vLLM-Omni Streaming Architecture Delivers First Audio Chunk in ~47ms via Shared-Memory Ring Buffer
vllm_project · x · 2026-10-07
johnrobinsn breaks down why vLLM-Omni achieves low speech latency: the gap is the inference path, not the model.
- Default transformers.generate(): generate all codec codes, decode once, return — audio only after the last code lands.
- vLLM-Omni: the Talker streams codec codes into a shared-memory ring buffer, Code2Wav consumes in chunks, and PCM goes to the client as fast as it decodes.
Result: first audio chunk in 47ms wall-clock, no waiting for the full sequence.
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