NORMAL_PRIORITY_CLASS is exactly that. Use the normal priority for this process. Alternatives to are IDLE_, HIGH_ and REALTIME_PRIORITY_CLASS constants. These are the same values as you can set using the "set priority" submenu from the Task Manager context menu. On XP/2003 there are also ABOVE_NORMAL_PRIORITY and BELOW_NORMAL_PRIORITY, but these constants are not (yet) exported by Win32::Process.

Simplistically, when a higher priority task becomes eligible to run, it will take precedence over lower priority processes. Be aware that changing these values to other than NORMAL is inadvisable unless you have good reasons, and the process is written to operate properly at the chosen level.

For the full nitty gritty, see the MSDN explanations.

According to this documentation, the CREATE_NO_WINDOW flag is ignored!

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Question on Win32::Process by BrowserUk
in thread Question on Win32::Process by kprasanna_79

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