Performance of the MTD device and JFFS2

[Artem B. Bityuckiy]

On Fri, 2005-01-21 at 10:17 -0800, Vahid Fereydunkolahi wrote:
> I erased the whole flash. I copied a 500KB file to the
> NAND flash. Then I copied the file from the NAND flash
> to the same directory with different name. This means
> read and write operation on empty flash. With the old
> version it takes around 2 seconds, with the new
> version it takes more than 12 seconds (I am using the
> ZLIB for compression).
> 
> I wish I had the version iformation of the old MTD and
> JFFS2, but I do not (It should be from 4 month ago).
> 
> --vahid
> 
Sorry Vahid, don't know what happened. May only suggest:
1. Check may be your NAND flash driver has degraded. Why do you think
the reason is JFFS2?
2. Try to profile your linux system.
3. Try to find your old linux..