A perl program can use more memory after running a while even if nothing is wrong. For example, if you load a 10MB file into a scalar, that scalar will hang onto that memory, even if it goes out of scope.
Shouldn't these situations be handled by garbage collection. If a scalar (or array/hash) gets out of scope (eg. subroutines internal variables) they should be freed when memory is needed before asking memory from system?
AFAIK memory asked from system won't shrink.
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