org.apache.hadoop.util
Class LinuxMemoryCalculatorPlugin

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.hadoop.util.MemoryCalculatorPlugin
          org.apache.hadoop.util.LinuxMemoryCalculatorPlugin

All Implemented Interfaces:

Configurable

public class LinuxMemoryCalculatorPlugin
extends MemoryCalculatorPlugin

Plugin to calculate virtual and physical memories on Linux systems.

Constructor Summary

LinuxMemoryCalculatorPlugin()

Method Summary

long	getPhysicalMemorySize() Obtain the total size of the physical memory present in the system.
long	getVirtualMemorySize() Obtain the total size of the virtual memory present in the system.
static void	main(java.lang.String[] args) Test the LinuxMemoryCalculatorPlugin

Methods inherited from class org.apache.hadoop.util.MemoryCalculatorPlugin

getMemoryCalculatorPlugin

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LinuxMemoryCalculatorPlugin

public LinuxMemoryCalculatorPlugin()

Method Detail

getPhysicalMemorySize

public long getPhysicalMemorySize()

Obtain the total size of the physical memory present in the system.

Specified by:

getPhysicalMemorySize in class MemoryCalculatorPlugin

Returns:

physical memory size bytes.

getVirtualMemorySize

public long getVirtualMemorySize()

Obtain the total size of the virtual memory present in the system.

Specified by:

getVirtualMemorySize in class MemoryCalculatorPlugin

Returns:

virtual memory size in bytes.

main

public static void main(java.lang.String[] args)

Test the LinuxMemoryCalculatorPlugin

Parameters:

args -