Optimizing Memory

Like other core components of the computer,such as the processor and the hard disk,memory also plays an important role in overall system performance.The physical memory is dynamically allocated to running system services and applications.Computer memory is mainly classi?ed into two types:
physical memory,which is the Random Access Memory (RAM),and the Virtual Memory,a combi- nation of the RAM and a fraction of hard disk space.Windows uses virtual memory when it runs out of available RAM installed in the system.It also transfers data in and out of RAM as,and when, required to make room for working programs.
For most applications and background system services,Windows Vista will automatically manage the available physical memory installed in the system.In addition to this,Vista will also take care of the virtual memory,which is used in case the physical memory is unable to handle all memory requirements of systems services and applications.The process of writing information to virtual memory is known as paging.The information is written to a paging ?le named page?le.sys. Windows automatically sets the initial size of the virtual memory equal to the amount of RAM plus 300MB.The maximum amount can be as large as three times the amount of RAM.For better performance,however,you should not set the maximum size to more than twice the amount of RAM.Doing this might cause hard disk fragmentation.In this section,we will learn how to ?ne- tune the virtual memory settings in order to boost the overall system performance.


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