I believe this all has to do with RRDTool, and you'll need to read those
docs to really understand it. Want to have more fun? Try changing the
graph unit from hourly to daily or some such, your values will change...
RRD itself always averages stuff, it's based on the pixels wide of the
graph and the actual data you have saved per the RRD create command...
--
James Pulver
Information Technology Area Supervisor
LEPP Computer Group
Cornell University
kingpin wrote, On 2/9/2009 4:50 AM:
Hi,
I will be deploying Zenoss Core as our network monitoring system soon for
approximately 600 devices. Before I do this I need something cleared up.
Zenoss monitors the interfaces on our Routers and switches, etc. To get some
more detail I have added some extra data points such as errors, discards,
broadcast, etc. to the ethernetCsmacd template. So far so good.
Now here come the questions:
- We do not want to see averages in our graphs (Zenoss default) but always the
peaks. Therefore I have set the Consolidation in the “Graph points� to MAX
instead of the default AVERAGE. Is this enough, is there more info about the
MAX setting ? Is a different setting more appropriate ?
- Some of the numbers in the graphs are not quite clear to me. For example when
I look at the inbound discarded packets on an interface it shows values like
“cur : 0.00 avg: 3.17m max: 7.29m�. Were does the 7.29m as a max
value come from ? It seems rather impossible for the maximum value of discarded
packets on an interface to be 7.29m packets. The SNMP value for Discarded
packets is an integer of type counter. I have tried setting the data point type
to “COUNTER� and “DERIVE� with the same result. I see the same problem
for multicast, unicast, broadcast packets, etc. Same issue for data points of
type GAUGE, such as the number of SSL clients on our Cisco ASA. Cur: 7.78
avg: 3.67 max: 14.55. How can there be currenlty: 7.78 clients ?
Anyone who can shed some light on this, it would be very much appreciated.
-------------------- m2f --------------------
Read this topic online here:
http://forums.zenoss.com/viewtopic.php?p=31077#31077
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