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
2. Environment Social Economic Sustainability
3. Environment Social Economic Sustainability
4. Climate Change is real
5. Greenhouse gas emissions the main problem
6. Where do they come from?
7. Energy
8. What about Software?
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
10. Devoxx UK
11. Flight: 282kg Hotel (2 nights): 51kg Public transport: 5kg ~338kg Driving a car for one year: 2000kg
12. Back to Software
13. Let’s talk about Data Centers
14. 100% Carbon Neutral on 100% Renewable Energy The slogans On Site Production of renewable energy
15. The reality Your workloads do not run on renewable energy all the time
16. There is not enough renewable energy (yet)
17. There is not enough renewable energy (yet) Renewable energy production varies a lot
18. There is not enough renewable energy (yet) Renewable energy production varies a lot Energy consumption increases
19. There is still a long way to go
20. Just Wait?
21. No !!! The transition is not fast enough Energy consumption is increasing Too many other aspects involved
22. What should we do instead?
23. Do not run your software
24. Eh, what?
25. Zombies are a real problem Related study: Jonathan Koomey & Jon Taylor: „Zombie/Comatose Server Redux“, http://anthesisgroup.com/zombie-servers-redux/
26. Do not run your software - when not used
27. Idle machines are a real problem
28. Adopt Scale to Zero architectures
29. Fast Startup is important
30. Where to run the software?
31. Choose the data center wisely
32. Research Paper „A Low Carbon Kubernetes Scheduler“ Aled James, Daniel Schien
33. When to run the software?
34. Let the data center decide when to run your batch jobs
35. Write better software that uses less energy that uses less hardware
36. CPU Memory Network
37. Reserved Resources consume energy
38. Really think about your container resource requirements
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)
40. Don’t forget Scaling Effects
41. Example: Spring Boot Spring Native GraalVM
42. Feedback loops are super important
43. Carbon Intensity of a software will be a differentiating factor
44. Open Standards to be able to compare
45. Green Software Foundation https://greensoftware.foundation
46. Remember We can have a huge impact
47. Let’s do it !!!
48. Thank You for listening Martin Lippert @martinlippert