Making IT Greener - Pecha Kucha

A Pecha Kucha on sustainability in IT - twenty slides, and slides auto-advance every twenty seconds!

Transcript

1. Holly Cummins
   
   
   Senior Principal Software Engineer, Quarkus
   
   
   @holly_cummins@hachyderm.io
   Making IT
   Greener
   

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2. Uh oh.
   Image: labs.openai.com
   

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3. @holly_cummins #RedHat
   Sources:
   
   
   https://www.greenit.fr/wp-content/uploads/2019/11/GREENIT_EENM_etude_EN_accessible.pdf
   
   
   https://ourworldindata.org/ghg-emissions-by-sector
   The digital world creates
   more carbon emissions
   than aviation.
   Image: labs.openai.com
   

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4. @holly_cummins #RedHat
   We have solutions.
   

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5. Step 1
   
   
   Electricity source
   Photo by Marcos Assis on Unsplash
   

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6. @holly_cummins #RedHat
   

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7. @holly_cummins #RedHat
   Look at the sustainability information
   before choosing a hosting region.
   Choose a cloud provider who make this easy.
   

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8. @holly_cummins #RedHat
   Step 2:
   
   
   The four vowels
   elasticity
   utilisation
   efficiency
   utility
   

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9. Photo by Giovanna Gomes on Unsplash
   Utility: does it make me happy?
   

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10. Utilisation:
    
    
    how much of the
    capacity am I
    using?
    Photo by engin akyurt on Unsplash
    

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11. In many IT systems,
    utilisation is very low
    Image: labs.openai.com
    

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12. Images: labs.openai.com
    Elasticity:
    
    
    if I need less, can
    I scale down?
    

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13. @holly_cummins
    #RedHat
    Elasticity
    We used to
    leave our applications
    running all the time.
    When
    we scripted
    turning them off at
    night, we reduced
    our cloud bill by
    30%.
    @darkandnerdy, Chicago DevOpsDays
    

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14. Efficiency:
    
    
    can I do more
    with the same
    resources?
    Image: labs.openai.com
    

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15. Does the tech stack
    make a difference?
    Image: labs.openai.com
    

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16. Does programming
    language make a
    difference?
    

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18. What about
    framework?
    

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19. @holly_cummins #RedHat
    Setup:
    
    
    • REST + CRUD
    
    
    • large heap
    
    
    • RAPL energy measurement
    
    
    • multiple instances to support high load
    

    Assumptions:
    
    
    • US energy mix
    Source: John O’Hara
    climate impact of framework choice
    

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20. @holly_cummins #RedHat
    “No-regrets” solutions
    

    

    Climate solutions can make everything better.
    

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21. @holly_cummins #RedHat
    The double-win
    Turning things off saves a lot of money
    
    
    Renewable energy is a lot cheaper
    @holly_cummins@hachyderm.io. #RedHat
    Image: labs.openai.com
    

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