Mark,
yes, as I pointed out in my last reply, you can use 3 RRAs with
MIN, AVERAGE and MAX consolidation and then plot the data such dat
you draw an area between MIN and MAX and overlay the AVERAGE line.
The approach is to use CDEF to build the difference between MIN and
MAX, then draw MIN withou
On Fri, Jul 20, 2007 at 11:29:44PM +0200, Peter Mueller wrote:
> This does not work:
> VDEF:value=mydist,LAST
> VDEF:distpercent=221,value,-,100,*,121,/
> GPRINT:distpercent:"%2.2lf"
>
> The problem is in the second line when I calculate distpercent.
> How can I do this? Any other way?
Try cdef
The thing that's interesting about this whole situation is that on one
level rrd appears to draw a cleaner graph and the gnuplot one looks a
little fuzzier, but I also think the gnuplot provides valuable
information that gets lost, and probably missed with rrd. If my
examples were disk perform
Hi Mark,
I will add the following to the rrdcreate manpage
=over
=item AVERAGE
the average of the data points is stored.
=item MIN
the smallest of the data points is stored.
=item MAX
the largest of the data points is stored.
=item LAST
the last data points is used.
=back
Note that
Mark,
think about this:
you give rrdtool 3 samples with the following values:
10, 100, 990
now you ask rrdtool to plot the data. And ithappens all three
values get mapped to 1 pixel.
If you pick AVERAGE the result will be 100
If you pick MAX it will be 990
If you pick MIN it will be 10
What
ok, I really hate to be a pain but I really want to get this right too
and have spent almost 2 solid days trying to understand this and am
still puzzled! I think rrd is pretty cool but if it's not the right
tool to be using, just tell me. I believe when doing system monitoring
it's absolutely
Hello RRD-Users,
I'm new to rrd and have the following question.
To show the last value of a rrd in a meaningful unit I have to do
some math in rrd-graph.
This works ok for CDEF and plots the right graph.
CDEF:realdist=221,mydist,-,100,*,121,/
LINE2:realdist#00c000:"%"
Now I want to show t
I'd say my problems arose from the fact that I could find any
description on what average, min, max and last do! If they're already
somewhere may all that's needed is a link, but I didn't see anything.
That said, under create manpage under RRA I'd expand the description of
the consolidate fun
Hi Mark,
yes the 'lost' spike confuses people ... most, when they start
thinking about it, see that rrdtool does exactly the right thing,
it uses to consolidation method of the data being graphed to
further consolidate for the graph ...
so ifyou are using MAX as consolidation function for the RRA
Alex van den Bogaerdt wrote:
> On Fri, Jul 20, 2007 at 12:31:25PM -0400, Mark Seger wrote:
>
>> more experiments and I'm getting closer... I think the problem is the
>> AVERAGE in my DEF statements of the graphing command. The only problem
>> is I couldn't find any clear description or exa
On Fri, Jul 20, 2007 at 12:31:25PM -0400, Mark Seger wrote:
> more experiments and I'm getting closer... I think the problem is the
> AVERAGE in my DEF statements of the graphing command. The only problem
> is I couldn't find any clear description or examples of how this works.
> I did try us
more experiments and I'm getting closer... I think the problem is the
AVERAGE in my DEF statements of the graphing command. The only problem
is I couldn't find any clear description or examples of how this works.
I did try using LAST (even though I have no idea what it does) and my
plots got
thanks for the detailed reply and the good news is it more or less
agrees with how I thought this works. in fact, I did find a bug in my
table loading script which caused the table to get created with an
interval of 3 seconds vs 1 and so yes, things got normalized in
unexpected way. once I go
Mark Seger wrote:
>I'm sure it's me and not rrdtool, but I can't figure out what's
>happening! Here's what did:
>- I have a data that has been generated at 1 second intervals
>- generated a plot with gnuplot as a known quantity
>- loaded the same data into rrdtool as absolute values and also with
I'm sure it's me and not rrdtool, but I can't figure out what's
happening! Here's what did:
- I have a data that has been generated at 1 second intervals
- generated a plot with gnuplot as a known quantity
- loaded the same data into rrdtool as absolute values and also with an
interval of 1 sec
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