From: Robert Klemme <shortcutter@...>
Date: 2009-02-28T00:17:38+09:00
Subject: Re: Array performance question

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2009/2/27 Robert Klemme <shortcutter@googlemail.com>:
> Strange that the rehearsal has this dramatic effect. =A0Normally it
> should simply execute the block twice to warm up the system.

Here's a better test

16:16:32 Temp$ ruby bm.rb; ruby19 bm.rb
1.8.7
                                    user     system      total        real
size =3D 10000 10000              0.110000   0.000000   0.110000 (  0.11800=
0)
size =3D 100000 100000            0.781000   0.000000   0.781000 (  0.76900=
0)
size =3D 1000000 1000000         25.172000   0.000000  25.172000 ( 25.18500=
0)
size =3D 10000 10000              0.328000   0.000000   0.328000 (  0.32900=
0)
size =3D 100000 100000            0.547000   0.000000   0.547000 (  0.54200=
0)
size =3D 1000000 1000000         18.156000   0.000000  18.156000 ( 18.15100=
0)
1.9.1
                                    user     system      total        real
size =3D 10000 10000              0.031000   0.000000   0.031000 (  0.02700=
0)
size =3D 100000 100000            0.031000   0.000000   0.031000 (  0.02800=
0)
size =3D 1000000 1000000          0.031000   0.000000   0.031000 (  0.04300=
0)
size =3D 10000 10000              0.031000   0.000000   0.031000 (  0.03100=
0)
size =3D 100000 100000            0.032000   0.000000   0.032000 (  0.02300=
0)
size =3D 1000000 1000000          0.031000   0.000000   0.031000 (  0.04300=
0)

"better" in the sense that we're not suffering from bmbm's magic.

Kind regards

robert


--=20
remember.guy do |as, often| as.you_can - without end

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