While most computers will not need to get into a BLG - Windows Binary Performance Log File very often, this particular file type contains some very useful information. Files of this nature are created by Windows for performance tracking purposes. The files contain information noting how much CPU is being used and memory and disk resources required by any given program. Using this information, a person can assess which program should be uninstalled or used less often in order to maximize computer resources. BLG files can be viewed either via Windows Administrative Tools or by converting the files into .CSV files.