From: "Jim V. Tess" <jimvtess@...>
Date: 2006-03-30T10:03:27+09:00
Subject: Re: Speed issue on Windows

Wilson Bilkovich wrote:
> Try running the built-in sample "cal.rb" with ruby -rprofile.
> I don't have two identical boxes right next to each other right now, 
> but:
> WinXP SP2, dual Xeon 2.8GHz, 2GB of RAM: 5.031 seconds.
> Ubuntu 5.10, single P4 3.0GHz, 1GB of RAM: 2.110 seconds.

I built Ruby with VC++ 2005 from recent source (1.8.4 doesn't compile 
under VC++ 2005). My times were:

Ruby 1.8.4 preview 3: 5.59 seconds
Ruby 1.9 w/ VC++ 2005: 1.49 seconds  ***

***This isn't a fair comparison, however, because I notice that the call 
counts are quite different between the two runs--presumably due to 
source changes since 1.8.4.

I have run other comparisons between the two, and I find the VC++ 2005 
version to be anywhere from 10 to >100% faster; in particular, bignum 
arithmetic is over twice as fast.

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