~/talk

Empowering Azure Storage with RDMA

on YouTube 20m
Talkat NSDI 2023 · 2023-04-17..04-19· [networking]

speakers

name:Wei Bai
links:none on file
name:Shanim Sainul Abdeen
links:none on file
name:Ankit Agrawal
links:none on file
name:Krishan Kumar Attre
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name:Paramvir Bahl
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name:Ameya Bhagat
links:none on file
name:Gowri Bhaskara
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name:Tanya Brokhman
links:none on file
name:Lei Cao
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name:Ahmad Cheema
links:none on file
name:Rebecca Chow
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name:Jeff Cohen
linkedin:codeteacher
name:Mahmoud Elhaddad
links:none on file
name:Vivek Ette
links:none on file
name:Igal Figlin
links:none on file
name:Daniel Firestone
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name:Mathew George
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name:Ilya German
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name:Lakhmeet Ghai
links:none on file
name:Eric Green
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name:Albert Greenberg
links:none on file
name:Manish Gupta
links:none on file
name:Randy Haagens
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name:Matthew Hendel
links:none on file
name:Ridwan Howlader
links:none on file
name:Neetha John
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name:Julia Johnstone
links:none on file
name:Tom Jolly
bluesky:tomjolly.bsky.social
name:Greg Kramer
links:none on file
name:David Kruse
links:none on file
name:Ankit Kumar
links:none on file
name:Erica Lan
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name:Ivan Lee
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name:Avi Levy
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name:Marina Lipshteyn
links:none on file
name:Xin Liu
linkedin:fbxin
name:Chen Liu
links:none on file
name:Guohan Lu
links:none on file
name:Yuemin Lu
links:none on file
name:Xiakun Lu
links:none on file
name:Vadim Makhervaks
links:none on file
name:Ulad Malashanka
links:none on file
name:David A. Maltz
links:none on file
name:Ilias Marinos
links:none on file
name:Rohan Mehta
links:none on file
name:Sharda Murthi
links:none on file
name:Anup Namdhari
links:none on file
name:Aaron Ogus
links:none on file
name:Jitendra Padhye
links:none on file
name:Madhav Pandya
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name:Douglas Phillips
links:none on file
name:Adrian Power
links:none on file
name:Suraj Puri
links:none on file
name:Shachar Raindel
links:none on file
name:Jordan Rhee
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name:Anthony Russo
links:none on file
name:Maneesh Sah
links:none on file
name:Ali Sheriff
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name:Chris Sparacino
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name:Ashutosh Srivastava
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name:Weixiang Sun
links:none on file
name:Nick Swanson
links:none on file
name:Fuhou Tian
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name:Lukasz Tomczyk
links:none on file
name:Vamsi Vadlamuri
links:none on file
name:Alec Wolman
links:none on file
name:Ying Xie
links:none on file
name:Joyce Yom
links:none on file
name:Lihua Yuan
links:none on file
name:Yanzhao Zhang
links:none on file
name:Brian Zill
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resources

video:https://youtu.be/kDJHA7TNtDk
slides:none on file

summary

Azure replaces TCP with RoCEv2-based RDMA at regional scale, moving roughly 70% of traffic to RDMA and handling exabytes per day over 100+ Gbps links up to ~100 km. The deployment adds RDMA e‑stats for fine-grained latency and synchronized NIC/CPU timestamps, an automatic TCP fallback for lossy links, and tuned storage libraries that translate socket APIs to RDMA verbs. Key protocols and fixes include PFC tuning, ECN-based congestion control like DCQCN, extensive testing, and interoperability work across diverse NICs.

AI-written summary · about

chapters (14)

  1. 0:00Introduction to Azure RDMA
  2. 1:32The problem with TCP
  3. 3:13Importance and benefits
  4. 4:22The RDMA solution
  5. 5:57RDMA evolution and RoCE
  6. 7:24Challenges of implementation
  7. 8:41Enabling RoCE at scale
  8. 11:08Congestion and blocking
  9. 12:27Congestion control protocols
  10. 14:29Software and driver support
  11. 16:09Performance monitoring
  12. 17:52Lessons and best practices
  13. 19:14Open research problems
  14. 19:41Conclusion

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