By Benchmark, the second one is faster than the first code. If think you could benchmark you code with both code to be sure.

use Time::HiRes qw(time);
use Benchmark qw(:all) ;

# Use Perl code in strings...
cmpthese(-10, {
        'Hires' => sub { my $t0 = [Time::HiRes::gettimeofday];
                         my $elapsed = Time::HiRes::tv_interval($t0)}
        ,
        'Time' => sub { my $t0 = time;
                         my $elapsed = time - $t0;
        },
    });

[download]
... result ... 
           Rate Hires  Time
Hires 100260/s    --  -58%
Time  240043/s  139%    --

[download]
Solli Moreira Honorio
Sao Paulo - Brazil

In reply to Re: Measuring time intervals using Time::HiRes -- time vs. gettimeofday and tv_interval by shonorio
in thread Measuring time intervals using Time::HiRes -- time vs. gettimeofday and tv_interval by hrr

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