Ideal NAND flashes for JFFS2 or YAFFS

Joakim Tjernlund joakim.tjernlund at transmode.se
Tue Sep 8 14:01:16 EDT 2009


Bill Gatliff <bgat at billgatliff.com> wrote on 08/09/2009 18:21:58:
>
> Justin Treon wrote:
> > For NAND I think there is a simple flow chart to pick your filing system.
> >
> > Do you have a partition bigger than 256 MBytes?

Oh yes, probably 512MB-1GB, possibly more

> > If YES: Use UBIFS (@128 MB you can argue the point)
> > If NO: Do you have a LOT of RAM?
> >    If YES: Use YAFFS2 (It is fast, but RAM hungry)

This is news to me. I always had the impression that JFFS2 needed
more RAM.

> >    If NO: Use JFFS2
> >
>
> With 128MB and/or 1GB partitions, does YAFFS2 use more memory than
> UBIFS?  It does seem to me that YAFFS2 mounts a tad faster, though I
> haven't broken out the stopwatch or anything (yet).

I too want to know.

 Jocke




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