Perflib_Perfdata_***.dat

B

Bill

My OS is Win XP Home w/SP2. I am amassing a set of files called
"Perflib_Perfdata_***" in the TEMP folder. The *** can be 2 or 3 numbers or
letters. I can delete all but one of these files which tells me it is in use
by another person or program, close all programs that might be using the
file and try again.

A Google search on these files found articles that said it was OK to delete
and not OK to delete. Seems it has something to do with monitoring programs
that run in XP. The term 'diskeeper' popped up several times too.
I was more confused after the search than before.

Should these files be deleted? - if so, how?
Should I delete the ones I can and leave the undeletable one?
(they seem to self re-produce)
Should I spend my time in a more constructive manner than messing with these
files?

TIA
Bill
 
P

PopS

Bill said:
My OS is Win XP Home w/SP2. I am amassing a set of
files called
"Perflib_Perfdata_***" in the TEMP folder. The ***
can be 2 or 3 numbers or
letters. I can delete all but one of these files
which tells me it is in use
by another person or program, close all programs that
might be using the
file and try again.

A Google search on these files found articles that
said it was OK to delete
and not OK to delete. Seems it has something to do
with monitoring programs
that run in XP. The term 'diskeeper' popped up
several times too.
I was more confused after the search than before.

Should these files be deleted? - if so, how?
Should I delete the ones I can and leave the
undeletable one?
(they seem to self re-produce)
Should I spend my time in a more constructive manner
than messing with these
files?

TIA
Bill
Click to expand...
Those are "prefetch" files or something like that, and
you can delete th eones that are old wihout any
problems. The ones in use are actually IN use, so you
can't delete those.

Normally they are deleted/created as needed, but
crashes, glitches, etc. can leave them scattered around
at times. Normally they're not a problem so unless
they take up a lot of space I don't worry about them.

HTH,

Pop
 
B

Bill

Thanks Pop,

I will delete the "deleteable", leave the rest, and move on down the road.
I have 74GB HD with 53GB free space - don't think space is a problem<G>

Bill






Those are "prefetch" files or something like that, and
you can delete th eones that are old wihout any
problems. The ones in use are actually IN use, so you
can't delete those.

Normally they are deleted/created as needed, but
crashes, glitches, etc. can leave them scattered around
at times. Normally they're not a problem so unless
they take up a lot of space I don't worry about them.

HTH,

Pop
 
W

Wesley Vogel

Normally Perflib_Perfdataxxx.dat files will get deleted by themselves. If
in use, you cannot delete them. Reboot and see if Perflib_Perfdataxxx.dat
files is still there.

Has nothing to do with Prefetch.

Here's more than you may want to know.

Perflib stands for Performance library. Perfdata stands for Performance
Data.

The %SystemRoot%\System32\Perflib_Perfdataxxx.dat files are created by the
System Monitor. And/or
%homedrive%\LocalSettings\Temp\Perflib_Perfdataxxx.dat.
or
C:\Documents and Settings\Your Name Here\Local
Settings\Temp\Perflib_Perfdataxxx.dat. When you shutdown normally, the file
should be deleted.

If you have an abormal shutdown, these files can become orphaned, and
accumulate on your computer.

Under some yet to be determined circumstances, these files can become
orphaned during normal operation.

The Windows Performance tool is composed of two parts: System Monitor and
Performance Logs and Alerts. With System Monitor, you can collect and view
real-time data about memory, disk, processor, network, and other activity in
graph, histogram, or report form.

To open Performance...
Start | Run | Type: perfmon.msc | OK

You can view this by opening the Task Manager. The Performance tab displays
a dynamic overview of your computer's performance, such as CPU and various
kinds of memory usage.

Also caused by:
Rundll32.exe advapi32.dll,ProcessIdleTasks
Event ID: 1000
Event Source: LoadPerf

Perflib_Perfdataxxx.dat Files Accumulate Under %SystemRoot%\System32
http://support.microsoft.com/default.aspx?scid=kb;en-us;285798

What are the %SystemRoot%\System32\Perflib_Perfdataxxx.dat files?
http://www.jsiinc.com/SUBG/TIP3300/rh3343.htm

-----

prflbmsg.dll = Perflib Event Messages

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
Logging Directory
Value Type: REG_SZ
C:\WINDOWS\system32\WBEM\Logs\

Repository Directory
Value Type: REG_EXPAND_SZ
%SystemRoot%\system32\WBEM\Repository

Working Directory
Value Type: REG_EXPAND_SZ
%SystemRoot%\system32\WBEM

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib
---

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion
Perflib

Description
The Perflib subkey stores configuration data for the Windows Performance
Library, which collects and organizes data for performance tools, such as
System Monitor.

In addition to entries, the Perflib subkey contains a Language-code subkey
for each spoken language you configure for Windows 2000. The Language-code
subkey stores performance counter names and their descriptions in the
specified language. The Language-code subkey is named for the language code
for that language. For example, the counters and descriptions for the
English language are stored in a subkey named 009, the language code for
English (United States).
---

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\
Application Sources
REG_MULTI_SZ
Perflib

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\
Application\Perflib
EventMessageFile
Value Type: REG_EXPAND_SZ
%SystemRoot%\System32\prflbmsg.dll

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\
Application Sources
REG_MULTI_SZ
Perflib

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\
Application\Perflib
EventMessageFile
Value Type: REG_EXPAND_SZ
%SystemRoot%\System32\prflbmsg.dll

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\
Application Sources
REG_MULTI_SZ
Perflib

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\
Application\Perflib
EventMessageFile
Value Type: REG_EXPAND_SZ
%SystemRoot%\System32\prflbmsg.dll

--
Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In
 
B

Bill

Thanks Wesley,

I'll have to print this out and study it awhile - lots of info

Bill



Normally Perflib_Perfdataxxx.dat files will get deleted by themselves. If
in use, you cannot delete them. Reboot and see if Perflib_Perfdataxxx.dat
files is still there.

Has nothing to do with Prefetch.

Here's more than you may want to know.

Perflib stands for Performance library. Perfdata stands for Performance
Data.

The %SystemRoot%\System32\Perflib_Perfdataxxx.dat files are created by the
System Monitor. And/or
%homedrive%\LocalSettings\Temp\Perflib_Perfdataxxx.dat.
or
C:\Documents and Settings\Your Name Here\Local
Settings\Temp\Perflib_Perfdataxxx.dat. When you shutdown normally, the file
should be deleted.

If you have an abormal shutdown, these files can become orphaned, and
accumulate on your computer.

Under some yet to be determined circumstances, these files can become
orphaned during normal operation.

The Windows Performance tool is composed of two parts: System Monitor and
Performance Logs and Alerts. With System Monitor, you can collect and view
real-time data about memory, disk, processor, network, and other activity in
graph, histogram, or report form.

To open Performance...
Start | Run | Type: perfmon.msc | OK

You can view this by opening the Task Manager. The Performance tab displays
a dynamic overview of your computer's performance, such as CPU and various
kinds of memory usage.

Also caused by:
Rundll32.exe advapi32.dll,ProcessIdleTasks
Event ID: 1000
Event Source: LoadPerf

Perflib_Perfdataxxx.dat Files Accumulate Under %SystemRoot%\System32
http://support.microsoft.com/default.aspx?scid=kb;en-us;285798

What are the %SystemRoot%\System32\Perflib_Perfdataxxx.dat files?
http://www.jsiinc.com/SUBG/TIP3300/rh3343.htm

-----

prflbmsg.dll = Perflib Event Messages

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WBEM\CIMOM
Logging Directory
Value Type: REG_SZ
C:\WINDOWS\system32\WBEM\Logs\

Repository Directory
Value Type: REG_EXPAND_SZ
%SystemRoot%\system32\WBEM\Repository

Working Directory
Value Type: REG_EXPAND_SZ
%SystemRoot%\system32\WBEM

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib
---

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion
Perflib

Description
The Perflib subkey stores configuration data for the Windows Performance
Library, which collects and organizes data for performance tools, such as
System Monitor.

In addition to entries, the Perflib subkey contains a Language-code subkey
for each spoken language you configure for Windows 2000. The Language-code
subkey stores performance counter names and their descriptions in the
specified language. The Language-code subkey is named for the language code
for that language. For example, the counters and descriptions for the
English language are stored in a subkey named 009, the language code for
English (United States).
---

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\
Application Sources
REG_MULTI_SZ
Perflib

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\
Application\Perflib
EventMessageFile
Value Type: REG_EXPAND_SZ
%SystemRoot%\System32\prflbmsg.dll

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\
Application Sources
REG_MULTI_SZ
Perflib

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\
Application\Perflib
EventMessageFile
Value Type: REG_EXPAND_SZ
%SystemRoot%\System32\prflbmsg.dll

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\
Application Sources
REG_MULTI_SZ
Perflib

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\
Application\Perflib
EventMessageFile
Value Type: REG_EXPAND_SZ
%SystemRoot%\System32\prflbmsg.dll

--
Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In
 
G

Guest

I am really curious to know if you are running the program "Nero 6 Ultra
Edition". The reason I ask is because I had the same identical problem. Every
time I would check my TEMP folder it would be full of all these types of
files. Each time I tried to get rid of them they could all be erased accept
for one, which could not be deleted.

I finally removed the program from the computer and am now running Roxio's
Easy Media Creator 7. Now I don't have the problem any more. I now know that
that particular program was the culpert in my particular case. However, I'm
not suggesting that is the only thing or program that causes this type of
problem, as there may be others too.

Redwagon....
 
B

Bill

Redwagon,

I am running Roxio's Easy Media Creator 7 - I have it on my other (Win XP
Pro) machine, but no collection of the silly files there. This machine has
Win XP Home.............................who knows, I may start a collection
of the critters and sell them to the highest bidder.

Bill


I am really curious to know if you are running the program "Nero 6 Ultra
Edition". The reason I ask is because I had the same identical problem.
Every
time I would check my TEMP folder it would be full of all these types of
files. Each time I tried to get rid of them they could all be erased accept
for one, which could not be deleted.

I finally removed the program from the computer and am now running Roxio's
Easy Media Creator 7. Now I don't have the problem any more. I now know that
that particular program was the culpert in my particular case. However, I'm
not suggesting that is the only thing or program that causes this type of
problem, as there may be others too.

Redwagon....
 

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