On Wed, Aug 22, 2007 at 04:10:55PM +0400, Oleg Derevenetz wrote:
> Aha, so updating with value U at T-1 will not cause wrap when updating with
> value 0 at T. Really I guess something like that.
The rate is calculated like this:
delta(value) CurrentValue - PreviousValue
rate = ------------ = ----------------------------
delta(time) CurrentTime - PreviousTime
For viewers still not using a fixed width font:
Rate equals delta(value) divided by delta(time)
which equals (CurrentValue-PreviousValue) divided by
(CurrentTime-PreviousTime).
If "PreviousValue" is unknown, then so is "CurrentValue - PreviousValue".
If this number is unknown, then dividing it by 1 (one second) also
results in unknown. The rate is thus unknown, not a huge number
which you currently suffer from.
--
Alex van den Bogaerdt
http://www.vandenbogaerdt.nl/rrdtool/
_______________________________________________
rrd-users mailing list
[email protected]
https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
