From: Dmitry Nikiforov <dniq@...>
Date: 2012-02-03T07:20:01+09:00
Subject: Basic Ruby performance

Hello all!

First, I should point out that I'm new to Ruby, although it seems pretty
similar in some regards to JavaScript and Perl.

Anyway, I'm not sure if it's normal, or if it's specifics of Ruby on Mac
OS X, or if I haven't compiled it properly (although I used rvm to
install on my OS X Lion, to have the latest version - Lion comes with
1.8.7 by default, I believe, so I installed 1.9.3), but most things I
try to replicate with it that I used Perl to do before run about twice
slower. So I ran some basic benchmarks. Here's one example:

Ruby:

for a in 0..1E8
        a*2
end

Perl:

for $a ( 0..1E8 ) {
        a*2
}

Ruby takes 22 seconds, Perl - 9 seconds to execute this. This is very
similar to all other scenarios I tried (one of which is splitting
millions of comma separated rows into arrays).

I would really appreciate any useful suggestions: I would LOVE to be
able to use Ruby for most of the stuff I do (it's not that I don't like
Perl, but I love Ruby's syntax :) )

Thanks!

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