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Prefetch


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12 replies to this topic

#1 sempai

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Posted 31 August 2006 - 09:33 AM

hello,

i know that cleaning up prefetch help to boost a computers performance... i just want to ask what is the best thing to do, clean the prefetch folder or completely disable prefetch? tnx....

anyone?

semp

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#2 Albert Frankenstein

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Posted 31 August 2006 - 09:44 AM

If you are trying to improve performance, then don't disable prefetch. It's very purpose is to improve performance.
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#3 sempai

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Posted 31 August 2006 - 09:49 AM

first of all tnx for the fast reply.

what should i do, delete the contents of prefetch folder or change settings? (1,2 or 3?), my current setting is 3... or just do nothing?

Edited by sempai, 31 August 2006 - 09:52 AM.

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#4 tg1911

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Posted 31 August 2006 - 10:15 AM

Prefetch is a very useful technique in Windows XP.
However, after using XP some time, the prefetch folder can get full of rarely used, or obsolete links, which can slow down your computer noticeably.

Open C: / windows / prefetch
Delete all files (or at least those more than 3 weeks old), reboot.
It's recommended that you do this every month.

Deleting prefetch files too often (every reboot), can decrease system performance!
Once fresh, it will normally take 3 bootups before Windows collects enough information for the applications that you run.
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#5 sempai

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Posted 31 August 2006 - 10:18 AM

hi tg1911......

thanks for the wonderfull info... it really helps. :thumbsup:

semp

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#6 tg1911

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Posted 31 August 2006 - 10:42 AM

You're welcome, sempai.
Glad I could be of help.
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#7 Joshuacat

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Posted 31 August 2006 - 10:57 AM

Your other question...I would assume that you were talking about one of the registry settings for Prefetch?(1, 2, 3) Leave it at the default of 3, unless you really like to play around with your computer. I always found that there are negatives for any tweak that you try. As you can tell, I not much of a risk taker... :thumbsup:
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#8 Orange Blossom

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Posted 31 August 2006 - 02:32 PM

A prefetch file essentially tells the computer: here's all the files you need to open this program; thus, the computer doesn't have to hunt all over the disk to get its grocery list so to speak and it can deliver your program much faster.

Here is a quote with more information about prefetch files and what the numbers in the registry setting mean.
-----------------

# knightcrawler Says:

July 20th, 2005 at 1:35 pm

You can delete it if you made big changes otherwise the layout.ini will have a lot of old data.

1. Delete all the files in the folder

2. Turn on the Task Schedule service to automatic and start it if it isnít already.

3. Open a cmd window and type or paste this:

Rundll32.exe advapi32.dll,ProcessIdleTasks

4. The folder will be rebuilt with the current apps and drivers.

Also:

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Session Manager \ Memory Management \ PrefetchParameters

dword value = EnablePrefetcher

0 = Disable,
1 = App launch prefetch
2 = Boot Prefetch
3 = Both (recommended)

My recommendation for the prefetcher is based on the amount of RAM that you have:

128MB - Disabled (reg value 0)
256MB - Boot only (reg value 1) {EDIT I think he meant 2 here judging by the definitions above. Orange Blossom}
512MB or more - Both (reg value 3)

found on this page: http://www.edbott.com/weblog/archives/000743.html
---------------------
Incidentally, I have 256 RAM, and I have my prefetch set to 3.

Orange Blossom :thumbsup:

Edited by Orange Blossom, 31 August 2006 - 02:35 PM.

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#9 sempai

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Posted 31 August 2006 - 05:21 PM

hi orange and josh.... thank you so much.

semp

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#10 fleamailman

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Posted 31 August 2006 - 05:40 PM

I don't think touching the prefetch is going to make a difference but often the old entries pile up and can confuss the comp with silly start up problems, so once in a while I just:

press: winkey + r
type: perfetch
press: enter
press: ctrl + a
press: shift + delete
press: enter
everyday is a gift

#11 sempai

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Posted 01 September 2006 - 05:16 AM

thanks for the additional info.... :thumbsup:

~Semp

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#12 Enthusiast

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Posted 01 September 2006 - 01:54 PM

hello,

i know that cleaning up prefetch help to boost a computers performance... i just want to ask what is the best thing to do, clean the prefetch folder or completely disable prefetch? tnx....

anyone?

semp


Actually, cleaning prefetch files degrades your computer's performance.
Windows will clean them automatically when they reach 128 files.

Cleaning the Prefetch folder as beneficial is based in a Myth and doing so actually degrades performance. Windows by default cleans this folder at 128 entries.
Anyone who claims this should be cleaned for ANY reason does not understand Windows Prefetching, how Windows Prefetching works, and actually defeats XP's ability to function as fast as possible.)

#13 sempai

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Posted 02 September 2006 - 01:48 AM

thanks.... :thumbsup:

~Semp

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