Warnings about Accurate CPU Time Collection
Cause and Possible Solution
Accurate CPU time detection was disabled. Another collection in this mode is already running on the system.
Another collection with accurate CPU time detection is running on the system or was not terminated properly.
Make sure the other collection has finished and try again. Only one
VTunecollection can run with accurate CPU time detection on the system at a time.
Accurate CPU time detection was disabled. The NT Kernel Logger is already in use.
VTunerequires the Microsoft* NT Kernel Logger to capture precise CPU time data. The NT Kernel Logger is a system-wide resource which cannot be shared by different processes. Other tools, such as the Xperf utility of the Windows* Performance Tools Kit may use the NT Kernel Logger at the same time.
Make sure that other tools do not use the NT Kernel Logger and try again.
Accurate CPU time detection was disabled. Drive <drive name> has not enough disk space.
The temporary folder for storing accurate CPU time data is located on a drive with insufficient free space.
Make sure you have enough space on the drive. The free space must be not less than specified in the
Limit collected data by: Result size from collection startoption on the
WHATpane of the
Highly accurate CPU time collection is disabled for this analysis. To enable this feature, run the product with the administrative privileges.
VTunerequires administrative privileges to enable accurate CPU time detection.
Make sure you are running the collection as a local administrator.
Accurate CPU time detection was disabled. The temporary data path <full path to file> is longer than 1024 symbols.
VTuneuses temporary files to collect precise CPU time data. The length of the path to the temporary files cannot be longer than 1024 symbols.
Make sure the TEMP environment variable for the path to the temporary files is no longer than 1024 symbols.
Accurate CPU time detection was disabled. This mode is not supported on this OS.
Some operating systems may not support accurate CPU time detection. For the list of supported operating systems, please see the
System Requirementssection of the product