Abstract: A computer program and apparatus that minimize the time required to update installed programs to a new version. Upon receipt of a request for updating old version software to a new version, a version information collector first obtains version information describing specified new version software. Then a processing time calculator calculates update processing times for a full update process, a partial update process, and a copy & update process, based on the obtained version information about the new version software, as well as based on version information describing the old version software. A process selector compares the calculated update processing times and selects the fastest update process. Then an updating unit executes the selected fastest update process to update the old version software to the new version software.

Abstract: A computer program and apparatus that minimize the time required to update installed programs to a new version. Upon receipt of a request for updating old version software to a new version, a version information collector first obtains version information describing specified new version software. Then a processing time calculator calculates update processing times for a full update process, a partial update process, and a copy & update process, based on the obtained version information about the new version software, as well as based on version information describing the old version software. A process selector compares the calculated update processing times and selects the fastest update process. Then an updating unit executes the selected fastest update process to update the old version software to the new version software.

Abstract: The present invention is implementing high efficiently traces of system calls for calling inner processing of an operation systems (OS) in an information processing device acting by an operating system. It comprises recording method recording traces of system calls in an information processing device, comprising a valid/invalid of the trace function being set plural system calls by each system call, and the traces are implemented by combination of the setting functions.