I have a Perl Tk application that writes a number of spreadsheets and can also start another highly
interactive application. I would like the spreadsheet writing to work in the background so that the
interactive process has as much processor time as it can.
I start the interactive process with the commands
    $ppc = Win32::Process::Create(
        $process,
        $command_a,
        $command_b,
        0,
        HIGH_PRIORITY_CLASS,
        '.'
    );

[download]
which are used when a button is pressed.
Also in the excel writing section I have added a number of $mw->update commands ($mw is the name of the top level widget).
This basically works but I would like it to work better.
Therefore the questions are:
1. Am I doing the correct things with PRIORITY setting and ->update()
2. What can I do to allow the interactive process to get more of the processor time;
3. How can make using the processing starting button to react more quickly than it does at the moment;
4. What other steps can I take to achieve my goals?

In reply to Getting more of the processor time by merrymonk

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