[Yaffs] YAFFS vs JFFS2

[Thomas Gleixner]

On Tue, 2004-11-23 at 15:25 +0100, Lorenzo PARISI wrote:
> Hi,
> 
> I've done this writing on NAND:
> 1) 4000 files whit size 4k
> 2) 250 files, 64k
> 3) 32 files, 1M
> 4) 4 files, 8M
> 5) 2 files, 16M
> 6) 1 file with size 1M.
> 
> And, the results are:
>       JFFS2        YAFFS
>       -----        -----
> 1)    1m50         2m1
> 2)    0m15         0m42
> 3)    0m17         1m18
> 4)    0m17         1m21
> 5)    0m17         1m24
> 6)    0m25         1m28
> 
> The results are much differents. Why?

JFFS2 is compressing the files and writes less bytes to the chip.
Depending on the file content the compression can be fast and reduce the
size quite well. So it's hard to compare.

tglx