Example usage for java.lang Runtime totalMemory

Introduction

In this page you can find the example usage for java.lang Runtime totalMemory.

Prototype

public native long totalMemory();

Source Link

Document

Returns the total amount of memory in the Java virtual machine.

Usage

From source file:com.kyne.webby.bukkit.RTKModuleSocket.java

private void getInfos(final Map<String, Object> responseParams) {
    final List<WebbyPlayer> playerList = new ArrayList<WebbyPlayer>();
    for (final Player player : Bukkit.getOnlinePlayers()) {
        playerList.add(new WebbyPlayer(player.getName(), player.isOp()));
    }/*from  w  ww .  java  2s .c om*/
    final Runtime runtime = Runtime.getRuntime();
    final long freeMemory = runtime.freeMemory();
    final long totalMemory = runtime.totalMemory();
    final long maxMemory = runtime.maxMemory();
    final int mb = 1024 * 1024;

    final ServerInfos serverInfos = new ServerInfos(Bukkit.getVersion(), Bukkit.getMaxPlayers(),
            playerList.size(), playerList, freeMemory / mb, totalMemory / mb, maxMemory / mb);
    responseParams.put("DATA", serverInfos);
}

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From source file:org.apache.shindig.social.opensocial.util.JsonConverterPerformancePerf.java

public void testToJsonLibOnInheritedClassOutput() throws Exception {
    SpecialPerson[] spa = new SpecialPerson[TEST_SIZE];
    for (int i = 0; i < TEST_SIZE; i++) {
        spa[i] = new SpecialPerson(String.valueOf(i), "robot", "nonsense");
    }/*from   w  w w  .  ja va 2s  .  c o m*/
    Runtime r = Runtime.getRuntime();
    r.gc();
    long memstart = r.totalMemory() - r.freeMemory();
    long startOutput = System.currentTimeMillis();
    String[] output = new String[TEST_SIZE];
    for (int i = 0; i < TEST_SIZE; i++) {
        output[i] = beanJsonLibConverter.convertToString(spa[i]);
    }
    long endOutput = System.currentTimeMillis();
    long memend = r.totalMemory() - r.freeMemory();

    String[] serializeOutput = new String[TEST_SIZE];
    char[] source = output[0].toCharArray();
    r.gc();

    long stringsizeStart = r.totalMemory() - r.freeMemory();
    for (int i = 0; i < TEST_SIZE; i++) {
        serializeOutput[i] = new String(source);
    }
    long stringsizeEnd = r.totalMemory() - r.freeMemory();

    /*
     * Output the time per conversion and the memory usage - the output per
     * conversion.
     *
     */

    log.info("SF JSON Lib Output " + average(startOutput, endOutput, TEST_SIZE) + " ms/conversion, "
            + (average(memstart, memend, TEST_SIZE) - average(stringsizeStart, stringsizeEnd, TEST_SIZE))
            + " heap bytes/conversion, output packet consumed on average "
            + average(stringsizeStart, stringsizeEnd, TEST_SIZE) + " for a string length of "
            + output[0].length());
    log.info("Output Was [" + output[0] + ']');
}

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From source file:alluxio.util.JvmPauseMonitor.java

private String getMemoryInfo() {
    Runtime runtime = Runtime.getRuntime();
    return "max memory = " + runtime.maxMemory() / (1024 * 1024) + "M total memory = "
            + runtime.totalMemory() / (1024 * 1024) + "M free memory = " + runtime.freeMemory() / (1024 * 1024)
            + "M";
}

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From source file:org.polymap.core.model2.test.SimpleModelTest.java

protected void logHeap() {
    System.gc();/*from  ww w . j av  a2  s. c  o  m*/
    Runtime rt = Runtime.getRuntime();
    log.info("HEAP: free/total: " + FileUtils.byteCountToDisplaySize(rt.freeMemory()) + " / "
            + FileUtils.byteCountToDisplaySize(rt.totalMemory()));
}

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From source file:org.loklak.api.susi.StatusService.java

@Override
public JSONObject serviceImpl(Query post, HttpServletResponse response, Authorization rights,
        JSONObjectWithDefault permissions) throws APIException {

    post.setResponse(response, "application/javascript");

    // generate json
    Runtime runtime = Runtime.getRuntime();
    JSONObject json = new JSONObject(true);
    JSONObject system = new JSONObject(true);
    system.put("assigned_memory", runtime.maxMemory());
    system.put("used_memory", runtime.totalMemory() - runtime.freeMemory());
    system.put("available_memory", runtime.maxMemory() - runtime.totalMemory() + runtime.freeMemory());
    system.put("cores", runtime.availableProcessors());
    system.put("threads", Thread.activeCount());
    system.put("runtime", System.currentTimeMillis() - Caretaker.startupTime);
    system.put("load_system_average", OS.getSystemLoadAverage());
    system.put("load_system_cpu", OS.getSystemCpuLoad());
    system.put("load_process_cpu", OS.getProcessCpuLoad());
    system.put("server_threads", SusiServer.getServerThreads());
    system.put("server_uri", SusiServer.getServerURI());

    JSONObject index = new JSONObject(true);
    JSONObject messages = new JSONObject(true);
    JSONObject queue = new JSONObject(true);
    messages.put("queue", queue);
    JSONObject users = new JSONObject(true);
    JSONObject queries = new JSONObject(true);
    JSONObject accounts = new JSONObject(true);
    JSONObject user = new JSONObject(true);
    index.put("messages", messages);
    index.put("users", users);
    index.put("queries", queries);
    index.put("accounts", accounts);
    index.put("user", user);

    JSONObject client_info = new JSONObject(true);
    client_info.put("RemoteHost", post.getClientHost());
    client_info.put("IsLocalhost", post.isLocalhostAccess() ? "true" : "false");

    JSONObject request_header = new JSONObject(true);
    Enumeration<String> he = post.getRequest().getHeaderNames();
    while (he.hasMoreElements()) {
        String h = he.nextElement();
        request_header.put(h, post.getRequest().getHeader(h));
    }/*w  w w. j  ava 2s  . c  o m*/
    client_info.put("request_header", request_header);

    json.put("system", system);
    json.put("index", index);
    json.put("client_info", client_info);

    return json;
}

---

From source file:qa.qcri.nadeef.test.core.SQLTableTest.java

public void testSize() throws InterruptedException {
    Stopwatch stopwatch = Stopwatch.createStarted();
    SQLTable table = new SQLTable("TB_test60m", connectionFactory);
    table.get(0);/*  w  ww .  j a  v a2  s. c o  m*/

    long elapsedTime = stopwatch.elapsed(TimeUnit.MILLISECONDS);
    int mb = 1024 * 1024;

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

    System.out.println("##### Heap utilization statistics [MB] #####");

    long usedMemory = (runtime.totalMemory() - runtime.freeMemory()) / mb;
    System.out.println("Used Memory:" + usedMemory);
    System.out.println("Free Memory:" + runtime.freeMemory() / mb);
    System.out.println("Total Memory:" + runtime.totalMemory() / mb);
    System.out.println("Max Memory:" + runtime.maxMemory() / mb);
    System.out.println("Load time: " + elapsedTime + " ms.");

    // memory usage should be less than 700 mb.
    Assert.assertTrue(usedMemory < 700);

    // load time should be less than 18000 ms
    Assert.assertTrue(elapsedTime < 18000);
}

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From source file:ai.susi.server.api.susi.StatusService.java

@Override
public JSONObject serviceImpl(Query post, HttpServletResponse response, Authorization rights,
        JsonObjectWithDefault permissions) throws APIException {

    post.setResponse(response, "application/javascript");

    // generate json
    Runtime runtime = Runtime.getRuntime();
    JSONObject json = new JSONObject(true);
    JSONObject system = new JSONObject(true);
    system.put("assigned_memory", runtime.maxMemory());
    system.put("used_memory", runtime.totalMemory() - runtime.freeMemory());
    system.put("available_memory", runtime.maxMemory() - runtime.totalMemory() + runtime.freeMemory());
    system.put("cores", runtime.availableProcessors());
    system.put("threads", Thread.activeCount());
    system.put("runtime", System.currentTimeMillis() - Caretaker.startupTime);
    system.put("load_system_average", OS.getSystemLoadAverage());
    system.put("load_system_cpu", OS.getSystemCpuLoad());
    system.put("load_process_cpu", OS.getProcessCpuLoad());
    system.put("server_threads", SusiServer.getServerThreads());
    system.put("server_uri", SusiServer.getServerURI());

    JSONObject index = new JSONObject(true);
    JSONObject messages = new JSONObject(true);
    JSONObject queue = new JSONObject(true);
    messages.put("queue", queue);
    JSONObject users = new JSONObject(true);
    JSONObject queries = new JSONObject(true);
    JSONObject accounts = new JSONObject(true);
    JSONObject user = new JSONObject(true);
    index.put("messages", messages);
    index.put("users", users);
    index.put("queries", queries);
    index.put("accounts", accounts);
    index.put("user", user);

    JSONObject client_info = new JSONObject(true);
    client_info.put("RemoteHost", post.getClientHost());
    client_info.put("IsLocalhost", post.isLocalhostAccess() ? "true" : "false");

    JSONObject request_header = new JSONObject(true);
    Enumeration<String> he = post.getRequest().getHeaderNames();
    while (he.hasMoreElements()) {
        String h = he.nextElement();
        request_header.put(h, post.getRequest().getHeader(h));
    }/*from   w  w  w.j  a  v  a  2 s  . c  o m*/
    client_info.put("request_header", request_header);

    json.put("system", system);
    json.put("index", index);
    json.put("client_info", client_info);

    return json;
}

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From source file:com.redhat.developers.containers.MyController.java

@CrossOrigin
@RequestMapping(method = RequestMethod.GET, value = "/memory", produces = "text/plain")
public String memory() {
    System.out.println("Starting to allocate memory...");
    Runtime rt = Runtime.getRuntime();
    StringBuilder sb = new StringBuilder();
    long maxMemory = rt.maxMemory();
    long usedMemory = 0;
    while (((float) usedMemory / maxMemory) < 0.80) {
        sb.append(System.nanoTime() + sb.toString());
        usedMemory = rt.totalMemory();
    }/* w w  w.  j  a  va 2s .  co m*/
    String msg = "Allocated more than 80% (" + humanReadableByteCount(usedMemory, false)
            + ") of the max allowed JVM memory size (" + humanReadableByteCount(maxMemory, false) + ")";
    System.out.println(msg);
    return msg;
}

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From source file:tachyon.master.InodeFolderTest.java

@Test
public void getChildTest() {
    // large number of small files
    InodeFolder inodeFolder = new InodeFolder("testFolder1", 1, 0, System.currentTimeMillis());
    int nFiles = (int) 1E5;
    Inode[] inodes = new Inode[nFiles];
    for (int i = 0; i < nFiles; i++) {
        inodes[i] = new InodeFile(String.format("testFile%d", i + 1), i + 2, 1, 1, System.currentTimeMillis());
        inodeFolder.addChild(inodes[i]);
    }/*from   w w w  . j a  va  2  s  .c o m*/

    Runtime runtime = Runtime.getRuntime();
    System.out.println(String.format("Used Memory = %dB when number of files = %d",
            runtime.totalMemory() - runtime.freeMemory(), nFiles));

    long start = System.currentTimeMillis();
    for (int i = 0; i < nFiles; i++) {
        Assert.assertEquals(inodes[i], inodeFolder.getChild(i + 2));
    }
    System.out.println(String.format("getChild(int fid) called sequentially %d times, cost %d ms", nFiles,
            System.currentTimeMillis() - start));

    start = System.currentTimeMillis();
    for (int i = 0; i < nFiles; i++) {
        Assert.assertEquals(inodes[i], inodeFolder.getChild(String.format("testFile%d", i + 1)));
    }
    System.out.println(String.format("getChild(String name) called sequentially %d times, cost %d ms", nFiles,
            System.currentTimeMillis() - start));
}

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From source file:com.openddal.test.BaseTestCase.java

/**
 * Get the number of bytes heap memory in use.
 *
 * @return the used bytes// www .  j  av  a 2  s. com
 */
public static long getMemoryUsedBytes() {
    Runtime rt = Runtime.getRuntime();
    long memory = Long.MAX_VALUE;
    for (int i = 0; i < 8; i++) {
        rt.gc();
        long memNow = rt.totalMemory() - rt.freeMemory();
        if (memNow >= memory) {
            break;
        }
        memory = memNow;
    }
    return memory;
}

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