Effect of partitioning on wear-leveling

[Ian Lepore]

On Tue, 2016-03-22 at 17:26 +1100, Peter Jeremy wrote:
> On 2016-Mar-21 21:47:39 -0600, Warner Losh <imp at bsdimp.com> wrote:
> > So let’s do the math. 512MB cards tended to have write speeds of
> > maybe 6MB/s.
> > At 6MB/s, that’s about 518MB/day, or one drive write per day. Most
> > SD cards,
> 
> I think you dropped some zeroes there.  6MB/s == 518,400MB/day ==
> 518GB/day.
> That's 1000 drive writes/day - which is non-trivial.
> 

Because the hardware I was using was old and buggy (byte-swapping all
data in software, etc), the actual IO rate was just under 1MB/sec, but
that's still closer to the kind of numbers you mention than to
Warner's.

-- Ian