JFFS3 & performance

Artem B. Bityuckiy dedekind at infradead.org
Wed Jan 12 13:43:53 EST 2005


On Wed, 12 Jan 2005, [iso-8859-1] Jörn Engel wrote:

> On Wed, 12 January 2005 19:27:59 +0100, Thomas Gleixner wrote:
> > 
> > Missing error
> > 
> > There is another type of error, which came up lately with AND FLASH. If
>                                                            ^^
> You mean NAND, right?
Think AG-AND flashes. I'm not know much about this technology either. 

> 
> > you leave a block untouched in a range of blocks and erase/program the
> > surrounding blocks, then the untouched block is likely to have bitflips.
> > GC likeliness to GC clean blocks from time to time will cover this, but
> > if you have a big number of clean blocks you might get into trouble.
> > 
> > A strong argument for using seperate partitions for static and dynamic
> > data.
> 
> Wouldn't that also require a DMZ of some size between static and
> dynamic data?  For example, 4MB static, 1MB unused, rest dynamic?
> 
> Jörn
> 
> -- 
> If you're willing to restrict the flexibility of your approach,
> you can almost always do something better.
> -- John Carmack
> 

--
Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.




More information about the linux-mtd mailing list