Pull strategy and shortest processing time

Question

question

Ireneusz Kaczmar asked Nov 21 2017 at 9:13 PM tannerp edited Jul 11 2018 at 6:19 PM

Pull strategy and shortest processing time

The model is working in pull strategy, priority is shortest processing time for 5 items. Process time for elements is: (1+1,5+2,5+2+3)/5=20/5=4,0. AvgStaytime in queue should be 4.0, but in this mdel is 4.1s why ??? Someone has any idea ? spt.fsm

Software Version:

FlexSim 17.0.10

pull strategy shortest processing time

spt.fsm (19.2 KiB)

______

Cookie preferences

Your privacy is important to us and so is an optimal experience. To help us customize information and build applications, we collect data about your use of this site.

May we collect and use your data?

Learn more about the Third Party Services we use and our Privacy Statement.

Strictly necessary – required for our site to work and to provide services to you

These cookies allow us to record your preferences or login information, respond to your requests or fulfill items in your shopping cart.

YES

Improve your experience – allows us to show you what is relevant to you

These cookies enable us to provide enhanced functionality and personalization. They may be set by us or by third party providers whose services we use to deliver information and experiences tailored to you. If you do not allow these cookies, some or all of these services may not be available for you.

YES

NO

Customize your advertising – permits us to offer targeted advertising to you

These cookies collect data about you based on your activities and interests in order to show you relevant ads and to track effectiveness. By collecting this data, the ads you see will be more tailored to your interests. If you do not allow these cookies, you will experience less targeted advertising.

YES

NO

Are you sure you want a less customized experience?

We can access your data only if you select "yes" for the categories on the previous screen. This lets us tailor our marketing so that it's more relevant for you. You can change your settings at any time by visiting our privacy statement

Your experience. Your choice.

We care about your privacy. The data we collect helps us understand how you use our products, what information you might be interested in, and what we can improve to make your engagement with Autodesk more rewarding.

May we collect and use your data to tailor your experience?

Explore the benefits of a customized experience by managing your privacy settings for this site or visit our Privacy Statement to learn more about your options.

Answer 1 · 2017-11-22T19:57:46Z

Jeff Nordgren answered Nov 22 2017 at 7:57 PM tannerp edited Jul 11 2018 at 6:19 PM

@Ireneusz Kaczmar

I'm not sure where you are getting your numbers from. Here is how they should be calculated.

Enter Q		Exit Q	Time in Q
1		3	2
1.5		4	2.5
2		5.5	3.5
2.5		8	5.5
3		10	7
Total			20.5
20.5/5 = 4.1

So it appears to me that FlexSim is calculating the Avg. Staytime of flowitems in the queue correctly.

· 1

question