[2018.12 Meetup] [TALK #1] Manuel Pais - Limiting WIP with Pastéis de Belém

One of the 6 Lightning talks of December 2018 DevOps Lisbon MeetUp.

Transcript

1. Limiting WIP with Pastéis de Belém
2. About me Manuel Pais MS Software Eng @manupaisable manuelpais.net me@manuelpais.net DevOps and Delivery Consultant Focused on teams and flow 2 @manupaisable | manuelpais.net
3. Formula #1 3 @manupaisable | manuelpais.net
4. Flow efficiency = “work normally spends 85% of its lifecycle waiting on something” http://leankanban.com/flow-efficiency-a-great-metric-you-probably-arent-using @manupaisable | manuelpais.net 4
5. Flow efficiency = “work spends 85% of its lifecycle waiting on something” http://leankanban.com/flow-efficiency-a-great-metric-you-probably-arent-using @manupaisable | manuelpais.net 5
6. issue is not how long it takes to do something… issue is how long we’re waiting @manupaisable | manuelpais.net 6
7. @manupaisable | manuelpais.net 7
8. Formula #2 8 @manupaisable | manuelpais.net
9. Little’s Law L = λW “work noom/flow-efficiency-a-great-metric-you-probably-arent-using @manupaisable | manuelpais.net 9
10. Little’s Law for Software L = λW “work noom/flow-efficiency-a-great-metric-you-probably-arent-using @manupaisable | manuelpais.net 10
11. Little’s Law for Software L = λW Work In Progress (WIP) = Throughput x Cycle Time noom/flow-efficiency-a-great-metric-you-probably-arent-using @manupaisable | manuelpais.net 11
12. Work In Progress (WIP) = Throughput x Cycle Time @manupaisable | manuelpais.net 12 What happens when we start more work? Work takes longer to finish!
13. Work In Progress (WIP) = Throughput x Cycle Time @manupaisable | manuelpais.net 13 What happens when we start more work? Work takes longer to finish!
14. @manupaisable | manuelpais.net 14
15. @manupaisable | manuelpais.net 15
16. @manupaisable | manuelpais.net 16 But… we can limit WIP ! No approvals to ask for. No people to hire. No tooling to learn. Just do it!
17. @manupaisable | manuelpais.net 17 Don’t try this at home WIP Limit < # team members
18. @manupaisable | manuelpais.net 18
19. @manupaisable | manuelpais.net 19 STOP starting START finishing
20. @manupaisable | manuelpais.net 20 https://twitter.com/johncutlefish/status/1063702339050070016 @johncutlefish Don G. Reinertsen, 2009, ples ‘The Principles of Product Development Flow’ Dominica DeGrandis, 2017, ‘Making Work Visible’ Victoria Morgan-Smith, 2016, LondonCD meetup https://www.youtube.com/watch?v=vfCnjfxSk0M