[rrd-developers] RFC new DS type DGAUGE
kbrint at rufus.net
Sat Nov 15 18:15:01 CET 2008
On Sat, Nov 15, 2008 at 03:56:15PM +0100, Tobias Oetiker wrote:
> A new datasource type called DGAUGE. It would always *round down*
> the timestamp to the last step.
I like it. I have a couple places where I specifically do that in order
to get "real" values.. Before I update I do something like:
$time -= $time % $step
In my case, this is usually for things that are updated once daily but not
> To not break things too much, multiple updates to DGAUGE within the
> same STEP would get averaged without regards to the actual
> timestamp the update was provided.
Averaged how? $v = ($old + $new)/2 ?
If there are 3 updates we'll end up with:
$v = $older/4 + $old/4 + $new/2
... and so on. Is that OK?
> In that way, peple would see the data they put in, appear
> in 1 step AVERAGE, MIN and MAX RRAs as long as they manage to put
> in only one update per step.
> coments ?
kevin brintnall =~ /kbrint at rufus.net/
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