Bug #696

1.9.0-0 is more faster in factrial test

Added by ariveira (Alexandre Riveira) over 3 years ago. Updated about 1 year ago.

[ruby-core:19601]
Status:Rejected Start date:10/29/2008
Priority:Low Due date:
Assignee:ko1 (Koichi Sasada) % Done:

0%
Category:-
Target version:2.0.0
ruby -v:1.9.1

Description

Mandelbrot factral test (http://www.timestretch.com/FractalBenchmark.html) in 1.9.1 is more slow than 1.9.0, results:


1.9.0-0 => 2.95
1.9.1-preview1 => 4.09

My hardware: pentium M, 1 GB RAM, Centos 5.2, gcc 4.1.2

History

#1
Updated by rogerdpack (Roger Pack) over 3 years ago

http://www.timestretch.com/FractalBenchmark.html
is the link
which SVN versions were you using? [or was that just the releases?]

#2
Updated by ariveira (Alexandre Riveira) over 3 years ago

I use 1.9.0-0 e 1.9.1-preview1 releases

1.9.0-0 ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.0-0.tar.bz2

1.9.1-preview1 ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.1-preview1.tar.bz2



Alexandre Riveira

#3
Updated by ko1 (Koichi Sasada) over 3 years ago

  • Assignee set to ko1 (Koichi Sasada)

#4
Updated by yugui (Yuki Sonoda) over 3 years ago

  • Priority changed from Normal to Low
  • Target version changed from 1.9.1 Release Candidate to 2.0.0

#5
Updated by naruse (Yui NARUSE) over 2 years ago

  • Status changed from Open to Rejected
  • ruby -v set to 1.9.1
Not a bug

#6
Updated by mame (Yusuke Endoh) over 2 years ago

Even if it is not a bug, a ticket must not be rejected as long as there is a
matter to be checked.


I tested the code on some versions of ruby.

- 1.9.0-0    0.040320 sec. (wrong result)
- 1.9.0-5    4.792150 sec.
- 1.9.1-p0   4.996654 sec.
- 1.9.1-p243 9.164635 sec.
- trunk      3.806966 sec.

1.9.0-0 output just empty lines, not mandelbrot set.  It seems to be caused
by the following bug (which is already fixed on later versions):

  $ ruby-1.9.0-0 -e 'v = -39/40.0; p [v, v-0.5]'
  [-0.975, -5.975]

Alexandre, thank you for your report and sorry for our late response.  Could
you check whether the issue is still duplicated on trunk?  If so, please
reopen this ticket (or register new ticket if you cannot reopen).

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