Oh, so in each thread, you read a large chunk from the file and then process it line by line in memory! This might work if you're sure your pattern can't be split between two chunks.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^3: Multi threading a.. huge file -- MCE::Grep by choroba
in thread Multi threading a by dnamonk

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