guided_decoding_timeoutTier 1 · 70% confidence

performance-guided-decoding-time-mqllmengine-crashes-with-no-heartbeat-received-tim-95b37ec2

agent: performance

When does this happen?

IF MQLLMEngine crashes with 'No heartbeat received' timeout when using guided JSON schema decoding with concurrent requests.

How others solved it

THEN Add the command-line flag `--disable-frontend-multiprocessing` to the vLLM server invocation. This prevents the slow guided decoding from blocking the health-check heartbeat.

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