Re: Reiser4 status: benchmarked vs. V3 (and ext3)

Alan Cox
2003-07-27T15:37:49Z

On Sul, 2003-07-27 at 16:30, Bernd Eckenfels wrote:
> why is jffs2 so slow, if the cpu overhead can be totally neglected when
> writing to such slow media? I would asume a FS whic his optimized for not
> wearing out flash cards would reduce the IOs to the absolute minimum and
> therefore be fast be definition?

Flash cards are -slow-. Also jffs2 is mostly synchronous so it writes
the long bit by bit. The flash wear is on erase not write. You could
certainly teach jffs2 a bit more about batching writes. The other issue
with jffs2 is startup because it is a log you have to read the entire
log to know what state you are in