From: Luc Evers <lucevers@...>
Date: 2009-01-19T17:39:36+09:00
Subject: Re: FileUtils.cp_r is slow?

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   For file backup I'm using rsync on a Linux system, its possible to start
this tool from Ruby.
   Rsync copy the difference between the files and is very fast.

   I don't now rsync exist in Windows (maybe Powershell), but its possible
to run on windows via Cygwin.


   Luc.

On Mon, Jan 19, 2009 at 8:33 AM, Robert Klemme
<shortcutter@googlemail.com>wrote:

> 2009/1/17 Paul Lynch <plynchnlm@gmail.com>:
>
> > On Wed, Jan 14, 2009 at 12:45 PM, Paul Lynch <plynchnlm@gmail.com>
> wrote:
> >
> >> I wrote a ruby script to backup files from my hard drive to my flash
> >> drive.   For some reason, with one of my flash drives, copying files
> >> with FileUtils.cp_r is about 250 times slower than if I drag and drop
> >> the files from one drive to the other in Windows.  I'm suspecting a
> >> buffer size problem.  Is there a way to control the buffer size cp_r
> >> selects?  If not, what alternatives are there to FileUtils.cp_r?  (I
> >> am about to try writing my own, but someone must already have a
> >> solution....)
>
> Just another idea: if your files reside on two different physical
> disks you might get a benefit from separating reading and writing into
> two different threads.
>
> Kind regards
>
> robert
>
>
> --
> remember.guy do |as, often| as.you_can - without end
>
>

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