Example usage for java.lang.management MemoryUsage getUsed

Introduction

In this page you can find the example usage for java.lang.management MemoryUsage getUsed.

Prototype

public long getUsed() 

Source Link

Document

Returns the amount of used memory in bytes.

Usage

From source file:MainClass.java

public static void premain(final Instrumentation inst) {
    Runtime.getRuntime().addShutdownHook(new Thread() {
        public void run() {
            try {
                PrintWriter out = new PrintWriter(System.err);

                ThreadMXBean tb = ManagementFactory.getThreadMXBean();
                out.printf("Current thread count: %d%n", tb.getThreadCount());
                out.printf("Peak thread count: %d%n", tb.getPeakThreadCount());

                List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
                for (MemoryPoolMXBean pool : pools) {
                    MemoryUsage peak = pool.getPeakUsage();
                    out.printf("Peak %s memory used: %,d%n", pool.getName(), peak.getUsed());
                    out.printf("Peak %s memory reserved: %,d%n", pool.getName(), peak.getCommitted());
                }//from  ww  w  .  j  a va  2s .  c  om

                Class[] loaded = inst.getAllLoadedClasses();
                out.println("Loaded classes:");
                for (Class c : loaded)
                    out.println(c.getName());
                out.close();
            } catch (Throwable t) {
                System.err.println("Exception in agent: " + t);
            }
        }
    });
}

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From source file:org.commoncrawl.util.JVMStats.java

public static float getHeapUtilizationRatio() {
    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    MemoryUsage memHeap = memoryMXBean.getHeapMemoryUsage();

    return ((float) memHeap.getUsed()) / ((float) memHeap.getMax());
}

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From source file:gridool.util.system.SystemUtils.java

public static long getHeapUsedMemory() {
    MemoryUsage usage = mbean.getHeapMemoryUsage();
    final long used = usage.getUsed();
    return used;/*  w  w w .jav  a 2 s .  c o m*/
}

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From source file:com.android.tools.idea.diagnostics.crash.GoogleCrash.java

@NotNull
private static Map<String, String> getDefaultParameters() {
    Map<String, String> map = new HashMap<>();
    ApplicationInfo applicationInfo = getApplicationInfo();

    if (ANONYMIZED_UID != null) {
        map.put("guid", ANONYMIZED_UID);
    }/* www . j a  va2s .  c  o  m*/
    RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
    map.put("ptime", Long.toString(runtimeMXBean.getUptime()));

    // product specific key value pairs
    map.put(KEY_VERSION, applicationInfo == null ? "0.0.0.0" : applicationInfo.getStrictVersion());
    map.put(KEY_PRODUCT_ID, CrashReport.PRODUCT_ANDROID_STUDIO); // must match registration with Crash
    map.put("fullVersion", applicationInfo == null ? "0.0.0.0" : applicationInfo.getFullVersion());

    map.put("osName", StringUtil.notNullize(SystemInfo.OS_NAME));
    map.put("osVersion", StringUtil.notNullize(SystemInfo.OS_VERSION));
    map.put("osArch", StringUtil.notNullize(SystemInfo.OS_ARCH));
    map.put("locale", StringUtil.notNullize(LOCALE));

    map.put("vmName", StringUtil.notNullize(runtimeMXBean.getVmName()));
    map.put("vmVendor", StringUtil.notNullize(runtimeMXBean.getVmVendor()));
    map.put("vmVersion", StringUtil.notNullize(runtimeMXBean.getVmVersion()));

    MemoryUsage usage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
    map.put("heapUsed", Long.toString(usage.getUsed()));
    map.put("heapCommitted", Long.toString(usage.getCommitted()));
    map.put("heapMax", Long.toString(usage.getMax()));

    return map;
}

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From source file:gridool.util.system.SystemUtils.java

public static long getHeapFreeMemory() {
    MemoryUsage usage = mbean.getHeapMemoryUsage();
    final long max = usage.getMax();
    final long used = usage.getUsed();
    final long free = max - used;
    return free;/*w  ww  .j a va2  s . c o m*/
}

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From source file:gridool.util.system.SystemUtils.java

public static float getHeapFreeRatio() {
    MemoryUsage usage = mbean.getHeapMemoryUsage();
    final long max = usage.getMax();
    final long used = usage.getUsed();
    final long free = max - used;
    return (float) free / (float) max;
}

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From source file:org.commoncrawl.util.JVMStats.java

public static void dumpMemoryStats() {

    MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
    MemoryUsage memHeap = memoryMXBean.getHeapMemoryUsage();

    List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();

    long gcTime = 0;
    for (GarbageCollectorMXBean gcBean : gcBeans) {
        gcTime += gcBean.getCollectionTime();
    }/*from ww w .  ja  va  2s  .  co m*/

    float utilizationRatio = ((float) memHeap.getUsed()) / ((float) memHeap.getMax());

    LOG.info("Heap Size:" + memHeap.getUsed() / MBytes + " (MB) CommitSize:" + memHeap.getCommitted() / MBytes
            + " (MB) Max:" + memHeap.getMax() + " Ratio:" + utilizationRatio + " GCTime:"
            + (gcTime - lastGCTime) + "PendingFinalCnt:" + memoryMXBean.getObjectPendingFinalizationCount());

    lastGCTime = gcTime;
}

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From source file:jef.testbase.JefTester.java

private static void printMem(MemoryUsage m) {
    System.out.println("??:" + StringUtils.formatSize(m.getMax()));
    System.out.println("?:" + StringUtils.formatSize(m.getCommitted()));
    System.out.println("?:" + StringUtils.formatSize(m.getInit()));
    System.out.println(":" + StringUtils.formatSize(m.getUsed()));
}

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From source file:org.soitoolkit.commons.mule.util.MiscUtil.java

private static void printMemUsage() {
    int mb = 1024 * 1024;

    MemoryMXBean mxb = ManagementFactory.getMemoryMXBean();
    MemoryUsage hm = mxb.getHeapMemoryUsage();
    MemoryUsage nhm = mxb.getNonHeapMemoryUsage();
    //      int finalizable = mxb.getObjectPendingFinalizationCount();

    logger.trace("Heap Memory:  init/used/committed/max=" + hm.getInit() / mb + "/" + hm.getUsed() / mb + "/"
            + hm.getCommitted() / mb + "/" + hm.getMax() / mb);
    logger.trace("Non-Heap Mem: init/used/committed/max=" + nhm.getInit() / mb + "/" + nhm.getUsed() / mb + "/"
            + nhm.getCommitted() / mb + "/" + nhm.getMax() / mb);
    //                 logger.trace("finalizable: " + finalizable);

    //Getting the runtime reference from system
    Runtime runtime = Runtime.getRuntime();

    logger.trace("Used/Free/Total/Max:"
            //Print used memory
            + (runtime.totalMemory() - runtime.freeMemory()) / mb + "/"

            //Print free memory
            + runtime.freeMemory() / mb + "/"

            //Print total available memory
            + runtime.totalMemory() / mb + "/"

            //Print Maximum available memory
            + runtime.maxMemory() / mb);
}

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From source file:io.ecarf.core.utils.Utils.java

/**
 * Log memory usage/*ww w.  ja v a  2 s. com*/
 * @return
 */
public static long getMemoryUsage() {
    List<MemoryPoolMXBean> memoryPools = new ArrayList<MemoryPoolMXBean>(
            ManagementFactory.getMemoryPoolMXBeans());
    long usedHeapMemoryAfterLastGC = 0;
    for (MemoryPoolMXBean memoryPool : memoryPools) {
        if (memoryPool.getType().equals(MemoryType.HEAP)) {
            MemoryUsage poolCollectionMemoryUsage = memoryPool.getCollectionUsage();
            usedHeapMemoryAfterLastGC += poolCollectionMemoryUsage.getUsed();
        }
    }
    return usedHeapMemoryAfterLastGC;
}

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