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Chapter 7. Deprecated metrics


The following metrics are deprecated and will be removed in a future version of AI Inference Server:

  • vllm:num_requests_swapped
  • vllm:cpu_cache_usage_perc
  • vllm:cpu_prefix_cache_hit_rate (KV cache offloading is not used in V1).
  • vllm:gpu_prefix_cache_hit_rate. This metric is replaced by queries+hits counters in V1.
  • vllm:time_in_queue_requests. This metric is duplicated by vllm:request_queue_time_seconds.
  • vllm:model_forward_time_milliseconds
  • vllm:model_execute_time_milliseconds. Prefill, decode or inference time metrics should be used instead.
Important

When metrics are deprecated in version X.Y, they are hidden in version X.Y+1 but can be re-enabled by using the --show-hidden-metrics-for-version=X.Y escape hatch. Deprecated metrics are completely removed in the following version X.Y+2.

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