VGR_CNCF_K8s_BLR_-_NATC23_-_Final_v3.pptx__3_.pdf

Transcript

1. Writing Greener Java Applications Vinay Rajagopal vinay.g.rajagopal@redhat.co m Principal Technologist Red Hat India & South Asia Sustainable Computing from Code to Containers The new KRA for developers and SREs Disclaimer: “Opinions expressed within the content are solely the author's and do not reflect the opinions and beliefs of CNCF or RED HAT.”
2. 4% => 8% Digital Carbon Footprint: from 4 to 8% Sources: Lancaster University “The climate impact of ICT: A review of estimates, trends and regulations” (December 2020) Microsoft “A new approach for Scope 3 emissions transparency” (2021) Published estimates of ICT current share of global greenhouse gas emissions systematically underestimate the carbon footprint. It now represents about 4% of the greenhouse gas emissions on the planet in 2020 and could reach 8% by 2025 if nothing is changed. Energy efficiencies that have been achieved have historically spurred demand at a pace that exceeds the efficiency savings. Increase in uptake of Blockchain, 5G, IoT and AI technologies will contribute to further increase.
3. Sustainability is part of top 5 CEO priorities
4. Measuring and Optimizing Green IT You can’t manage what you can’t measure: organizations need real time power- and emissions-monitoring capabilities to track impact of their decisions Sources: BCG Gamma, “Use AI to Measure Emissions Exhaustively, Accurately, and Frequently” (October 2021) Emma Chervek, “AWS, Google, Microsoft Measure Cloud Customers' CO2” (SDXCentral, 23 December 2021) of organizations are concerned about reducing their emissions are able to measure their emissions comprehensively 85% 9%
5. What can we do about this?
6. What can we do about this? 3 stages in the sustainability journey: 1. Hybrid-Cloud Infrastructure Measurements 2. Sustainable Software Engineering Practices 3. Application Optimization by Design Sources: McKinsey “The green IT revolution: A blueprint for CIOs to combat climate change” (15 September 2022) Accenture “The Green Behind the Cloud” (22 September 2020)
7. Sustainable Computing Kepler (Kubernetes Efficient Power Level Exporter) Exporter exposes a variety of metrics about the energy consumption of Kubernetes components such as Pods and Nodes. https://github.com/sustainable-computing-io/kepler
8. Sustainable Computing Quarkus - fast boot time, low memory, near instant scale up and high density memory utilization in container orchestration platforms like Kubernetes. https://github.com/quarkusio/quarkus & https://quarkus.io/
9. how does quarkus help reduce carbon? energy usage lower memory usage higher throughput for same resources elasticity machine selectio n (provisioning) scaling workloads down (ideally to 0) serverless a good example (but not the only one) running the same workload on a smaller machine saves energy saves embodied carbon
10. so does Quarkus reduce carbon emissions? Quarkus saves time money carbon (~2x*) *Tests and benchmarks can vary
11. but what about native? to optimize carbon use case for native low workload (so throughput isn’t the bottleneck) resource-constrained or old hardware (especially memory) high re-deploy rate (applications never get warmed up before being spun down) serverless (of course) use case for JVM high workload (you need lots of throughput) long-lived processes (the rapid start of native doesn’t save you much over the lifetime) stable workload or very little elasticity in underlying orchestration
12. native vs JVM is not an either-or • consider hybrid deployment models • a strength of Quarkus is application code is the same for native and JVM
13. Sustainable Computing Kruize - Right Size and Optimize your Containers ! https://github.com/kruize/kruize • Monitor application containers for resource usage • Analyse/Predict the right size for the containers • Offer recommendations on the right CPU and Memory request and limit values.
14. yes, those are the same optimising cost application performance will also be optimising carbon
15. Sustainable Computing Getting Started… https://developers.redhat.com/developer-sandbox
16. Reducing energy consumption can make everything better we all have a part to play
17. Writing Greener Java Applications Vinay Rajagopal vinay.g.rajagopal@redhat.co m Principal Technologist Red Hat India & South Asia Sustainable Computing from Code to Containers The new KRA for developers and SREs Disclaimer: “Opinions expressed within the content are solely the author's and do not reflect the opinions and beliefs of CNCF or RED HAT.”