Method Detail

• getPhysicalMemorySize

  public static long getPhysicalMemorySize()

  Obtains the total size in bytes of the installed physical memory on this machine. Note that on some VMs it's impossible to obtain the physical memory size, in this case the return value will -1.

  Returns:

  the total physical memory size in bytes or -1 if the size can't be obtained.

• getConfiguredMaxDirectMemory

  public static long getConfiguredMaxDirectMemory()

  Obtains the configured value of the -XX:MaxDirectMemorySize JVM option in bytes.

  Returns:

  the configured maximum direct memory size or -1 if no configuration provided.

• getMaxCacheMemorySize

  public static long getMaxCacheMemorySize()

  Calculates the total configured maximum size of all OrientDB caches.

  Returns:

  the total maximum size of all OrientDB caches.

• checkDirectMemoryConfiguration

  public static void checkDirectMemoryConfiguration()
                                             throws OConfigurationException

  Checks the direct memory configuration and emits a warning if configuration is invalid.

  Throws:

  OConfigurationException

• checkCacheMemoryConfiguration

  public static void checkCacheMemoryConfiguration()

  Checks the OrientDB cache memory configuration and emits a warning if configuration is invalid.

• parseVmArgsSize

  public static long parseVmArgsSize(String text)
                              throws IllegalArgumentException

  Parses the size specifier formatted in the JVM style, like 1024k or 4g. Following units are supported: k or K – kilobytes, m or M – megabytes, g or G – gigabytes. If no unit provided, it is bytes.

  Parameters:

  text - the text to parse.

  Returns:

  the parsed size value.

  Throws:

  IllegalArgumentException - if size specifier is not recognized as valid.