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

Example 66 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project activemq-artemis by apache.

the class DeadLetterAddressTest method testLargeMessageFileLeak.

@Test
public void testLargeMessageFileLeak() throws Exception {
    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    // only run this on *nix systems which will have the com.sun.management.UnixOperatingSystemMXBean (needed to check open file count)
    Assume.assumeTrue(os instanceof UnixOperatingSystemMXBean);
    long fdBaseline = ((UnixOperatingSystemMXBean) os).getOpenFileDescriptorCount();
    final int SIZE = 2 * 1024;
    SimpleString dla = new SimpleString("DLA");
    SimpleString qName = new SimpleString("q1");
    SimpleString adName = new SimpleString("ad1");
    AddressSettings addressSettings = new AddressSettings().setMaxDeliveryAttempts(1).setDeadLetterAddress(dla);
    server.getAddressSettingsRepository().addMatch(adName.toString(), addressSettings);
    SimpleString dlq = new SimpleString("DLQ1");
    clientSession.createQueue(dla, dlq, null, false);
    clientSession.createQueue(adName, qName, null, false);
    for (int i = 0; i < 10; i++) {
        ClientProducer producer = clientSession.createProducer(adName);
        ClientMessage clientFile = clientSession.createMessage(true);
        clientFile.setBodyInputStream(ActiveMQTestBase.createFakeLargeStream(SIZE));
        producer.send(clientFile);
        clientSession.start();
        ClientConsumer clientConsumer = clientSession.createConsumer(qName);
        ClientMessage m = clientConsumer.receive(500);
        m.acknowledge();
        Assert.assertNotNull(m);
        // force a cancel
        clientSession.rollback();
        m = clientConsumer.receiveImmediate();
        Assert.assertNull(m);
        clientConsumer.close();
    }
    assertTrue("File descriptors are leaking", ((UnixOperatingSystemMXBean) os).getOpenFileDescriptorCount() - fdBaseline <= 0);
}

Example 67 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project OpenOLAT by OpenOLAT.

the class RuntimeWebService method getSystemSummaryVO.

/**
 * Return the statistics about runtime: uptime, classes loaded, memory
 * summary, threads count...
 *
 * @response.representation.200.qname {http://www.example.com}runtimeVO
 * @response.representation.200.mediaType application/xml, application/json
 * @response.representation.200.doc The version of the instance
 * @response.representation.200.example {@link org.olat.restapi.system.vo.Examples#SAMPLE_RUNTIMEVO}
 * @response.representation.401.doc The roles of the authenticated user are not sufficient
 * @param request The HTTP request
 * @return The informations about runtime, uptime, classes loaded, memory summary...
 */
@GET
@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
public Response getSystemSummaryVO() {
    RuntimeStatisticsVO stats = new RuntimeStatisticsVO();
    stats.setMemory(getMemoryStatisticsVO());
    stats.setThreads(getThreadStatisticsVO());
    stats.setClasses(getClasseStatisticsVO());
    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    stats.setSystemLoadAverage(os.getSystemLoadAverage());
    stats.setStartTime(new Date(runtime.getStartTime()));
    stats.setUpTime(runtime.getUptime());
    return Response.ok(stats).build();
}

Example 68 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project OpenOLAT by OpenOLAT.

the class SystemWebService method getEnvironnementXml.

/**
 * Return some informations about the environment.
 * @response.representation.200.qname {http://www.example.com}environmentVO
 * @response.representation.200.mediaType application/xml, application/json
 * @response.representation.200.doc A short summary of the number of classes
 * @response.representation.200.example {@link org.olat.restapi.system.vo.Examples#SAMPLE_ENVVO}
 * @response.representation.401.doc The roles of the authenticated user are not sufficient
 * @param request The HTTP request
 * @return The informations about the environment
 */
@GET
@Path("environment")
@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
public Response getEnvironnementXml(@Context HttpServletRequest request) {
    if (!isAdminOrSystem(request)) {
        return null;
    }
    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    EnvironmentInformationsVO vo = new EnvironmentInformationsVO(os, runtime);
    return Response.ok(vo).build();
}

Example 69 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project ffx by mjschnie.

the class Resources method logResources.

public static void logResources() {
    if (logger.isLoggable(Level.INFO)) {
        StringBuilder sb = new StringBuilder();
        Runtime runtime = Runtime.getRuntime();
        runtime.runFinalization();
        runtime.gc();
        long MB = 1024 * 1024;
        OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
        if (os instanceof UnixOperatingSystemMXBean) {
            UnixOperatingSystemMXBean unixOS = (UnixOperatingSystemMXBean) os;
            // CPU Time and Average System Load.
            Long time = unixOS.getProcessCpuTime();
            sb.append(format("\n Total CPU time:         %6.2f (sec)", time * 1.0e-9));
            double systemLoadAve = unixOS.getSystemLoadAverage();
            if (systemLoadAve >= 0) {
                sb.append(format("\n System load average:    %6.2f", systemLoadAve));
            }
            // File handle use.
            long open = unixOS.getOpenFileDescriptorCount();
            long allowed = unixOS.getMaxFileDescriptorCount();
            sb.append(format("\n Open file handles:      %6d of %6d allowed", open, allowed));
            // System Memory.
            long freePhysical = unixOS.getFreePhysicalMemorySize() / MB;
            long totalPhysical = unixOS.getTotalPhysicalMemorySize() / MB;
            long freeSwap = unixOS.getFreeSwapSpaceSize() / MB;
            long totalSwap = unixOS.getTotalSwapSpaceSize() / MB;
            sb.append(format("\n System memory:          %6d MB free out of %6d MB", freePhysical, totalPhysical));
            sb.append(format("\n System swap space:      %6d MB free out of %6d MB", freeSwap, totalSwap));
        // Log CPU usage.
        // double sysCPULoad = unixOS.getSystemCpuLoad() * 100.0;
        // double procCPULoad = unixOS.getProcessCpuLoad() * 100.0;
        /**
         * if (procCPULoad >= 0) { sb.append(format("\n JVM CPU load:
         * %6.3f%%", procCPULoad)); } if (sysCPULoad >= 0) {
         * sb.append(format("\n System CPU load: %6.3f%%", sysCPULoad));
         * }
         */
        }
        // JVM Memory.
        sb.append(format("\n JVM memory:             %6d MB free out of %6d MB\n", runtime.freeMemory() / MB, runtime.totalMemory() / MB));
        logger.info(sb.toString());
    }
}

Example 70 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project syncope by apache.

the class SyncopeLogic method initSystemInfo.

private void initSystemInfo() {
    if (SYSTEM_INFO == null) {
        OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();
        RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
        SYSTEM_INFO = new SystemInfo();
        try {
            SYSTEM_INFO.setHostname(InetAddress.getLocalHost().getHostName());
        } catch (UnknownHostException e) {
            LOG.error("Could not get host name", e);
        }
        SYSTEM_INFO.setOs(operatingSystemMXBean.getName() + " " + operatingSystemMXBean.getVersion() + " " + operatingSystemMXBean.getArch());
        SYSTEM_INFO.setAvailableProcessors(operatingSystemMXBean.getAvailableProcessors());
        SYSTEM_INFO.setJvm(runtimeMXBean.getVmName() + " " + System.getProperty("java.version") + " " + runtimeMXBean.getVmVendor());
        SYSTEM_INFO.setStartTime(runtimeMXBean.getStartTime());
    }
}