Based on test.pl 
use Win32::Process;
my $curentProcess;
my $pid = Win32::Process::GetCurrentProcessID();
if (Win32::Process::Open($curentProcess, $pid, 0)) {
   $p->SetPriorityClass(HIGH_PRIORITY_CLASS))
}

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In reply to Re: Changing Windows Process Priority by Anonymous Monk
in thread Changing Windows Process Priority by Anonymous Monk

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