Hai, Jay Chow.
In my model:
1. I have set the ranking of the items for three different itemtypes. For example, itemtype1 has the ranking from 1-20, itemtype2 has the ranking from 1-25 and itemtype3 also have its own ranking from 1-35. The lowest ranking is meant the ranking no.1 but not the longest waiting.
2. The purpose of the processor queue was used to store the items. Hence, the operator will carry the items from source queue to the processor queue and then send it to the processor.
3. I also have set the down time of the processor. So when the processor was down, the items that placed in the processor queue will send back to the source queue.
4. Every time a processor finishes processing one item and is available to process another item, the processor should choose the item in its own queue with the lowest rank.
The ideal model which I want to create are:
1. The items will send to the processor queue based on the ranking ( start from no 1) and the processor also will process the items with the lowest ranking first ( start from rank no.1).
2. The items with large ranking must hold in the source queue first and wait the items with low ranking send out. Example, if items with ranking no5 arrive at the source queue first, it should wait the items with ranking no4 arrive just can send out (either can send out together with ranking no 4 or after ranking no4, it is depend on the vacancy of the processor queue)
I have attached my model for your convenience. I think the code that I have write out may be still not complete, because it cannot run well in my model. Hope you can take a look. Thank you.
Best Regards;
Yin
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