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[2018.12 Meetup] [TALK #1] Manuel Pais - Limiti...

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December 17, 2018
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[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.

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DevOps Lisbon

December 17, 2018

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Transcript

  1. Limiting WIP with Pastéis de Belém

  2. About me Manuel Pais MS Software Eng @manupaisable manuelpais.net [email protected]

    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