On Nov 19, 2010 21:20:01, Yoann Padioleau wrote: > On Nov 19, 2010, at 11:46 AM, Dario Teixeira wrote: ... > > Actually, Facebook has a compiler that transforms PHP source code into > > C++ [1], and they claim a 50% reduction in CPU usage. > > Yes, which is good. But if you think about it is "only" a x2 speedup vs a > really slow bytecode interpreter (the Zend PHP interpreter). PHP is known > for being more than 30 times slower than C. > It's even slower than Ruby on > http://shootout.alioth.debian.org/u32/which-programming-languages-are-fast > est.php There are lots of opportunities to do better IMHO.
Would it be completely inconceivable for a company like facebook to reimplement everything using a fast well designed typed language instead of "spending hundreds of millions of dollars on machines that run PHP bytecode interpreters"? (quoting Yoann) Vincent [not completely joking] _______________________________________________ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
