From: "ara.t.howard" <ara.t.howard@...>
Date: 2007-07-22T12:14:51+09:00
Subject: Re: Array flatten memory "leak"?


On Jul 21, 2007, at 6:08 PM, Ron M wrote:

> But the strange (to me) thing is that is that the next loop -
> which seems like it shouldn't be allocating more memory since
> nothing gets saved to variables - where the program quickly
> grows to over 200MB

but assigning to variables isn't what determines whether memory is  
used, it's a simple matter of object creation:

cfp:~ > cat a.rb
#! /usr/bin/env ruby
STDOUT.sync = true
require 'yaml'

def n_objects
   n = 0 and ObjectSpace.each_object{ n += 1 }
   n
end

y 'n_objects_0' => n_objects

65635.times{ "foo" }

y 'n_objects_1' => n_objects

GC.start

y 'n_objects_2' => n_objects



cfp:~ > ruby a.rb
---
n_objects_0: 2599
---
n_objects_1: 28143
---
n_objects_2: 1648



if it were then n_objects_1 wouldn't show such a huge increase: we've  
assigned no variables here.  my point is that what is important is  
object creation and when those objects get freed by the GC.

regards.

a @ http://drawohara.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama