[rrd-users] Re: Excluding UNKN or NAN from CDEF
Eric_Mailing_List at rednarb.com
Mon Sep 27 16:59:19 MEST 2004
Stephan Harren wrote:
> Hi Eric,
> I think, it might be good for you to read the tutorials and manuals
> about rrdtool. But anyways, what do you want to achieve? Showing
> everything allright when there are NaN's? It is not very nice to say:
> "Okay, if I don't know what happened, probably everything was allright.".
Well, not really. I'm still graphing ups and downs (1's and 0's
respectively) but I only want the service level line to report the
average of everything EXCEPT unknowns. I don't want the SLA to be wrong
because the polling PC missed a poll. Therefor I only want actual data
to be graphed and unknowns ignored.
> But ok, there is one line that defines Cleaned:
> This line sets all NaN to 0.0, insert whatever you want instead of the 0.0.
Good suggestion but its result is not quite what I was looking for.
This makes all unknowns = 0.0 (or in my case I tried 1.0 - which made
the graphs look far more successful than they should be) Again, the only
acceptable result would be to eliminate unknowns entirely.
I'll go run through the tutorial pages again. It has been a while and
though I felt comfortable with RRDTool afterward, this seemingly more
complicated graph building syntax has be a little bewildered.
All questions to life's problems are easy, if you know the answer.
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