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Tiffany Pecson avatar image
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Tiffany Pecson asked Jordan Johnson answered

Statistics Collector Process Time

I'd like to gather a data table of response time from the time an object enters a processor until the time that the operator starts to process it. I have attached an example of the model and attempted a statistics collector. I am not sure what event would allow me to gather the time for the operator. I'm thinking that for the processors I can use the on-entry time. Being that statistics collector is so new, I'm still navigating my way through it. Eventually I'll scale it up to be multiple operators and multiple processors, but if I can get this data I'm sure it'll be easy to scale up.

Essentially, I'd like the table to spit out the following:

FlexSim 17.2.2
statistics collectorprocess timeresponse time
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Jordan Johnson answered

I made this example model. It has a unique, but powerful, approach. record-response-time-log.fsm

At a high level, here's the idea. You make a token for each item (using Process Flow), and then fill that token with the data you need, and then, using the Statistics Collector, you log off that data, one event at a time.

Here's the lower level explanation. First, I put the processors in a group. This lets me listen to all processors in that group at once. In my Process Flow, I have an Event Triggered Source. So any time an item enters any of the processors in the group, that source will spit out a token. The token adds a label for which item it has, and which processor it's dealing with. Then, the token sets labels for the current time.

Next, the token waits for the processor to change state to Processing. Once that happens, the token caches of the current time, and calculates the response time.

All the Statistics Collector does is log off all the important token label values, making the table you requested.

NOTE: there are some breathe activities in this flow. This is because there are many, many state changes on the processor that happen in zero time. The purpose of these breathes is to skip any changes to Processing that occur before the item begins processing. This may not work in a future version. If it doesn't, try adding another breathe, or even waiting for a tiny amount of time, like 1.0e-6 or something. And if that still doesn't work, ask a new question, and we'll help you out.


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