From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2005-03-20T11:37:47+09:00
Subject: Re: RCR 296: Destructive methods return self



> -----Original Message-----
> From: Nikolai Weibull 
> [mailto:mailing-lists.ruby-talk@rawuncut.elitemail.org] 
> Sent: Saturday, March 19, 2005 6:12 PM
> To: ruby-talk ML
> Subject: Re: RCR 296: Destructive methods return self
> 
> A comment on your benchmark: doesn't it make more sense to do 
> the tests on new strings each time?

Yeah, you're right.  I just used string literals instead of variables.
With that I got:

C:\eclipse\workspace\ruby-foo\benchmarks>ruby bang.rb
      user     system      total        real
capitalize  2.103000   0.000000   2.103000 (  2.132000)
capitalize!  1.762000   0.000000   1.762000 (  1.793000)
chomp  1.853000   0.010000   1.863000 (  2.072000)
chomp!  1.622000   0.000000   1.622000 (  1.652000)
delete  5.578000   0.000000   5.578000 (  5.807000)
delete!  5.348000   0.000000   5.348000 (  5.527000)
downcase  2.093000   0.000000   2.093000 (  2.113000)
downcase!  1.722000   0.000000   1.722000 (  1.812000)
gsub  4.237000   0.000000   4.237000 (  4.346000)
gsub!  4.125000   0.020000   4.145000 (  4.315000)
lstrip  1.993000   0.010000   2.003000 (  2.043000)
lstrip!  1.703000   0.000000   1.703000 (  1.852000)
next  1.892000   0.010000   1.902000 (  2.153000)
next!  2.474000   0.000000   2.474000 (  2.543000)
reverse  1.943000   0.020000   1.963000 (  1.972000)
reverse!  1.522000   0.000000   1.522000 (  1.723000)
rstrip  1.943000   0.010000   1.953000 (  2.112000)
rstrip!  1.652000   0.000000   1.652000 (  1.662000)
slice  2.213000   0.010000   2.223000 (  2.233000)
slice!  4.487000   0.040000   4.527000 (  4.716000)
strip  2.053000   0.010000   2.063000 (  2.103000)
strip!  1.632000   0.000000   1.632000 (  1.752000)
sub  4.086000   0.020000   4.106000 (  4.165000)
sub!  3.645000   0.010000   3.655000 (  3.815000)
swapcase  2.374000   0.000000   2.374000 (  2.433000)
swapcase!  1.982000   0.010000   1.992000 (  2.103000)
tr  3.626000   0.000000   3.626000 (  3.694000)
tr  3.114000   0.000000   3.114000 (  3.295000)
tr_s  3.605000   0.010000   3.615000 (  3.965000)
tr_s!  3.195000   0.010000   3.205000 (  3.724000)
upcase  2.263000   0.010000   2.273000 (  2.353000)
upcase!  1.913000   0.010000   1.923000 (  1.993000)

Definitely an improvement.  So, I guess that still leaves the question
of what qualifies as "noticeably slower". ;)

Regards,

Dan