A little sustainability insight - Royd Brayshay - New Redo

A little sustainability insight - Royd Brayshay - New Redo

Royd Brayshay of New Redo discusses how knowledge of Little’s Law can improve your management decisions.

(This post is part of a collection from the Sustainable Digital Delivery event hosted by Conflux at the Leeds Digital Festival 2019)

Key Points:

  • We don’t use metrics enough to make management decisions

  • Little's Law: Cycle-time = WIP/ Throughput - comes from queuing theory

    • Limiting WIP positively improves cycle time, reducing cycle times (reduce blockages) reduces IP

    • Adding capacity (throughtput) with people or process improvement benefits cycle times

    • Assumptions: Average cycle time = Average WIP / Average Throughput

    • Note: given a stable system

      • consistent units

      • average time = average departure date

      • All work leaves the system done

      • average age of WIP is approximately constant

      • total amount of WIP is approximately constant

  • There is a mathematically provable relationship between the work coming in, and the work leaving.