My favorite tool for this is Benchmark::Timer. 

use Benchmark::Timer;

my $T = new Benchmark::Timer;

$T->start( 'Outer' );

for( 1 .. 1000 ) { 

    $T->start( 'Inner' ); 

    # Request a 50 millisec delay to simulate command
    select undef, undef, undef, 0.05; 

    $T->stop( 'Inner' ) 
}; 
$T->stop( 'Outer' );

$T->report;

1 trial of Outer (199.094s total)

1000 trials of Inner (62.500s total), 62.500ms/trial

[download]
Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
Timing (and a little luck) are everything!

In reply to Re: Timing a process by BrowserUk
in thread Timing a process by ukndoit

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