[LEDE-DEV] [PATCH] base-files: seed /dev/urandom

Daniel Curran-Dickinson daniel at daniel.thecshore.com
Mon Jun 13 20:50:15 PDT 2016


On Mon, 2016-06-13 at 22:10 +0200, Etienne Champetier wrote:

> Before we try to minimize writes, how much writes are we talking about?
> my openwrt routers have multiple months of uptime, and even if we get
> down to 1 week, that gets us to 53 writes a year.
> How much writes can a flash handle these days?

I'm told that even cheap wear-levelling and flash chips from 4-5 years
ago with even 4 MB flash that it's really non-issue (and done the math
for what would be the case if wear levelling worked as claimed, on all
blocks, not just currently unwritten; the real question is whether
wear-levelling works as claimed, or more to the point whether there is
any *hard data* that says wear levelling does *not* work as claimed, or
whether persistent anecdotal stories of worn out flash are based on
urban legends, or classic mis-attribution).

Regards,

Daniel




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