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Loading the standard library takes time. With a smaller (underimplemented) standard library, you can get to the user's code much more quickly.



Perl 5 had an in-memory footprint of about 768k. VisualWorks Smalltalk had a standard one of 12MB, yet loaded and started it faster than Perl did with 768k. If just your standard library takes very long at all to load, something needs attention.


Yeah, a lot of language runtimes seem to not have discovered mmap.




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