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{swapused}/$mem->{swaptotal})*100);
{swapcached}/$mem->{swaptotal})*100);
---
> my $swapused = 0;
> my $swapcached = 0;
> if($mem->{swaptotal}>0) {
> $swapused = sprintf("%.2f", ($mem->{swapused}/$mem->{swaptotal})*100);
> $swapcached = sprintf("%.2f", ($mem->{swapcached}/$mem->{swaptotal})*100);
> }
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=$mem_crit)||($swapused>=$swap_crit)) {
---
> if(($memused>=$mem_crit)||(($swapused>=$swap_crit) && ($swapused>0))) {
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=$mem_warn)||($swapused>=$swap_warn)) {
---
> elsif (($memused>=$mem_warn)||(($swapused>=$swap_warn) && ($swapused>0))) {


Sorry, I do not write English well.