unless( defined($load) && $load < $wantload
&& defined($free) && $free > $wantfree
|| ( time() < $last + 1800 && $alerts > 2 ) )
{
warn localtime(). ": $machine has load of $load and $free kB free memory\n";
unless( defined($load) && $load < $wantload
&& defined($free) && $free > $wantfree
|| ( time() < $last + 1800 && $alerts > 2 ) )
{
warn localtime(). ": $machine has load of $load and $free kB free memory\n";