Create a time plot of idle% for task executer group

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Rahul R asked Sep 26 2022 at 7:34 PM Rahul R commented Sep 30 2022 at 4:16 PM

Create a time plot of idle% for task executer group

I am trying to create a time plot for avg. idle% for task executer group. This will help me identify the times at which my TE group is loaded with work vs idle. Is there an easy way to do this or do I have to use statistics collector to create row every X minutes and calculate average of idle% for each task executer?

Software Version:

FlexSim 22.2.0

task executer states state statistics statisctis collector time plot

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Answer 1 · 2022-09-27T02:16:53Z

Jeanette F answered Sep 27 2022 at 2:16 AM Rahul R commented Sep 30 2022 at 4:16 PM

Hello @Rahul R,

Would a State Gantt chart work for what you are looking for? It Shows when the operators are idle and busy. If this isn't what you are looking for then maybe the base statistics collector of this chart would be helpful to you.

Depending on the work that your Task Executers are doing you may find that a staytime by hour or output by hour is helpful for defining their workload as well.

1664244923012.png (12.6 KiB)

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Rahul R commented · Sep 27 2022 at 5:36 AM

How do I understand what is on the base statistics collector for Gantt chart?

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Felix Möhlmann Rahul R commented · Sep 27 2022 at 7:45 AM

You can access the gantt chart collector by 'installing' the charts components from the "Advanced" tab in its properties. Each row of the collector holds information about between which points in time the respective object was in a certain state.

You could use this table to determine the avg. utilization by summing up the time spend in the "idle" state within a given time window with a calculated table.

You can also, as you mention yourself, create a statistics collector from scratch for this. The attached model contains an example of how this can be done.

A timer event creates a new row for each object inside the group specified in the collector's labels. The timer interval is also defined as a label.

Each row then fills columns the current model time, the object it belongs it belongs to (equal to the row value) and how long that object has spent in the "idle" state in total during the simulation run.

The fourth column then calculates the percentage over the last interval by subtracting the last total idle time from the current idle time and dividing it by the length of the measurement interval.

This information (idle percentage per object) can then be aggregated into an average over the whole group in a calculated table. (Source table is the collector, the only column is a basic aggregate of the "IdleInterval" column, partitioned by the "Time" column)

StateOverTime_Chart.fsm

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1664264542790.png (23.4 KiB)

1664264557435.png (34.8 KiB)

1664264577659.png (58.6 KiB)

1664264672242.png (56.2 KiB)

stateovertime-chart.fsm (699.0 KiB)

Rahul R commented · Sep 30 2022 at 3:52 PM

@Felix Möhlmann This helps. Thank you!

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