Metronome: Bound the Cache, Keep the Beat for Real-Time Interaction Model Serving
Real-time interaction models -- Moshi, MiniCPM-o, Qwen-Omni -- turn serving into a periodic real-time task: on every frame a session ingests streaming audio and must respond by a recurring wall-clock deadline, while its KV cache grows monotonically and stays pinned for the whole conversation. This regime hides a dangerous failure mode. On a real full-duplex stack, sustained load does not degrade serving gracefully: it falls off a cliff, jumping in one step from milliseconds per frame to a stalled engine when accumulated session state exhausts the KV pool. The collapse is metastable -- identical five-minute runs collapse or survive on run-to-run variance -- and silent: latency and deadline...
| Authors | Jiaying Meng, Bojie Li |
|---|---|
| Primary category | cs.SD |
| Published | 2 July 2026 |
| Last updated at source | 2 July 2026 |
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