Released on = July 22, 2006, 7:46 am

Press Release Author = Handy Software Lab

Industry = Software

Press Release Summary = Faster XP/2003/Vista Boot and Application Launch with
Prefetch Manager!

Press Release Body = Windows XP has a Prefetcher component, which shortens the
amount of time it
takes to start Windows and programs. When trouble shooting either Windows
or program start-up issues, it might be helpful to disable the prefetcher using
HSLAB Prefetch Manager, because it runs as a background service while other
applications are running or loading.
When a Windows XP system is booted, data is saved about all logical disk read
operations. On later boots, this information is used to prefetch these files in
parallel with other boot operations. During boot and application launch, a Windows
system demands and pages a sizable amount of data in small chunks (4 KB to 64 KB),
seeking between files, directories, and metadata. The Logical Prefetcher, which is
new for Windows XP, brings much of this data into the system cache with efficient
asynchronous disk I/Os that minimize seeks. During boot, the Logical Prefetcher
finishes most of the disk I/Os that need to be done for starting the system in
parallel to device initialization delays, providing faster boot and logon
performance.
Logical prefetching is accomplished by tracing frequently accessed pages in
supported scenarios and efficiently bringing them into memory when the scenario is
launched again. When a supported scenario is started, the transition page faults
from mapped files are traced, recording which page of a file is accessed. When the
scenario has completed (either the machine has booted or the application started),
the trace is picked up by a user-mode maintenance service, the Task Scheduler. The
information in the trace is used to update or create a prefetch-instructions file
that specifies which pages from which files should be prefetched at the next launch.



Web Site = http://www.hs-lab.com/products/sp/

Contact Details = Address: UA, Kiev
Ukraine

Phone Number:
Email: submit@hs-lab.com