Hi,
I use Time::Hires module to get the latency of ping. 

use Net::Ping;
use Time::HiRes qw( usleep gettimeofday tv_interval );
...
        $p = Net::Ping->new("icmp");
        for ( $r=0; $r<2; $r++){
                $t0 = [gettimeofday];   
                $IsReachble = $p->ping($host,2);
                $t1 = [gettimeofday];
                last if $IsReachble;
        }
        my $delay_ms = sprintf ("%dms",1000* tv_interval ($t0, $t1));
        $p->close();
...

Hope this helps.

Regards
Mark Zvolanek
+612 9227 0479

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