By Nader Talai • May 30, 2017

Flow Efficiency

Flow efficiency is a measure of how much of the overall lead time is due to waiting time: Lead Time = Value Work Time + Waiting Time

Flow Efficiency.jpg

How to measure Flow Efficiency

Most kanban systems separate the waiting from the doing and calculating the overall wait time is a matter of summing up all the wait times.

Flow Efficiency = Sum of the Value Work Time / (sum of the Value Work Time + sum of the Wait Time)

Here is an example Kanban visualisation of the value flow the total time in all the wait states: (Waiting for Develop + Waiting for Test + Waiting for Deploy)

The total work time: (In Develop + In Test + Deploy)

Kanban System Lead Time = Total wait time + Total work time

Flow Efficiency = (In Develop + In Test + Deploy)/Kanban system lead time

Example Kanban Board.jpg

 

References

 

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