Gahow Wang
445e491123
third_party/vllm/ now tracked in git for direct patch management.
Based on vLLM v0.18.1 release with one patch applied:
vllm/v1/core/sched/scheduler.py:
Replace fatal assert with graceful skip when KV transfer callback
arrives for an already-aborted request during PD disaggregated serving.
Future vLLM modifications should be made directly in third_party/vllm/
and committed normally. The patches/ directory is kept as documentation
of what changed from upstream.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
59 lines
2.1 KiB
Markdown
59 lines
2.1 KiB
Markdown
# Production Metrics
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vLLM exposes a number of metrics that can be used to monitor the health of the
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system. These metrics are exposed via the `/metrics` endpoint on the vLLM
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OpenAI compatible API server.
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You can start the server using Python, or using [Docker](../deployment/docker.md):
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```bash
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vllm serve unsloth/Llama-3.2-1B-Instruct
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```
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Then query the endpoint to get the latest metrics from the server:
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??? console "Output"
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```console
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$ curl http://0.0.0.0:8000/metrics
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# HELP vllm:iteration_tokens_total Histogram of number of tokens per engine_step.
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# TYPE vllm:iteration_tokens_total histogram
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vllm:iteration_tokens_total_sum{model_name="unsloth/Llama-3.2-1B-Instruct"} 0.0
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vllm:iteration_tokens_total_bucket{le="1.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="8.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="16.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="32.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="64.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="128.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="256.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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vllm:iteration_tokens_total_bucket{le="512.0",model_name="unsloth/Llama-3.2-1B-Instruct"} 3.0
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...
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```
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The following metrics are exposed:
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## General Metrics
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--8<-- "docs/generated/metrics/general.inc.md"
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## Speculative Decoding Metrics
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--8<-- "docs/generated/metrics/spec_decode.inc.md"
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## NIXL KV Connector Metrics
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--8<-- "docs/generated/metrics/nixl_connector.inc.md"
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## Model Flops Utilization (MFU) Performance Metrics
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These metrics are available via `--enable-mfu-metrics`:
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--8<-- "docs/generated/metrics/perf.inc.md"
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## Deprecation Policy
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Note: when metrics are deprecated in version `X.Y`, they are hidden in version `X.Y+1`
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but can be re-enabled using the `--show-hidden-metrics-for-version=X.Y` escape hatch,
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and are then removed in version `X.Y+2`.
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