Flash Statistics

Josh Boyer jwboyer at jdub.homelinux.org
Sat Apr 23 08:04:44 EST 2005

On Fri, 2005-04-22 at 14:53 -0700, Eugene Surovegin wrote:
> On Fri, Apr 22, 2005 at 05:19:17PM -0400, Jeff.Fellin at rflelect.com wrote:
> > 
> > I am looking for information in the kernel or elsewhere about flash usage
> > statistics. I'm interested in knowing how
> > many times a sector has been erased and written to. This doesn't have to be
> > for all time, since other tools
> > can erase and write the flash (U-boot), but just what the activity during
> > application processing. We use the
> > flash to store configuration files that are changeable and would like to
> > determine the expected lifetime
> > of the chips at use sites.
> > 
> > Any pointers to places where flash statistics are maintained or tools to
> > collect these statistics is
> > appreciated.
> Flash datasheet must have this information.

They have information on the maximum number of writes per eraseblock,
yes.  But I think Jeff is looking for some statistic gathering tools he
can use to figure out how his application workload is effecting flash.
I doubt that is in any datasheets ;).


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