tcp traffic analysis linux command line mb per second
#!/usr/bin/perl
# traffic analysis script using tcpdump
use strict;
use warnings;
use Time::HiRes;
my $reporting_interval = 10.0; # seconds
my $bytes_this_interval = 0;
my $start_time = [Time::HiRes::gettimeofday()];
STDOUT->autoflush(1);
while (<>) {
if (/ length (\d+):/) {
$bytes_this_interval += $1;
my $elapsed_seconds = Time::HiRes::tv_interval($start_time);
if ($elapsed_seconds > $reporting_interval) {
my $bps = $bytes_this_interval / $elapsed_seconds;
printf "%02d:%02d:%02d %10.2f Bps\n", (localtime())[2,1,0],$bps;
$start_time = [Time::HiRes::gettimeofday()];
$bytes_this_interval = 0;
}
}
}