On 25.02.2009 18:16, john maclean wrote:
> k = [nil] *50000
> 
> is there a way to get some idea of how much memory k will use, or even
> how much mem it may use as k.size changes?
> 
>  ruby -e 'p Array.methods.sort' does not show anything obvious.

And there isn't an obvious solution.  You can check the archives - this 
discussion comes up from time to time.  Basically it is unclear what 
"memory taken up by an object" means.  The simplest answer is the amount 
of memory that is needed to store the object itself.  But what about 
references?  Do you count objects in that are referenced by the Array? 
If so, how many levels do you track?  Etc. You even might not find your 
memory problem by only looking at Array memory (assuming you have a 
memory issue).

Kind regards

	robert