
    }
    System.out.println("Java: " + System.getProperty("java.version") + " VM: " + System.getProperty("java.vm.version"));
    System.out.println("Data model: " + Integer.getInteger("sun.arch.data.model"));
    long tenuredSize = Runtime.getRuntime().maxMemory();
    concurentMode = false;
    // getting more accurate data
    for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
        if (CONC_MODE.contains(bean.getName())) {
            concurentMode = true;
        }
        if (OLD_POOLS.contains(bean.getName())) {
            tenuredSize = bean.getUsage().getMax();
            if (tenuredSize < 0) {
                tenuredSize = bean.getUsage().getCommitted();
            }
            System.out.println("Exact old space size is " + (tenuredSize) + " bytes");
            oldMemPool = bean;
            break;
        }
    }
    beans: for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
        for (String pool : bean.getMemoryPoolNames()) {
            if (OLD_POOLS.contains(pool)) {
                oldGcMBean = (com.sun.management.GarbageCollectorMXBean) bean;
                continue beans;
            } else {
            }
        }
        youngGcMBean = bean;
    }
    boolean entrySizeAdjust = false;
    if (entrySize <= 0) {
        entrySizeAdjust = true;
        System.out.println("Estimating entry memory footprint ...");
        System.gc();
        long used = getOldSpaceUsed();
        int testSize = 100000;
        initMaps(testSize);
        while (size() < testSize) {
            populateMap(concurentMode, testSize);
        }
        System.gc();
        long footPrint = getOldSpaceUsed() - used;
        entrySize = align((int) (footPrint / testSize), 32);
        System.out.println("Entry footprint: " + entrySize);
        maps = null;
    }
    System.gc();
    long oldSpaceUsed = getOldSpaceUsed();
    long freeTenured = tenuredSize - getOldSpaceUsed();
    calculateCount(freeTenured);
    if (concurentMode) {
        System.out.println("Concurent mode is enabled");
        System.out.println("Available old space: " + (freeTenured >> 20) + "MiB");
    } else {
        System.out.println("Available old space: " + (freeTenured >> 20) + "MiB (-" + headRoom + " MiB)");
    }
    if (count < 0) {
        System.out.println("Heap size is too small, increase heap size or reduce headroom");
        return null;
    }
    System.out.println("Young space collector: " + youngGcMBean.getName());
    System.out.println("Old space collector: " + oldGcMBean.getName());
    System.out.println("Populating - " + count);
    initMaps(count);
    int n = 0;
    if (entrySizeAdjust) {
        int targetSize = 4 * count / 5;
        while (size() < targetSize) {
            populateMap(concurentMode, count);
            n++;
        }
        System.gc();
        System.gc();
        long footPrint = getOldSpaceUsed() - oldSpaceUsed;
        entrySize = align((int) (footPrint / size()), 32);
        System.out.println("Adjusted entry footprint: " + entrySize);
        calculateCount(freeTenured);
    }
    while (size() < count) {
        populateMap(concurentMode, count);
        n++;
    }
    if (concurentMode) {
        while (--n > 0) {
            processMap(false);
        }
    }
    // Let's wait for at least one major collection to complete
    if (!oldGcMBean.getName().startsWith("G1")) {
        // so we have to ignore this
        if (oldGcMBean != null) {
            long c = oldGcMBean.getCollectionCount();
            while (c == oldGcMBean.getCollectionCount()) {
                processMap(false);
            }
        }
    }
    System.out.println("Size: " + size());
    if (!dryMode) {
        System.out.println("Processing ... ");
    } else {
        System.out.println("Processing ... (DRY MODE ENABLED)");
    }
    StringBuffer sb = new StringBuffer();
    sb.append("Limits:");
    if (maxTime > 0) {
        sb.append(" ").append(maxTime + " sec");
    }
    if (maxOld > 0) {
        sb.append(" ").append(maxOld + " old collections");
    }
    if (maxYoung > 0) {
        sb.append(" ").append(maxYoung + " young collections");
    }
    System.out.println(sb.toString());
    activeOverrideRate = overrideRate;
    YoungGcTimeTracker tracker = new YoungGcTimeTracker();
    tracker.init();
    // start count down here
    long startTime = System.currentTimeMillis();
    long oldC = oldGcMBean.getCollectionCount();
    long youngC = youngGcMBean.getCollectionCount();
    while (true) {
        processMap(dryMode);
        tracker.probe();
        if (maxOld > 0) {
            if (oldGcMBean.getCollectionCount() - oldC > maxOld) {
                break;
            }
        }
        if (maxYoung > 0) {
            if (youngGcMBean.getCollectionCount() - youngC > maxYoung) {
                break;
            }
        }
        if (maxTime > 0 && (System.currentTimeMillis() > (startTime + TimeUnit.SECONDS.toMillis(maxTime)))) {
            break;
        }
    }
    System.out.println("Benchmark complete");
    return tracker.result();
}

Example 50 with MemoryPoolMXBean

use of java.lang.management.MemoryPoolMXBean in project Payara by payara.

the class MemoryReporter method getMemoryPoolReport.

private String getMemoryPoolReport() {
    final StringBuilderNewLineAppender sb = new StringBuilderNewLineAppender(new StringBuilder());
    final long millis = rmbean.getUptime();
    final String uptime = sm.getString("uptime", JVMInformationCollector.millis2HoursMinutesSeconds(millis));
    sb.append(uptime);
    for (final MemoryPoolMXBean m : pools) {
        final String n = m.getName();
        sb.append(sm.getString("memory.pool.name", n));
        MemoryUsage mu = m.getUsage();
        sb.append(mu2String(mu));
    }
    return (sb.toString());
}