Re: c:\windows\prefetch ?
- From: "David" <nospam@xxxxxxxxxx>
- Date: Thu, 18 Jan 2007 08:13:19 -0500
http://blogs.msdn.com/ryanmy/archive/2005/05/25/421882.aspx
explains this. Also raises other questions to me but those are for a
programmers group. It would seem to me (based on running some tests and
seeing what is created in the prefetch folder) that the hash that is used is
only on the the full path information (including filename) but not on the
file itsself. This is probably for performance reasons... however if this is
true then the system is flawed bacause in cases such as mine where you
simply copy over a 'new' updated exe file overwriting an existing file in
same location then the hash will be the same and when you launch the new
program it will use that existing prefetch file and potentially use pages
from the old program. I am guessing that is what happened to me.
certianly don't take this as fact.... its just what I'm thinking. Also, I
assume MS programmers are much smarter than me so I can't imagine they would
not know this... so I'm probably wrong ;)
"David" <nospam@xxxxxxxxxx> wrote in message
news:%23u7u5tvOHHA.3552@xxxxxxxxxxxxxxxxxxxxxxx
xp pro sp2
anyone know the specifics about the c:\windows\prefetch?
I was using a program that is simply one .exe file (no install necessary,
no registry settings). I later got an updated version of this .exe file
and copied it over the older one I already had. Then I noticed that the
version number reported by going to help -> about within the program was
reporting the older version! really weird. Because of this I did a search
for all occurences of this .exe file on my system and saw that it came up
in this prefetch folder. In this folder there were a few occurences of
this exe only with some letters and a .pf (assuming for 'PreFetch')
appended to the name. This leads me to believe that this is a place for
caching programs in memory so that they can be launched quickly the next
time? but it my case its launching the wrong version of the program.
Anyone know any details of this behavior?
.
- References:
- c:\windows\prefetch ?
- From: David
- c:\windows\prefetch ?
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