Re: [RFC] bcache-status

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On Wed, Sep 04, 2013 at 10:52:53PM +0200, Rolf Fokkens wrote:
> I'm not sure if I understand.
> 
> On 09/04/2013 10:26 PM, Darrick J. Wong wrote:
> >Yeah... I calculate total cache size, then cache-used = cache-size * whatever
> >percentage bcache reports.  It won't add up exactly due to rounding errors.
> >0.999 -> 1.00.  That's rather a lot, really.
> Is the following (snippet of the output I sent) the result of
> rounding errors?
> 
> Total Cache Size            1.00GiB
> Total Cache Used            204.00MiB    (10%)
> Total Cache Unused          1.00GiB    (90%)
> 
> I mean: the percentages are 10% and 90%..

Oops, this was a Py3 v. Py2 issue -- Python3 saw the '%.2f' in the function
that pretty-printed cache sizes and would fp-divide the two integers, whereas
Pyhon2 saw that we were trying to divide two integers and used integer
division. Fixed in the Gist.

Kent: Any chance you'd like to pick up bcache-status into bcache-tools.git?

(Or really, anyone who has commit access to that repo.)

--D
> 
> >>- "Dirty Data" is -6 MB?
> >I think this was fixed in 3.11.
> OK, so that is a kernel issue.
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