benchmark - Fibonacci sequence

Benchmark - Fibonacci sequence

MacBook Pro, Core Duo 2, 2.8GHz
Mac OS-X 10.6.5

$ cat fib.rb
def fib(n)
  return n if n <= 1
  fib(n - 1) + fib(n - 2)
end
require "benchmark"
Benchmark.bm do |make|
  5.times do
    make.report { fib(38) }
  end
end
 
$ cat fib.py
from timeit import time
def fib(n):
  if n <= 1: return n
  return fib(n - 1) + fib(n - 2)
for i in range(5):
  t = time.time()
  fib(38)
  print(time.time()-t)

$ cat fib.php
<?php
function fib($n) {
  if ($n <= 1) return $n;
  return fib($n - 1) + fib($n - 2);
}
for($i=0; $i<5; $i++) {
  $t = time();
  fib(38);
  print(time()-$t)."\n";
}
?>

RESULTS (taken the fastest result)
  
MacRuby 0.7.1 (ruby 1.9.2) [universal-darwin10.0, x86_64]
  = 2.71 s.

Rubinius 1.1.1 (1.8.7 dc4b4bf0 2010-11-16 JI) [x86_64-apple-darwin10.5.0]
  = 3.39 s.

JRuby 1.5.6 (ruby 1.8.7 patchlevel 249) (2010-12-03 9cf97c3) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_22) [x86_64-java]
  = 3.91 s.  (with -J-Djruby.compile.fastest=true -J-D-jruby.compile.fastops=true --server -J-D-jruby.compile.positionless=true)
  = 7.65 s. 

JRuby 1.6.0.dev (ruby 1.8.7 patchlevel 249) (2010-12-09 1a0964f) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_22) [darwin-x86_64-java]
  = 5.28 (with --server)
  = 5.56

Ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.5.0]
  = 9.40 s.

Python 2.7.1 (r271:86832, Dec  3 2010, 20:18:48) [GCC 4.2.1 (Apple Inc. build 5664)] on darwin
  = 25.78 s.

PHP 5.3.3 (cli) (built: Oct 28 2010 10:24:50) Zend Engine v2.3.0
  = 27 s.

Python 3.1.3 (r313:86834, Dec  9 2010, 02:17:59) [GCC 4.2.1 (Apple Inc. build 5664)] on darwin
  = 30.37 s.

Ruby 1.8.7 (2010-04-19 patchlevel 253) [i686-darwin10.4.0], MBARI 0x6770, Ruby Enterprise Edition 2010.02
  = 57.38 s.

PyPy 1.4 PyPy 1.4 (Python 2.5.2) (79541, Nov 26 2010, 10:18:11)
  = 64.83 s.