Bottlenecks are points where limited capacity, delays or constraints restrict the flow of work. Analysing them helps identify where queues form and where improvement will have the greatest effect.
How to use this tool
Define process and performance
Define the process and expected level of performance.
Measure workload and throughput
Measure waiting time, workload and throughput.
Identify the restricting step
Identify the step restricting overall flow.
Rebalance or redesign
Increase capacity, rebalance work or redesign the process.
References & further reading
Goldratt, E. M. and Cox, J. (1984). The Goal: A Process of Ongoing Improvement. North River Press.