Hi Again,

The issue I am refering is about a DVD ( source tared files, lots of PDF
books, some movies...  A whole Data DVD, 4.4 Gb of it...  60 mn to
copy/paste to ~/Desktop...

2009/9/30 Stephen John Smoogen <[log in to unmask]>

> On Wed, Sep 30, 2009 at 11:43 AM, Alexandre Pereira
> <[log in to unmask]> wrote:
> > Hi Forum
> >
> > I have installed SL-5.3 x86_64 default installation/partitioning scheme
> in
> > my laptop... the only... call it "different" thing that I have done is an
> > LVM Luks encryption of my HDD ( It is a laptop, and I carry a lot of
> sensble
> > stuff in it... )  In know it is not "MIL-SPEC hard" as a pkcs #13
> protocol (
> > Elliptic Curve cryptography over discrete fields ) but man...  I do not
> > carry warhead design plans, and sizing calculations with me...   :-)
> >
> > Anyway...   Trying to dump the content of DVD data, 4.5 Gb of it into my
> > desktop took me about 70mn...  THIS IS NUTS...    Trying to do the same
> in
> > another install , unencrypted this time, in another machine ammounted to
> the
> > same...
> >
> > now, this IS an issue...   this laptop will be used in heavy number
> > crunching engineering applications...  meaning disk I/O operations in the
> GB
> > range ( Finite elements meshes, Genetic algorithm operations... massive
> data
> > transfers to put it simply )
> >
> > Can this be solved... ?
> >
> > I used (aaarrgghhhh !!! ) Ubuntu with this same lappy and this problem
> was
> > not there....
> >
>
> Well you can give a lot more info because there isn't enough to help with:
> 1) What kind of laptop. What kind of disk drive? What kind of DVD drive
> 2) What version of Ubuntu did you use (there a ton of different
> versions so it will help to figure out what it was )
> 3) what does iostat or another performance program say
> 4) Did you get the data from a DVD or network? You reference a desktop
> and a laptop.. not sure if you mean 2 differnet types of hardware or
> one.
>
> Realize that  IO on laptops is slow. Your standard Laptop drive is
> 5400 RPM, and the channel to talk through it is usually not even as
> fast as commodity desktops.
>
>
>
>
> --
> Stephen J Smoogen.
>
> Ah, but a man's reach should exceed his grasp. Or what's a heaven for?
> -- Robert Browning
>