Accuracy of graphs

Grabowski

This is really weird I think: If I in Orion monitor the server itself (127.0.0.1) and do a report on that I get 100% availability as I would have expected. But on the graphs it looks quite different (I would have like to attach a picture here but couldn't work out how to do that in this forum ). The graphs show a lot of holes when you drill in to 1-minute granularity. The polling frequency is 60 seconds, so I can understand if some minutes won't have a poll representing them, but I would have expected the holes to be much more evenly distributed. For example, since midnight today, I would say that the graph looks like it is showing on average 15% polls missed, but the thing is that the missed polls does not appear to be evenly spread out over time.

Are the graphs just not designed to drill down under 5-minutes granularity if I poll every 60 seconds?


Lars Grabowski
Global Infrastructure
Chr. Hansen A/S

Network_Guru

See my previous post regarding polling frequency.
60 second polling frequency too frequent in my opinion.
If your server gets loaded down in any way (like running SQL reports or nightly DB maintenance) you WILL miss polls.
You must receive a lot of false node down alerts at this polling frequency.

As far as I know, the graphs are only meant to go down to 5 minute polling granularity.
What time intervals do you see when you click on the Excel icon next to the graph & view the graph in Excel (or Raw Data) format?

-=Cheers=-
NG