Hello Anonymous Monk
sorry only sparse hints here: I see you use GD::Simple did you benchmarked your code using directly GD ? Just to be sure simple is not also slower.
You are processing a lot of data: you can use more cores to parse it. MCE offers you MCE::Map that sounds a good choice for your case. MCE::Examples shows code to chunk input data preserving the order. If you are able to rearrange one of the example I bet you get a big speed gain.
Show your progresses, please ;)
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.
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