Devoxx UK 2022: Sustainability in Software Engineering - Today and Tomorrow

Transcript

1. Martin Lippert, Spring Tools Lead & Sustainability Ambassador @ VMware
   May 2022
   Sustainability in Software
   Engineering
   Today and Tomorrow
   

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2. Environment
   Social
   Economic
   Sustainability
   

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3. Environment
   Social
   Economic
   Sustainability
   

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4. Climate Change is real
   

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5. Greenhouse gas emissions
   the main problem
   

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6. Where do they come from?
   

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7. Energy
   

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8. What about Software?
   

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9. We need to decarbonize the entire
   world of software engineering
   hardware production
   commute to/from work
   heating / cooling
   datacenter operation (energy)
   energy production
   network data transfer
   business travel
   food at work
   accommodation
   energy consumption
   . . .
   . . .
   . . .
   . . .
   conferences
   virtual meetings / zoom calls
   

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10. Devoxx UK
    

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11. Flight: 282kg
    Hotel (2 nights): 51kg
    Public transport: 5kg
    ~338kg
    Driving a car for one year: 2000kg
    

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12. Back to Software
    

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13. Let’s talk about
    
    
    Data Centers
    

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14. 100%
    
    
    Carbon Neutral
    on 100%
    
    
    Renewable Energy
    The slogans
    On Site Production
    of renewable energy
    

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15. The reality
    
    
    Your workloads do not run on
    renewable energy all the time
    

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16. There is not enough renewable
    energy (yet)
    

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17. There is not enough renewable
    energy (yet)
    Renewable energy production
    varies a lot
    

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18. There is not enough renewable
    energy (yet)
    Renewable energy production
    varies a lot
    Energy consumption
    increases
    

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19. There is still
    a long way to go
    

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20. Just Wait?
    

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21. No !!!
    The transition is not fast enough
    
    
    Energy consumption is increasing
    
    
    Too many other aspects involved
    

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22. What should we do
    instead?
    

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23. Do not run
    your software
    

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24. Eh, what?
    

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25. Zombies
    are a real problem
    Related study: Jonathan Koomey & Jon Taylor: „Zombie/Comatose Server Redux“, http://anthesisgroup.com/zombie-servers-redux/
    

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26. Do not run
    your software - when not used
    

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27. Idle machines
    are a real problem
    

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28. Adopt
    
    
    Scale to Zero
    architectures
    

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29. Fast Startup
    is important
    

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30. Where
    to run the software?
    

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31. Choose the data center
    wisely
    

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32. Research Paper
    
    
    „A Low Carbon Kubernetes
    Scheduler“
    Aled James, Daniel Schien
    

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33. When
    to run the software?
    

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34. Let the data center decide
    when to run your batch jobs
    

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35. Write better software
    that uses less energy
    
    
    that uses less hardware
    

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36. CPU
    Memory
    Network
    

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37. Reserved Resources
    consume energy
    

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38. Really think about your container
    resource requirements
    

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39. In perspective
    2 CPUs, 32GB: ~1930 kgCO2e / year
    
    
    (Dell PowerEdge R560, 32GB, 2 CPUs, x4 300 GB HDD)
    
    
    flight from FRA -> SFO: ~1883 kgCO2e
    (per passenger and flight, economy, 747-8)
    
    
    

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40. Don’t forget
    
    
    Scaling Effects
    

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41. Example:
    
    
    Spring Boot
    Spring Native
    GraalVM
    

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42. Feedback loops
    are super important
    

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43. Carbon Intensity
    of a software will be a differentiating factor
    

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44. Open Standards
    to be able to compare
    

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45. Green Software Foundation
    https://greensoftware.foundation
    

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46. Remember
    
    
    We can have a huge impact
    

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47. Let’s do it !!!
    

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48. Thank You
    for listening
    
    
    Martin Lippert
    
    
    @martinlippert
    

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