butcher blog

MacBooKPro(2011) I7 2.2GHz

ゲストOSは　FreeBSD8.2 で２CPUメモリ　２GBに設定

SBCLを動かすと　B202よりも全然速い
4倍近く速い

sbcl
This is SBCL 1.0.49, an implementation of ANSI Common Lisp.
More information about SBCL is available at <http://www.sbcl.org/>.

SBCL is free software, provided as is, with absolutely no warranty.
It is mostly in the public domain; some portions are provided under
BSD-style licenses. See the CREDITS and COPYING files in the
distribution for more information.
* (defun tarai (x y z)
(if (<= x y)
y
(tarai (tarai (1- x) y z) (tarai (1- y) z x) (tarai (1- z) x y))))

TARAI
* (time (tarai 13 7 0))

Evaluation took:
1.143 seconds of real time
1.143055 seconds of total run time (1.142697 user, 0.000358 system)
100.00% CPU
2,508,722,798 processor cycles
0 bytes consed

13
* (time (tarai 14 8 0))

Evaluation took:
8.651 seconds of real time
8.648570 seconds of total run time (8.648526 user, 0.000044 system)
99.98% CPU
18,983,103,870 processor cycles
0 bytes consed

14

比較表　作りました。みれるかな？