[exim-dev] [Bug 428] Greatly expand ratelimit features

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Autor: Tony Finch
Datum:  
To: exim-dev
Betreff: [exim-dev] [Bug 428] Greatly expand ratelimit features
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http://bugs.exim.org/show_bug.cgi?id=428

Tony Finch <dot@???> changed:

           What    |Removed                     |Added
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                 CC|                            |dot@???





--- Comment #14 from Tony Finch <dot@???> 2007-07-30 19:22:28 ---
A rate of 0 is correct for the first message. The essence of the computation
is:

interval = this_time - prev_time;
i_over_p = interval / period;
a = exp(-i_over_p);
new_rate = (1 - a) / i_over_p + a * old_rate;

For the first message, the interval is effectively infinite, so

 interval = inf;
 i_over_p = inf / period = inf;
 a = exp(-i_over_p) = exp(-inf) = 0;
 new_rate = (1 - a) / i_over_p + a * old_rate
          = 1 / inf + 0 * old_rate
          = 0;


This has the advantage that you can set the rate limit arbitrarily low.

I'm not sure whether or not the noupdate in your previous posts is a red
herring. The debugging output you posted is consistent with a stray noupdate. I
can't understand what you are trying to suggest in your last post.


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