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

Example 16 with OperatingSystemMXBean

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

the class Log method logSystemInfo.

public static void logSystemInfo() {
    try {
        OperatingSystemMXBean operatingSystemBean = ManagementFactory.getOperatingSystemMXBean();
        Log.info("Operating system" + " name: " + operatingSystemBean.getName() + " version: " + operatingSystemBean.getVersion() + " architecture: " + operatingSystemBean.getArch());
        RuntimeMXBean runtimeBean = ManagementFactory.getRuntimeMXBean();
        Log.info("Java runtime" + " name: " + runtimeBean.getVmName() + " vendor: " + runtimeBean.getVmVendor() + " version: " + runtimeBean.getVmVersion());
        MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
        Log.info("Memory limit" + " heap: " + memoryBean.getHeapMemoryUsage().getMax() / (1024 * 1024) + "mb" + " non-heap: " + memoryBean.getNonHeapMemoryUsage().getMax() / (1024 * 1024) + "mb");
        Log.info("Character encoding: " + System.getProperty("file.encoding") + " charset: " + Charset.defaultCharset());
    } catch (Exception error) {
        Log.warning("Failed to get system info");
    }
}

Example 17 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project h2database by h2database.

the class Utils method scaleForAvailableMemory.

/**
 * Scale the value with the available memory. If 1 GB of RAM is available,
 * the value is returned, if 2 GB are available, then twice the value, and
 * so on.
 *
 * @param value the value to scale
 * @return the scaled value
 */
public static int scaleForAvailableMemory(int value) {
    long maxMemory = Runtime.getRuntime().maxMemory();
    if (maxMemory != Long.MAX_VALUE) {
        // we are limited by an -XmX parameter
        return (int) (value * maxMemory / (1024 * 1024 * 1024));
    }
    try {
        OperatingSystemMXBean mxBean = ManagementFactory.getOperatingSystemMXBean();
        // this method is only available on the class
        // com.sun.management.OperatingSystemMXBean, which mxBean
        // is an instance of under the Oracle JDK, but it is not present on
        // Android and other JDK's
        Method method = Class.forName("com.sun.management.OperatingSystemMXBean").getMethod("getTotalPhysicalMemorySize");
        long physicalMemorySize = ((Number) method.invoke(mxBean)).longValue();
        return (int) (value * physicalMemorySize / (1024 * 1024 * 1024));
    } catch (Exception e) {
    // ignore
    }
    return value;
}

Example 18 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project mlib by myshzzx.

the class Oss method getOS.

/**
 * get os.
 */
public static OS getOS() {
    if (currOs != null)
        return currOs;
    OperatingSystemMXBean osBean = ManagementFactory.getOperatingSystemMXBean();
    String osName = osBean.getName().toLowerCase();
    if (osName.contains("windows"))
        currOs = OS.Windows;
    else if (osName.contains("linux"))
        currOs = OS.Linux;
    else if (osName.contains("mac"))
        currOs = OS.Mac;
    else if (osName.contains("unix"))
        currOs = OS.Unix;
    else
        currOs = OS.Unknown;
    return currOs;
}

Example 19 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project micrometer by micrometer-metrics.

the class FileDescriptorMetricsTest method fileDescriptorMetricsUnsupportedOsBeanMock.

@Test
void fileDescriptorMetricsUnsupportedOsBeanMock() {
    final OperatingSystemMXBean osBean = mock(UnsupportedOperatingSystemMXBean.class);
    new FileDescriptorMetrics(osBean, Tags.of("some", "tag")).bindTo(registry);
    assertThat(registry.find("process.files.open").gauge()).isNull();
    assertThat(registry.find("process.files.max").gauge()).isNull();
}

Example 20 with OperatingSystemMXBean

use of java.lang.management.OperatingSystemMXBean in project ma-core-public by infiniteautomation.

the class OperatingSystemInfoDefinition method getValue.

/* (non-Javadoc)
	 * @see com.serotonin.m2m2.module.ReadOnlySettingDefinition#getValue()
	 */
@Override
public OsInfo getValue() {
    OsInfo info = new OsInfo();
    OperatingSystemMXBean osBean = ManagementFactory.getOperatingSystemMXBean();
    if (osBean != null) {
        info.setArchitecture(osBean.getArch());
        info.setOperatingSystem(osBean.getName());
        info.setOsVersion(osBean.getVersion());
    }
    return info;
}