The amazing CFD, visualizing your workflow; Little’s Law

The Laws and the rules

Little’s law

“The average number of work items in a stable system is equal to their average completion rate, multiplied by their average time in the system.” ~ John Little, 1961

“A Proof for the Queuing Formula” by Little, J. D. C. (1961)

Also, let’s remember the rule of three (wikipedia):

The rule of three is a writing principle that suggests that events or characters 
introduced in threes are more humorous, satisfying, or effective in execution of 
the story and engaging the reader.[1] The reader or audience of this form of text 
is also thereby more likely to remember the information conveyed. This is because 
having three entities combines both brevity and rhythm with having the smallest 
amount of information to create a pattern.[2][3] It makes the author or speaker 
appear knowledgeable while being both simple and catchy.

Studying the CFD, or cumulative flow diagram. It is a great visualization tool for teams managing flow using a Kanban system.

Exercise your agility (v0.2)

  1. What is the throughput on Week 6?
  2. What is the lead time (the average time in process)?
  3. What is the cycle time?

It is important to understand the difference between lead time and cycle time. They are different in that one is customer facing and the other internal to the team. I’m not a fan of reinventing the wheel, so check out this article from Stefan Roock. Work through the presentation below to get your answers.

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Published by Marshall Guillory -

Information Technology professional, transformation leader, agile evangelist & coach, change agent, scrum master, servant leader and more...

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