JFFS2 New bie queries.

Jim Carter jimc at math.ucla.edu
Wed Jun 27 12:40:53 EDT 2007

On Wed, 27 Jun 2007, Ram wrote:

> When i do command 'du -sh' i get a size which is totally different
> from command 'df' (disk free)

JFFS2 compresses the data.  I get about 2:1 comression with ARM executable 
cdde; it looks like you got a little more, maybe because the content is 
more predictable, e.g. contains some text.  Don't expect it to be effective 
on already compressed files, e.g. MP3, JPEG, AVI.

Now if I could only put JFFS3 on a 1 GB removeable MMC card, bypassing the 
(on-chip?) disc emulation layer...  Sigh.  This is on a Nokia 770.

James F. Carter          Voice 310 825 2897    FAX 310 206 6673
UCLA-Mathnet;  6115 MSA; 405 Hilgard Ave.; Los Angeles, CA, USA  90095-1555
Email: jimc at math.ucla.edu    http://www.math.ucla.edu/~jimc (q.v. for PGP key)

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