Metrics Emitted by Phoenix with Prometheus Enabled

Zhuyi X. · 2025-04-29T21:33:41.974Z

what kind of metrics is phoenix emitted after PHOENIX_ENABLE_PROMETHEUS (https://docs.arize.com/phoenix/self-hosting/configuration) is turned on, haven't found any description on the doc page?

Phoenix emits several metrics via Prometheus when PHOENIX_ENABLE_PROMETHEUS is enabled. These include metrics related to request processing time, exceptions, memory and CPU usage, bulk loader operations, rate limiter activity, and JWT store status. Specifically, metrics like starlette_requests_processing_time_seconds_summary, starlette_exceptions_total, memory_usage_bytes, cpu_usage_percent, and others are available for monitoring various aspects of the system's performance and health.Would you like more detail on any specific metric or how to configure Prometheus with Phoenix?Sources: - Prometheus Metrics in Phoenix

💡 Hint: Mention RunLLM in the thread for followups.

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