From: Eric Hodel <drbrain@...7.net>
Date: 2007-10-13T19:31:24+09:00
Subject: Re: Import gem to Ruby 1.9

On Oct 13, 2007, at 03:16 , murphy wrote:
>>>   (b) silently require 'rubygems' in initialization process.   
>>> rubygems
>>>       requires a lot of other libraries, so that memory consumption
>>>       might be an issue.
> don't forget performance (interpreter startup time)...on my machine,
> -rubygems (v0.9.4) makes Ruby starting nearly 10x slower.
>
> but I haven't tested 0.9.4.5.

The following times a representative of the steady state after the OS  
has cached everything.  0.9.4.5 starts up twice as fast as 0.9.4.

$ time ruby -v -rubygems -e 'p Gem::RubyGemsVersion'
ruby 1.8.6 (2007-09-23 patchlevel 5000) [powerpc-darwin8.10.0]
"0.9.4.5"

real    0m0.136s
user    0m0.068s
sys     0m0.025s
$ time ruby19 -v -rubygems -e 'p Gem::RubyGemsVersion'
ruby 1.9.0 (2007-10-13 patchlevel 0) [powerpc-darwin8.10.0]
"0.9.4.5"

real    0m0.181s
user    0m0.110s
sys     0m0.030s
$ time ruby -v -Ilib -rubygems -e 'p Gem::RubyGemsVersion'
ruby 1.8.6 (2007-09-23 patchlevel 5000) [powerpc-darwin8.10.0]
"0.9.4"

real    0m0.280s
user    0m0.184s
sys     0m0.050s


--
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