Prefetch file

  • Thread starter Thread starter Tracy
  • Start date Start date
T

Tracy

I for got where I read about this prefetch file, what
exactly is this file, its function in Windows XP, and
does deleting these files hurt the system in any way

Thanks
 
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I for got where I read about this prefetch file, what
exactly is this file, its function in Windows XP, and
does deleting these files hurt the system in any way

Thanks

"Boot Prefetching
Windows XP speeds up system boot by observing the code and data needed
each time the system is booted and prefetching the necessary file
contents early in the boot process. This prefetching is not done until
the third boot of the system, when sufficient information is available
to make the prefetching most effective. The files observed during system
boot will be used in the disk layout process mentioned above. Additional
information on the prefetcher and the Windows XP boot process can be
found at Fast Boot/Fast Resume for the Windows Platform."

"Application-Launch Prefetching
Windows XP also uses prefetching when launching applications. The files
and the contents of the files accessed by each new process are observed
and recorded. No prefetching can be done for the first launch of an
application, so first launches are often considerably slower than
subsequent launches. About 85% to 90% of the improvement is realized
after just one launch of an application, with the remaining speed
improvement coming after the system has had an opportunity to adjust the
disk layout with information specific to this application." -
http://www.microsoft.com/whdc/hwdev/platform/performance/benchmark.mspx

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