Hello Brad,
On 3/5/07, Brad Beveridge <
brad.beveridge@gmail.com> wrote:
> Hi all,
>
> > YAFFS2 uses OOB area more intensively than JFFS2, so in order to
> > read/write things it issues more NAND commands generally, which turns
> > to be a performance drop for GPIO/bitbanging NAND controller
> > emulation.
>
> I'm somewhat puzzled by this statement. I'm not very familiar with
> JFFS2, but if it writes to the OOB at all, then it issues exactly as
> many write commands as yaffs2 - ie one command to write a whole page,
> including the OOB area.
no, jffs2 uses OOB only for cleanmarkers, placing one cleanmarker per
eraseblock per whole partition lifetime, so that's not the case.
> I'd be really interested in hearing what the NAND usage pattern of JFFS is.
I guess this is to be discussed in the different ML :)
Vitaly
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