Richard Evans
2013-04-26 21:45:25 UTC
Richard Evans [http://community.zenoss.org/people/Richard.evans%40schwab.com] created the discussion
"Threshold against a historic high-water mark"
To view the discussion, visit: http://community.zenoss.org/message/72995#72995
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I have a need to set a threshold against a value derived from historic observations.
For example, the 90% of the maximum value for some slow-moving -OTHER- metric over the last 45 days (moving window).
If it were the same metric, then I would think about using Holt-Winters, but in this case, it's a different metric, so I don't think thats an option.
Perhaps I could use getRRDValue with all the right arguments to propery summarizes an aggregation of the right CF for a start = now - (some epoch_seconds), but that would cause that retrieval to happen for every test of the threshold.
More likely I need to run something on a daily basis which does the calculation and stores that somewhere (attribute of the component?) where I can get to it with a here.myAttribute call?
Any suggestions / examples?
TIA!
Richard Evans
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"Threshold against a historic high-water mark"
To view the discussion, visit: http://community.zenoss.org/message/72995#72995
--------------------------------------------------------------
I have a need to set a threshold against a value derived from historic observations.
For example, the 90% of the maximum value for some slow-moving -OTHER- metric over the last 45 days (moving window).
If it were the same metric, then I would think about using Holt-Winters, but in this case, it's a different metric, so I don't think thats an option.
Perhaps I could use getRRDValue with all the right arguments to propery summarizes an aggregation of the right CF for a start = now - (some epoch_seconds), but that would cause that retrieval to happen for every test of the threshold.
More likely I need to run something on a daily basis which does the calculation and stores that somewhere (attribute of the component?) where I can get to it with a here.myAttribute call?
Any suggestions / examples?
TIA!
Richard Evans
--------------------------------------------------------------
Reply to this message by replying to this email -or- go to the discussion on Zenoss Community
[http://community.zenoss.org/message/72995#72995]
Start a new discussion in zenoss-users at Zenoss Community
[http://community.zenoss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2003]