Re: Tcl faster than Perl/Python...but only with tricks...


Stephan Kuhagen wrote:

But aside from that, I wondering, if while and gets (or one of them) have
such a big performance impact, and why. Remember, even if I remove the if,
regex and puts in the loop, it just gets twice as fast. I would expect,
that if, regex and puts together should use much more time than while and
gets.

A simple way of removing all the "first time" overheads (interpreter
init, bytecode compilation) would be to do the comparison on a file ten
times larger (just cat it over and over again).

But *if* [gets] is truly slower than it should (I'm not expecting
[while] to be the culprit !), then I'd look around the -translation
(the crlf) and -encoding (unicode conversion) aspects of the channel
(remember there's a mandatory unicode conversion for regexp; I don't
know if this could be a realistic cause for the slowdown though...).

-Alex

.

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