Yet another Multi-Core CPU graphing q.

[adg]

Hi,

Newb alert - please be kind

I've done a bit of search here found a few threads on this topic, but I've either missed it in the detail or my use case is a bit different.

I'm using Cacti to graph a bunch of collectd stats using the external RRD guide (http://docs.cacti.net/manual:087:8_rrdt ... ernal_rrds) which is basically working exactly as I'd like, e.g:

Single CPU utilization graph

CPU_graph_image.png (77.36 KiB) Viewed 759 times

BUT...

Now I've got some Quad-Core boxes - I want to do a similar graph for Quad-Core CPUs, summarizing each metric across all cores.

collectd writes one RRD per metric per CPU (i.e. 28 RRDs), so I'm guessing that I need to draw an invisible line for each metric, then do a stacked element that takes the averages and divides by four.

Is this possible or have I got it completely wrong?

[noname]

What about using Aggregate plugin? (Please see PDF manual for details)

See also: http://forums.cacti.net/viewtopic.php?f=21&t=37148

[adg]

Thanks for that - I haven't discovered the world of cacti plugins yet.

Time for a play!