~/talk

Hierarchical Integration of WebAssembly in Serverless for Efficiency and Interoperability

on YouTube 17m
Talkat NSDI '26 · 2026-05-04..05-06· [webassembly, serverless]

speakers

name:Mohammadamin Baqershahi
linkedin:amin-baqershahi
name:Changyuan Lin
links:none on file
name:Visal Saosuo
website:http://vsaosuo.github.io
name:Paul Chen
links:none on file
name:Mohammad Shahrad
bluesky:mshahrad.bsky.social

resources

video:https://youtu.be/87jUDykMtXU
slides:none on file

summary

A hierarchy places many WebAssembly modules inside larger container sandboxes to preserve container semantics while packing tenants for density; implementation called Wasabi integrates with Knative and WasmEdge with under <2k LOC change, runs on a 9-node test cluster (~100 cores, 200 GB RAM), and combines resource-aware scaling, queuing, overbooking, memory preallocation and thread cgrouping. Results show roughly 10x resource reduction (16 containers versus ~1,000 starts) while matching or improving service-time percentiles.

AI-written summary · about

chapters (9)

  1. 0:00Serverless computing challenges
  2. 2:23Why serverless is expensive
  3. 5:54WebAssembly basics
  4. 8:24Balancing Wasabi integration
  5. 11:51Wasabi optimizations
  6. 13:35Implementation and setup
  7. 14:19Resource allocation with Wasabi
  8. 15:21Performance and scaling
  9. 16:22Conclusion and future

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