I recently installed PMP 1.1 to monitor an Apache 2 server (cacti), and I’ve got everything running just fine, but I need some help interpreting the graphs.
The ‘Apache CPU Load’ graph shows values on the Y axis with a “m” suffix (100m, 120m, 140m, etc), but I don’t understand what that means. Is that a mean percentage over a period of time? I checked the plugin data source values and it looks like it uses an RRD “GAUGE” data source type with a 300 step, but I have no idea what that really means. The values on the graph don’t seem to correlate to the Apache web-hosted /server-stats values.
The “Apache Requests” value also doesn’t make sense to me… do these values represent average concurrent requests per time period?
The “Apache Scoreboard” is the most descriptive graph, but again some of the values (reading request, closing connection, etc) have “m” suffixes and I’m lost on what that means.
To go a step further, it would be helpful if there was something that made it clear what sort of thresholds a value should / shouldn’t have, in terms of best practices / performance. That way we can leverage other Cacti plugins like “thold” to respond to these PMP graphs if certain conditions are met.
Thanks in advance.