Push-Based KV Transfer in vLLM Cuts Time-to-First-Token ~3x, Boosts TPOT Up to 30%
dl_weekly · x · 2026-10-28
- AWS engineering blog on disaggregated inference in vLLM: moves KV transfer coordination off the critical path with a push-based design.
- Results: 3x faster time-to-first-token (TTFT) and up to 30% better time-per-output-token (TPOT).
- Covers implementation details of KV transfer coordination, directly relevant for teams running prefill/decode disaggregated serving.
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