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Re^4: Perl speed VS. other languages

by Aristotle (Chancellor)
on Jan 17, 2002 at 19:50 UTC ( #139525=note: print w/replies, xml ) Need Help??


in reply to Re: (tilly) 3: Perl speed VS. other languages
in thread Perl speed VS. other languages

Well it is a known factoid: Perl compiles to high-level bytecode, ie many builtins compile to a single opcode, whereas Java bytecode mimics a real CPU, so you are essentialy pitting a P-code interpreter against a hardware emulator. The P-code is almost bound to win.

The well known strategy of optimizing Perl programs by tuning them to spend a maximum amount of time running builtins (see Schwartzian Transform f.ex) highlights this issue clearly. Java optimization is very different and much closer resembles traditional optimization.

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