From: Robert Klemme <shortcutter@...>
Date: 2009-01-19T16:33:07+09:00
Subject: Re: FileUtils.cp_r is slow?

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


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