From: Kyle Schmitt <kyleaschmitt@...>
Date: 2008-09-24T05:19:21+09:00
Subject: Re: Breaking apart arrays for arguments?

On Tue, Sep 23, 2008 at 2:19 PM, Kyle Schmitt <kyleaschmitt@gmail.com> wrote:
>> I run your code without any changes, and I got:
>>
>>      user     system      total        real
>> unshift pure  1.469000   0.046000   1.515000 (  1.547000)
>> unshift, flatten at end  3.156000   1.047000   4.203000 (  4.250000)
>>
>> RUBY_VERSION 1.8.6, RUBY_PATCHLEVEL 287, RUBY_RELEASE_DATE 2008-08-11
>> Windows One-Click Installer
>>
>> That's strange.
>>
>> TPR.
>
> Very odd indeed, because those are more like the numbers I would have expected!
> then again I'm running an old old version, the official binary for CentOS:
> ruby 1.8.5 (2006-08-25)
>
> Guess I need to compile something better.

Even wierder now.  I grabbed the latest 1.9 source from subversion
compiled & installed.

The 1.9 times are better than I was getting with 1.8.5, but unshift,
flatten was still hugely faster....  I'm gonna have to try this again
at home with a box that has 1.8.6 on it.

with 1.9 from subversion
      user     system      total        real
unshift pure  3.900000   0.110000   4.010000 (  4.691366)
unshift, flatten at end  0.430000   0.010000   0.440000 (  0.501283)

with 1.8.5
      user     system      total        real
unshift pure  4.050000   0.670000   4.720000 (  5.635800)
unshift, flatten at end  1.660000   0.570000   2.230000 (  2.413984)