I don't know if there is a general usage memory monitor

GTop, a binding to libgtop, is kind of the library version of the ps and top commands... (GTop::ProcMem and GTop::Mem for checking memory usage).

Advantage: less overhead than calling an external executable and parsing its output (though only relevant when being called many many times).

Disadvantage: not a core module.

In reply to Re^2: memory usage of modules by almut
in thread memory usage of modules by shmem

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