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# service

## Internal Telemetry

The following telemetry is emitted by this component.

### otelcol.connector.consumed.items

Number of items passed to the connector.

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| {item} | Sum | Int | true | Development |

### otelcol.connector.produced.items

Number of items emitted from the connector.

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| {item} | Sum | Int | true | Development |

### otelcol.exporter.consumed.items

Number of items passed to the exporter.

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| {item} | Sum | Int | true | Development |

### otelcol_process_cpu_seconds

Total CPU user and system time in seconds

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| s | Sum | Double | true | Alpha |

### otelcol_process_memory_rss

Total physical memory (resident set size)

| Unit | Metric Type | Value Type | Stability |
| ---- | ----------- | ---------- | --------- |
| By | Gauge | Int | Alpha |

### otelcol_process_runtime_heap_alloc_bytes

Bytes of allocated heap objects (see 'go doc runtime.MemStats.HeapAlloc')

| Unit | Metric Type | Value Type | Stability |
| ---- | ----------- | ---------- | --------- |
| By | Gauge | Int | Alpha |

### otelcol_process_runtime_total_alloc_bytes

Cumulative bytes allocated for heap objects (see 'go doc runtime.MemStats.TotalAlloc')

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| By | Sum | Int | true | Alpha |

### otelcol_process_runtime_total_sys_memory_bytes

Total bytes of memory obtained from the OS (see 'go doc runtime.MemStats.Sys')

| Unit | Metric Type | Value Type | Stability |
| ---- | ----------- | ---------- | --------- |
| By | Gauge | Int | Alpha |

### otelcol_process_uptime

Uptime of the process

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| s | Sum | Double | true | Alpha |

### otelcol.processor.consumed.items

Number of items passed to the processor.

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| {item} | Sum | Int | true | Development |

### otelcol.processor.produced.items

Number of items emitted from the processor.

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| {item} | Sum | Int | true | Development |

### otelcol.receiver.produced.items

Number of items emitted from the receiver.

| Unit | Metric Type | Value Type | Monotonic | Stability |
| ---- | ----------- | ---------- | --------- | --------- |
| {item} | Sum | Int | true | Development |

## Feature Gates

This component has the following feature gates:

| Feature Gate | Stage | Description | From Version | To Version | Reference |
| ------------ | ----- | ----------- | ------------ | ---------- | --------- |
| `service.AllowNoPipelines` | alpha | Allow starting the Collector without starting any pipelines. | v0.122.0 | N/A | [Link](https://github.com/open-telemetry/opentelemetry-collector/pull/12613) |
| `service.profilesSupport` | alpha | Controls whether profiles support can be enabled | v0.112.0 | N/A | [Link](https://github.com/open-telemetry/opentelemetry-collector/pull/11477) |
| `telemetry.UseLocalHostAsDefaultMetricsAddress` | beta | Controls whether default Prometheus metrics server use localhost as the default host for their endpoints | v0.111.0 | N/A | [Link](https://github.com/open-telemetry/opentelemetry-collector/pull/11251) |
| `telemetry.newPipelineTelemetry` | alpha | Injects component-identifying scope attributes in internal Collector metrics | v0.123.0 | N/A | [Link](https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/rfcs/component-universal-telemetry.md) |

For more information about feature gates, see the [Feature Gates](https://github.com/open-telemetry/opentelemetry-collector/blob/main/featuregate/README.md) documentation.