if ($counter % 100 == 0) {
Or even 
unless ($counter % 100) {

[download]
(But then it depends on how much one is familiar with such a construct - for me it is quite as intuitive as the former, but it's obvious that others' mileage may vary)

In reply to Re^3: Live operations-per-second counter by blazar
in thread Live operations-per-second counter by acidmax

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