From: Darrin Thompson <dthompson@...>
Date: 2001-11-03T01:55:47+09:00
Subject: [ruby-talk:24179] Re: Performance of Marshal.dump

Apologies for the length of this.

Could I get out of that "assignment" if instead I provide a simple 
program that duplicates the problem for me?

Try this. I'm using 1.6.4 right now.

class MyData
    attr_accessor (:a, :b, :c, :d, :e)
    def initialize(a, b, c, d, e)
        @a=a
        @b=b
        @c=c
        @d=d
        @e=e
    end
end


array=Array.new

(1..6000).each { | i |
    array.push( MyData.new(i, "zippy", "foo", "bar", "x"))
}

value=Marshal.dump(array)

Here is the output from the line profiler (snipped):

=========== problem.rb
 Line time%  time  count
    1   0%   0.00      1 class MyData
    2   0%   0.00      1        attr_accessor (:a, :b, :c, :d, :e)
    3   0%   0.00      1        def initialize(a, b, c, d, e)
    4   1%   0.82   6000                @a=a
    5   0%   0.69   6000                @b=b
    6   1%   0.81   6000                @c=c
    7   1%   0.81   6000                @d=d
    8   1%   1.95   6000                @e=e
    9                           end
   10                    end
   11                   
   12                   
   13   0%   0.00      1 array=Array.new
   14                   
   15   0%   0.00      2 (1..6000).each { | i |
   16   1%   1.81   6000        array.push( MyData.new(i, "zippy", 
"foo", "bar", "x"))
   17                    }
   18                   
   19  93% 137.74      1 value=Marshal.dump(array)


Darrin

ts wrote:

>>>>>>"D" == Darrin Thompson <dthompson@characterlink.net> writes:
>>>>>>
>
>D>         value=Marshal.dump array
>
> Can you try it with 1.7.1 and see if you have a difference ?
>
>
>Guy Decoux
>