I am trying to ascertain if NPM does any actual baseline calculations. the help file suggests something but I dont think this is a metric baseline function that you could run alerts from.
Basically NPM need to be able to generate a 'baseline' of various stats (user defined would be better).. This would then allow a user to run a report against the baseline and it show a positive/negative correlation to the considered 'normal' for say that interface usage or traffic amount.
Once a baseline is stored this could then be the variable that advanced alerts used instead of hardcoded "utilization > 50%" filters that are not flexible. I would see baselines for Interface stats BPS and Utilization, but could be errors/ discards etc anyting that you need to report /alert on that is dependant on a relative variable.
I have worked with many other performance monitoring systems for SQL and Oracle and both of these allow you to define either auto and manual baseline functions or a combination of the two.
The general options would be.
Configure a baseline:
- per node, per group of nodes, type of nodes, speed of interfaces etc
- Automatic or Custom
Automatic
This a moving window that updates your alert baseline on the last 7 days of collected data.
Custom
This is a specific time range that will not change.
- Custom - Allows you to hardcode a specific time frame/ date range that you know to be a realistic baseline for all /single node.
- How to calculate your baseline (Regardles of Automatic/ Custom options) - allows you to set the days/time of week you would like your baseline to be calculated on.
Allow you to select Mon /Tues/ Weds/ Thurs/ Fri/ Sat/ sun
Allow you to select Start Time / End Time
...anyone else or is this just me????
