Using Multiple Processors

Like Windows 2000, Windows XP supports multiprocessor computers. The use of multiple processors on one computer increases the computer’s ability to handle tasks and is particularly useful for Windows XP computers that function as network file and print servers. Simply put, the greater the processor speed and the more processors available to Windows XP, the faster it can work and meet the needs of local and network processes.

Essentially, Windows XP must be able to divide the workload between the processors into even pieces in order to utilize the processors. This process, which is called multitasking, enables the operating system to juggle processor requests between the two processors. Windows XP Professional is a true multitasking operating system that uses a type of multitasking called preemptive multitasking. Preemptive multitasking systems have the ability to manage and control applications and processor cycles. Because the Windows XP kernel remains in control of all resources, the operating system can halt applications or make them wait, or preempt them. With this kind of power and control, Windows XP can divide tasks between processors and determine what processor performs which task.

Note 

You may also be familiar with cooperative multitasking. Found in older versions of Windows, this feature simply enables applications to share the processor and wait on each other for processor cycles. The difference with preemptive multitasking is that Windows XP can manage the entire process and direct which task is handled by which processor. For this reason, Windows XP Professional is a true multitasking operating system.

Windows XP Professional can support two Intel-based processors. Windows XP does not support other processor types, such as Alpha or MIPS, so in order for multiprocessor functionality to work, two Intel-based processors must be used. If you install Windows XP Professional on a computer with two Intel-based processors, the processors should be detected and installed during Windows XP setup.




A+ Technician's on the Job Guide to Windows XP
A+ Technician's on the Job Guide to Windows XP
ISBN: 72226900
EAN: N/A
Year: 2003
Pages: 164

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