From: "M. Edward (Ed) Borasky" <znmeb@...>
Date: 2006-10-25T16:04:21+09:00
Subject: Re: [OT] Re: How do I tell when I'm on Cygwin?

M. Edward (Ed) Borasky wrote:
> Wilson Bilkovich wrote:
>> The only real reason not to use it that I'm aware of is that it is
>> fairly slow.
>> Of course, the native Ruby on Win32 is 10x slower than on Linux for
>> many tasks, so maybe that's not much of a selling point.
>>
>>
> 
> Really? Curt, Austin? Is native (one-click) Ruby 1.8.5 slower on, say, a
> 933 MHz Pentium III running Windows than, say, a gcc-compiled (O2) Ruby
> on the same hardware?
> 
> Let me drag out my matrix benchmark and dual-booted (Win XP and Gentoo
> Linux) Athlon XP laptop and see for myself!
> 
> Be back later, as they say in IRC!
> 
> 

OK ... here we go. I actually had to re-install CygWin; I had deleted it
because I wasn't using Windows on my laptop. By the way, speaking of
laptops, I want all of you at RubyConf to know that it has gotten over
the sadness it was feeling as a dual-booted Window and Linux machine
being surrounded by Macs.

From

http://rubyforge.org/cgi-bin/viewvc.cgi/MatrixBenchmark/athlon-xp-2000.log?root=cougar&view=co

> A brief test of three Ruby implementations on the same processor. First, the
> processor specifications (Linux "/proc/cpuinfo"):
> 
> processor	: 0
> vendor_id	: AuthenticAMD
> cpu family	: 6
> model		: 8
> model name	: mobile AMD Athlon(tm) XP 2000+
> stepping	: 1
> cpu MHz		: 1656.440
> cache size	: 256 KB
> fdiv_bug	: no
> hlt_bug		: no
> f00f_bug	: no
> coma_bug	: no
> fpu		: yes
> fpu_exception	: yes
> cpuid level	: 1
> wp		: yes
> flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow ts fid vid
> bogomips	: 3313.62
> 
> 
> Now, the times.
> 
> Native Windows One-Click Ruby Installer:
> ruby 1.8.5 (2006-08-25) [i386-mswin32]
> Matrix of dimension 256 times its inverse = identity? true
> 137.658000   0.060000 137.718000 (137.719000)
> 
> CygWin Ruby:
> ruby 1.8.5 (2006-08-25) [i386-cygwin]
> Matrix of dimension 256 times its inverse = identity? true
> 137.598000   0.110000 137.708000 (137.768000)
> 
> Gentoo Linux Ruby
> Compiled from source with GCC 4.1.1 -O2 -march=athlon-xp -fomit-frame-pointer
> ruby 1.8.5 (2006-08-25) [i686-linux]
> Matrix of dimension 256 times its inverse = identity? true
> 107.380000   0.010000 107.390000 (107.425632)

So, it appears that on this benchmark, the One-Click and CygWin
interpreters are equal!! But GCC 4.1.1 beat them both.

Back to RAMEAU. :)