Re: jffs2 flash life calculation

On Wed, 2003-08-27 at 11:06 +0200, Jörn Engel wrote:
> Use some assumptions for an estimate:
> 100,000 erase cycles.
> no filesystem overhead.
> data doesn't compress at all.
> perfect wear levelling.

You're also assuming you can neglect the amount of data which are
_rewritten_ during garbage collection. 

That's probably a reasonable assumption in this case given the usage
pattern, and given that the flash isn't likely to be near full to
capacit.

But for the benefit of the peanut gallery I should point out that if
you're looking to do similar calculations for a file system with more
normal usage patterns and which is run closer to its full storage
capacity, garbage collection becomes much more relevant.

-- 
dwmw2


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