~/talk

Million-Agent Ruby: Ractor-Local GC in the Age of AI

Talkat RubyKaigi 2026 · 2026-04-22..04-24· [ruby]
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A Ractor-native agent framework called Ragents runs simulated LLMs on a laptop, claims parallelism gains for CPU-bound tool calls, and shows benchmarks comparing Falcon, Puma, threads, and reactor pools. Messages and contexts are frozen shareable objects with move/copy/share semantics and port ownership to avoid races. Ractor-local GC is still work in progress but promised to cut memory and improve production readiness. A live demo sometimes crashes; code and reproducible benchmarks are on GitHub.

AI-written summary · about

  1. 0:00Introduction and welcome
  2. 1:56Ruby’s concurrency evolution
  3. 4:03Threads fibers and reactors
  4. 8:42Ractor ports and agent workflows
  5. 12:37Sharing data across reactors
  6. 17:44Agent orchestration and isolation
  7. 21:20Million-agent Ruby concept
  8. 23:25Ractor local GC progress
  9. 25:29Live agent demo walkthrough
  10. 28:15Closing and acknowledgments
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