On Tue, 14 Nov 2006 15:10:33 -0800, Brad Fuller <brad at sonaural.com> wrote:

> Are you going to write more than a million times? Isn't that the current
> known limitation regarding writing?

Well, it depends entirely on the FLASH device. Most of the ones I've seen
are closer to 10,000 - 100,000 times. At 100,000, if I'm writing once per
second while the thing is operating, that's only 27 hours of use.

> BTW, are you using a special Linux that can remap areas of the FLASH
> that have been written too much? Is there such a beast?

Linux uses JFFS2, which is very good at avoiding this problem:

http://en.wikipedia.org/wiki/JFFS2

However, if you're writing enough data, you can eventually run into it,
even with something like JFFS2.

I just want to make sure I don't run into any problems that are caused by
some journaling sub-system of the OO database that needs to write stuff
every time you read something, or something like that.

Later,
Jon

--------------------------------------------------------------
   Jon Hylands      Jon at huv.com      http://www.huv.com/jon

  Project: Micro Seeker (Micro Autonomous Underwater Vehicle)
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