Aggregate issues?

dingy · Post by **dingy** » Mon Nov 12, 2007 4:06 pm

I have used aggregate to graph the farme-relay subinterfaces on one of my routers.
There are seven subinterfaces. Aggregate correctly created the graph entry;
the only things I changed were the title and some of the colors. I verified that the data
sources and the CDEFs used are correct.

The data comes from separate graphs of each subinterface. The data is
in an "over-under" representation, with the negative (outbound) data
calculated by a modified Make Bytes to Bit CDEF (I just multiply by negative eight).
I have checked all the graphs and they are correctly graphing the data.

Is there something else I should look at, or just delete the graph and start over?

BTW - I am running v0.8.7 with patches.

I have absolutley no idea what happened here (see attached).
I have also attached a copy of the graph debug.
Thanks!

Post by **gandalf** » Mon Nov 12, 2007 4:23 pm

Did you select to make an AREA/STACK graph? All items are AREAs, so they are overlapping.
Reinhard

dingy · Post by **dingy** » Mon Nov 12, 2007 4:32 pm

Yes, I selected Area/Stack graph.

the first entry (both in and out) showed as area, everything else was stack.

Howie · Post by **Howie** » Mon Nov 12, 2007 4:37 pm

I don't know if it's actually a requirement, but I usually do those as TWO AREA+STACK sets, one for the negative and one for the positive. It does mean moving all the negative ones to be after the positive ones, and changing the first one to an AREA.

dingy · Post by **dingy** » Mon Nov 12, 2007 4:43 pm

Thanks. Something I was wondering about - especially with the column that was inverted.

Are there any constraints with rrd in regards to this, or is this more like a "best practice"?

dingy · Post by **dingy** » Mon Nov 12, 2007 4:56 pm

Howie - I rearranged the graph per your suggetion and it works great. I wouldn't have thought of doing it that way, but is makes sense in sort of an RPL way!

Thanks!

Howie · Post by **Howie** » Mon Nov 12, 2007 4:57 pm

My reading of http://oss.oetiker.ch/rrdtool/doc/rrdgr ... html#graph is that it is required.

So you have AREA, STACK, STACK, STACK etc (for positive values) followed by AREA, STACK STACK STACK (for negative values), otherwise you are stacking a negative on a positive and strange things will happen, as you have seen.

dingy · Post by **dingy** » Mon Nov 12, 2007 5:09 pm

Wow. Then I must have been lucky with all the other rrd queries that I did (other packages, etc...) that just worked!

Cacti

Aggregate issues?

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