How to set the maximum queue capacity to unlimited

[mc_bunji]

[ FlexSim 23.1.3 ]

Hey, Flexsim Gurus!

How can I set the maximum queue capacity to unlimited?

[joerg_vogel_HsH]

@MC Bunji , please don’t do that, because you would include a source of model failure by default. You could set for example a vast high capacity of all created items of a simulation run instead.

[julie_weller]

Hey @MC Bunji! What's your ultimate goal with setting it to be unlimited?

[mc_bunji]

I will have to use the experimenter function to find the throughput under 10 replications, which will be the sum of the items on the queues.

[moehlmann_fe · Accepted solution]

There are better ways to measure throughput than to keep every item in a queue.

You can let the items flow into a sink and use the sink's input/output stat to measure the throughput. You can pin it to a dashboard and if needed, you can sample that table/chart to copy the value into a performance measure.

measure-throughput-fm.fsm

And even if you want to use the queue and keep the items. Just use a very large value as the capacity as Jörg suggested. I'd wager your PC is going to run out of RAM long before the model reaches something close to 1 billion items.

[jason_lightfootVL7B4]

Also, it sounds like you should not be modelling each item and its events but groups of items - boxes or totes etc. If you are conveying the individual items you should be using the Mass Flow Conveyors.

[julie_weller]

Hi @MC Bunji, was Felix Möhlmann's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always comment back to reopen your question.