THOLD Baseline config

[lizwire]

hi there,

Hi there,

Can someone explain on how to configure Baseline monitoring using THOLD?
And also the fields of the baseline settings

Threshold Type
The type of Threshold that will be monitored.High / Low Values Baseline Time Based  --this is Baseline

Baseline Settings
Baseline monitoring
When enabled, baseline monitoring checks the current data source value against a value in the past. The available range of values is retrieved and a minimum and maximum values are taken as a respective baseline reference. The precedence however is on the "hard" thresholds above. Baseline monitoring
Reference in the past
Specifies the relative point in the past that will be used as a reference. The value represents seconds, so for a day you would specify 86400, for a week 604800, etc. - does it mean that it only look for the specific day that was specified?
Say specified 1 week- is it looking for the data from this time a week ago?
Time range
Specifies the time range of values in seconds to be taken from the reference in the past— isnt this the same as the above?
Baseline deviation UP
Specifies allowed deviation in percentage for the upper bound threshold. If not set, upper bound threshold will not be checked at all.- if I only want to be alerted if the load reached100% will I put100 here?
Baseline deviation DOWN
Specifies allowed deviation in percentage for the lower bound threshold. If not set, lower bound threshold will not be checked at all.-- im leaving this blank but when you hit save, its defaulting to 0- and its giving me alerts when the percentage goes down a little over 1%
Baseline Trigger Count
Number of consecutive times the data source must be in breach of the baseline threshold for an alert to be raised.


is there a good thold documentation? I cant seem to find anything substantial.

[noname]

I understand baseline monitoring like this(*).
Is it correct?
(*) Sorry, the figure first I posted was definitely wrong.

baseline_abstracts(revised).png (38.46 KiB) Viewed 11037 times

[cspenpen]

Cool Picture!!

For example:
Now is 4/27 6:00, you set "Reference in the past" is 86400(24H) and "Time range" is 10800(3H)
so "Reference in the past" is 4/26 6:00
"Time range" is 4/26 3:00~6:00
The maximum and minimum value are in the "Time range"

If max value is 50 ,min value is 10 and set "Baseline deviation UP" = 100, "Baseline deviation DOWN" = 50
The trigger UP value is 50 + (50*(100/100)) = 100
The trigger DOWN value is 10 - (10*(50*/100) )= 5

If current value is greater than trigger UP value and exceed trigger count, then thold will send alert, and vice versa.

[noname]

Since thold-0.4.4-??? (not sure), it seems baseline monitoring was changed its behavior.
As far as I read source, like this:

baseline_abstracts_044.png (50.19 KiB) Viewed 10523 times

(If I have misunderstanding, please point out..)

Baseline settings: (e.g. thold-0.4.4-41)


New baseline threshold works based on RRA resolution "in the past" which is associated in the given datasource.
("30 Minutes", "2 Hours" and "1 Day" is corresponded to each RRA -- "Weekly", "Monthly" and "Yearly")
If you modified RRA settings, probably the above choices are also changed.

"Time range" won't be used.
"Time reference in the past" is not referenced the exact times (e.g. 30 minutes) before. It is adjusted to fits the boundaries of given time from midnight (0:00).

With this change, number of step for calculating values to compare are reduced drastically. (Thanks sodium for detailed explanation)
(But personally, I like the former(0.4.3) style..)

// Sorry my English

EDIT: replaced screenshot & some descriptions

[TheWitness]

In 0.4.6 the GUI will change just a little bit to articulate how this works. Plus it will actually report the deviation values in the GUI.

TheWitness

[relik]

So is the deviation % now determined from the AVG value, and not MIN or MAX in a given time period?