From: 7stud -- <bbxx789_05ss@...>
Date: 2008-04-07T13:29:21+09:00
Subject: Re: Do arrays use up alot of memory space?

Clement Ow wrote:
> --------------------------------------------------------------------------------
> $options=
> ["2008*", "2008*", "700*", "2008*", "2008*"]
> 
> $source=
> %w[C:/movtest/testing
> C:/movtest/testing/new
> U:/movtest/source
> U:/movtest/new
> U:/movtest/new1]
> 
> $dest=
> %w[U:/test_1/
> U:/dest1/
> U:/dest2/
> U:/dest3/
> U:/dest4/]
> 

You have 3 arrays with 5 short strings in them.  A character in a string 
takes up 1 byte of memory.  I don't know exactly what the overhead for 
an array is, but it is comparatively tiny--although you never know with 
ruby.   I would guess all your arrays would take up less than 1,000 
bytes or 1 kB in memory.  That's tiny.



> while i<=j && i1<=j1 && i2<=j2
> 
> Dir.chdir($source[i])
> print "\nSource: " + Dir.getwd + "\t\n"
> print "Dest: " + $dest[i1] + "\n"
> print "Options: " + $options[i2] +"\n"
> FileUtils.cp_r Dir.glob($options[i2]), $dest[i1]
> print "File Mov Test:Success"
> i+=1
> i1+=1
> i2+=1
> end
> 
> --------------------------------------------------------------------------------
> Apparently, when moving large files (i.e file size 50mb) it takes
> relatively long as when i use ROBOCOPY (a robust copying software by
> MSServer), but I cant use robocopy because it has it's limitations,hence
> i used ruby. As I will be running the ruby program on a server, I cant
> afford to use too much memory while transferring files from one folder
> to another as the server is used for more impt tasks like running impt
> applications in the office.
> 
> So is there anything that i could do to quicken the copying process
> without compromising on the ability to have different path names and
> options for copying files? (i understand that arrays do take up more
> memory)
> Thanks in advance. =)
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