Listener to add/remove Accumulators

[marlonpatrick]

Is there any listener for add / remove Accumulators currently?

I am wanting to create Producers based on Accumulators. The idea is to generate Min, Max, Avg values ​​for a given Accumulator. For this, I would need to read all the values ​​within an Accumulator and generate such information.

In fact, I think this would be an excellent built-in feature for the Moskito. Something like:

"@accumulators":[
  {
    "name": "SessionCountCur-5m",
    "producerName": "SessionCount",
    "statName": "Sessions",
    "valueName": "cur",
    "intervalName": "5m",
    "registerProducer": true     <<<----------
  }}

Obviously, this could and should be done directly in Producer, however, it is not always simple because you would have to rewrite the code.

Generating from an Accumulator, it would be possible to measure this data for any Stats without needing to rewrite code. In addition, it would be possible to do this within a range determined by the user (accumulationAmount).

[dvayanu]

Hi Marlon,
do I understand you correctly that you want to register a new producer that corresponds to an accumulator? And then what? I mean accumulators have their values from producers, so this new producer will only have the same values the original producer had. Or do I understand it wrong?
There is a producer SessionCount already.
There is an accumulator SessionCountCur-5m.
So if we now add a new producer, SessionCountCur-5m, what values would it hold?
Lets say in 5m intervals we have values of 1000, 1200, 1500, 1200, 900 as SessionCount.Sessions.
So lets say the volatility is 5%.
So the producer values would be:

Time passed	Min	Cur	Max
5m	950	1000	1050
10m	1140	1200	1260
15m	1425	1500	1575
20m	1140	1200	1260
25m	855	900	945

The values in the accumulator will be:

Timestamp	Value
0+5m	1000
0+10m	1200
0+15m	1500
0+20m	1200
0+25m	900

So now the question: What values does the SessionCountCur-5m contain?
Or did I understood you completely wrong? :-)

[marlonpatrick]

Hi, Leon.

Next, I'm going to use Moskito as well to help me measure the size of my environment. For example, how much do I need memory (OS, heap, non-heap), how many users should I support on average? What is my peak of users? Etc. etc.

So I've been trying to generate Min, Max, and Avg values ​​for most metrics. The first way to do this is to create your own Producer and include the missing values, which becomes more laborious.

But if we look closely, the Accumulators have everything we need to generate this information: min, max, avg. They have a list of values ​​of a given Producer / Value, at a given time.

So, taking your example, I would actually like through Accumalor to get the following values:
Min: 900
Max: 1500
Avg: 1160

That way, I would not have to create a new Producer just to extract this data.

Well then at that point if I had some way to intercept the creation / removal of Accumulators I could create a Producer to generate those statistics using Accumulators values.

And maybe, sometime in the future, this option could be out of the box in the Moskito.

Did you understand better? Does it make any sense to you?

[Bezuhlyi]

@marlonpatrick10 Did I get it right that in general, you want to see the result(s) of some function(s) applied to the values on the timeline of a certain Accumulator?

[marlonpatrick]

Sorry for the delay @Bezuhlyi, yes it would be something in that line of thought.

Or you could add this simple information to the Accumulators screen. Currently we have Name, Path, Values ​​(quantity of values) and Last Timestamp. It could be added for quick viewing fields like:

Min / Max / Avg: lowest / highest / average value from current values

Aboslute Min / Max / Avg: lowest / highest / average value among all values ​​including values ​​already discarded

In my case, in possession of this information, I would use such values ​​(Min / Max / Avg) to help me measure the amount of resources needed for my environment.

The best thing is that I could have this set of values ​​for any existing metrics, just create an accumulator that meets my needs.

Today if I need to know how to get Min / Max / Avg for most statistics I will need to write a Producer that contains such data.