Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Now I know this is like absolutely OS dependant but can someone tell me how to calculate the CPU usage percentage and the RAM usage percentage?

Windows XP home edtion with Service Pack 1. If I have to use a module, could you make sure it's installable by PPM?

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Re: monitoring CPU usage
by eibwen (Friar) on May 03, 2005 at 03:06 UTC

    A quick search for windows cpu returned Determine Windows Box %CPU use.

    In the interest in a comprehensive reponse, the two modules recommended were Win32::PerfLib and Win32::SystemInfo.

    UPDATE: While reviewing the POD for the above modules in the interest in creating sample code, I came across the following:




    • Windows NT 3.1 to 4.0: The percentage of approximately the last 1000 pages of physical memory that is in use.
    • Windows 2000: The approximate percentage of total physical memory that is in use.


    MemoryStatus return values in bytes by default. This can be changed with the $format parameter. Valid values for $format are:

           B        -  Bytes (default)
           KB       -  Kilobytes
           MB       -  Megabytes
           GB       -  Gigabytes