On Mon, 08 Jun 2009 11:02 -0600, "Doug McNutt"
<douglist_at_macnauchtan.com> wrote:
> At 11:45 +0200 6/8/09, Daniel Stenberg wrote, and I snipped:
> >The average speed that curl shows is the average speed so far during the entire transfer. Going down 2 out of 1800 is about a tenth of a percent. It's not like it is a significant amount that I find it worth to lose a lot of sleep over.
>
> As a certified quantum mechanic I think the problem may well be an
> example of the uncertainty principle. Those one-per-second calculations
> are triggered by some kind of interrupt that is not phase related to the
> passage of information in another thread. It may well be impossible to
> get a precise status of the data stream when activation of the progress
> code is a bit like opening Schroedinger's box of bits. While the
> calculation is proceeding the it count may, and may not, get incremented.
>
> The overall average rate ought to be the current total bit count divided
> by the total time. Is it? I spend a significant fraction of my life
> teaching that one should never average a list of averages,
>
> The world needs more folks like Eric who notice little things like that.
>
> --
> --> If you are presented a number as a percentage, and you do not clearly
> understand the numerator and the denominator involved, you are surely
> being lied to. <--
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Received on 2009-06-08