In vLLM v0.23.0, `vllm:request_queue_time_seconds` is emitted on completion from scheduler lifecycle timestamps; repeated `QUEUED` events overwrite `queued_ts` while first `SCHEDULED` is retained.

MetricvLLM v0.23.0confidence: highverified 11 hr agoverified-code

PrometheusStatLoggerV1 metrics

vLLM v0.23.0 v1 metrics stats.py(vllm/v1/metrics/loggers.py:406-455)

definesprimarysource_codecode_introspection

Pinned release-tag semantics; do not carry to another version without continuity evidence.

In vLLM v0.23.0, vllm:request_queue_time_seconds is emitted on completion from scheduler lifecycle timestamps; repeated QUEUED events overwrite queued_ts while first SCHEDULED is retained.