There really isn't such a thing as "sucking 20% of CPU for a few seconds" The CPU is either crunching on your code with 100% of its might at this precise moment, or its not. The way you phrase it makes it sound like you'd like to gobble 20% of the CPU for a continuous block of seconds. Its the difference between "1 in 5 women are pregnant" and "this woman is 20% pregnant."

I'd recommend using a much finer granularity than sleep, perhaps Time::HiRes has what you are looking for, though I'm not sure if it works under Windows.

use Time::HiRes qw( usleep );
usleep ($microseconds);

[download]

-Blake

In reply to Re: gulpng CPU with precision by blakem
in thread gulpng CPU with precision by mandog

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