(Performance library, Performance Data) files are created by Windows System Monitor
and other performance or disk monitoring software programs such as Diskeeper, Motherboard Monitor, Nero INCD. If not familiar with System Monitor, you can learn more by referring to:
When you shutdown a computer normally, the Perflib_Perfdat_***.dat files should be deleted but if you have an abormal shutdown, they can become orphaned and accumulate on your computer. Under some circumstances it has even been reported that these files can become orphaned during normal operation.
Perflib_Perfdataxxx.dat Files Accumulate...
These files are generated by processes in the normal course of operation; however, files are orphaned when you do not shut down a computer properly, such as by pressing the power button on a computer...
Perflib_Perfdata_***.dat files may be found in various locations such as:
- C:\Documents and Settings\username\Local Settings\Temp\
Any program that installs a performance monitoring function can create these types of files. Since they are not malware related, Perflib_Perfdata_***.dat files can be ignored
. If you attempt to delete them, you may receive a notice that the files are "in use
". This is normal behavior for files which are protected by the OS and therefore, they cannot be deleted in the usual manner.
To stop these files from being created:
- Click on Start > Run and type: services.msc
- Press OK.
- Click the "Extended tab" at the bottom to view all the info on your services.
- Scroll down the list and find the Performance Logs and Alert service.
- When you find the service, double-click on it or right-click and choose "Properties".
- In the Properties Window > General Tab that opens, click the "Stop" button.
- From the drop-down menu next to "Startup Type", click on "Disabled".
- Click "Apply", then "OK" and close any open windows.