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docs: Add per_model_metrics parameter to metrics.md
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Functionality added in #90 

Signed-off-by: Nick Hill <[email protected]>
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@njhill
njhill authored Nov 16, 2023
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12 changes: 7 additions & 5 deletions docs/metrics.md
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Expand Up @@ -11,11 +11,13 @@ The `MM_METRICS` env variable can be used to configure or disable how metrics ar

| | Purpose | Applies to | Default |
|:------------:|:---------------------------------------------------------------------------------------------------------------------------------------------------------------:|:--------------------------------------------------:|:----------------------------------:|
| `port` | Port on which to send or serve metrics | statsd (UDP push), prometheus (HTTP/HTTPS serve) | 8126 (statsd), 2112 (prometheus) |
| `fq_names` | Whether to use fully-qualified method names in request metrics | statsd, prometheus | false |
| `legacy` | Whether to publish legacy flavour (non-Sysdig) statsd metrics. Note that the legacy metrics are equivalent but have different names to those in the table below | statsd | false |
| `scheme` | Protocol scheme to use for Prometheus metrics, can be http or https | prometheus | https |
| `port` | Port on which to send or serve metrics | statsd (UDP push), prometheus (HTTP/HTTPS serve) | `8126` (statsd), `2112` (prometheus)|
| `fq_names` | Whether to use fully-qualified method names in request metrics | statsd, prometheus | `false` |
| `legacy` | Whether to publish legacy flavour (non-Sysdig) statsd metrics. Note that the legacy metrics are equivalent but have different names to those in the table below | statsd | `false` |
| `scheme` | Protocol scheme to use for Prometheus metrics, can be `http` or `https` | prometheus | `https` |
|`per_model_metrics`|Whether to include the `modelId` and `vModelId` labels in applicable published metrics|prometheus|`false` (*)|

(*) In versions of model-mesh between Sep 5 2023 and Nov 16 2023, the default value of per_model_metrics was (unintentionally) `true`.

### Capturing Prometheus metrics

Expand Down Expand Up @@ -61,4 +63,4 @@ prometheus.io/scrape: "true"
| modelmesh_instance_capacity_bytes | Gauge | Pod | Effective model capacity of pod excluding unload buffer |
| modelmesh_instance_used_bytes | Gauge | Pod | Amount of capacity currently in use by loaded models |
| modelmesh_instance_used_bps | Gauge | Pod | Amount of capacity used in basis points (100ths of percent) |
| modelmesh_instance_models_total | Gauge | Pod | Number of model copies loaded in pod |
| modelmesh_instance_models_total | Gauge | Pod | Number of model copies loaded in pod |

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