Re: [SLUG] MP3 inflation

From: Chuck Hast (wchast@gmail.com)
Date: Sat Jan 13 2007 - 16:48:41 EST


On 1/13/07, Daniel Jarboe <daniel.jarboe@gmail.com> wrote:
> > > one file which is 4MB on the CD is 5.9MB when copied to the HD
>
> For a quick test I just copied a 7401600 byte file from CD (Joliet UCS level
> 3, Rock Ridge V1, 2048 block size) to an ext3 formatted (4096 block size,
> 32768 blocks per group, 16384 inodes per group, 512 inode blocks per group)
> device... as repoted by "isoinfo -d -i" and "dumpe2fs -h".
>
> du file on the mounted CD reports 7229 and on disk 7244, a difference of 15K
> (0.2075% increase).
>
> just grabbed another one, a 10883072 byte file reports 10628 on CD and 10644
> on disk, a difference of 16K (0.1505% increase)
>
> On the smallest file I could find on this CD, 2281790 bytes, du reports 2229
> on CD and 2236 on disk, 7K (0.3140% increase).
>
> To lose 1.9 megs (>47%) in a single file with any "sane" block size seems...
> extreme. Are you going to report the filesystem type and attributes, and
> and how you are generating your numbers (ls -l, du options, etc). We might
> be able to help you figure it out.
>

I have been looking at it with the KDE interface, I was trying to find where
the blasted CD was mounted in the system. I am running SuSE 10.1 and
it shows the CD as being mounted under /media/dev/hdc, but when I go
in there to find the thing and look at it with other tools it is not
there... So it
is being mounted elsewhere, and I am not finding the thing...

I am going to have to look into this more, I have until now never had a CD
that I could not find mounted in one of the common locations, but this is
not working out that way. Usually the CD's are mounted under /media,
and that is what it is telling me but when I go in there the bugger is not
there. So I am going to have to figure out where it is mounting the thing, I
assume that it is mounting it differently because it is a audio CD.

-- 
Chuck Hast  -- KP4DJT --
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."
-----------------------------------------------------------------------
This list is provided as an unmoderated internet service by Networked
Knowledge Systems (NKS).  Views and opinions expressed in messages
posted are those of the author and do not necessarily reflect the
official policy or position of NKS or any of its employees.



This archive was generated by hypermail 2.1.3 : Fri Aug 01 2014 - 20:33:10 EDT