foreach (@DATA) {
   ($hostid, $time, $get, $post, $conn) = split(/\t/);
   push @{$munged_data{$hostid}},
      {time => $time,get => $get,post=>$post,conn=>$conn};
}

##</code><code>##

foreach my $server (@servers) {
   foreach(@{$munged_data{$server}}) {
     #do stuff with $_->{time} etc.
   }
}