Add network metrics to process semantic conventions

CHANGELOG.md

@@ -42,6 +42,8 @@ release.
   ([#2522](https://github.com/open-telemetry/opentelemetry-specification/pull/2522))
 - Add semantic conventions for Kafka consumer metrics
   ([#2536](https://github.com/open-telemetry/opentelemetry-specification/pull/2536))
+- Add network metrics to process semantic conventions
+  ([#2556](https://github.com/open-telemetry/opentelemetry-specification/pull/2556))
 
 ### Compatibility
 

specification/metrics/semantic_conventions/process-metrics.md

@@ -34,6 +34,7 @@ Below is a table of Process metric instruments.
 | `process.memory.usage`    | UpDownCounter                                     | By    | The amount of physical memory in use.                                                                                               |                                                                                                                                                                                                 |
 | `process.memory.virtual`  | UpDownCounter                                     | By    | The amount of committed virtual memory.                                                                                             |                                                                                                                                                                                                 |
 | `process.disk.io`         | Counter                                           | By    | Disk bytes transferred.                                                                                                             | `direction` SHOULD be one of: `read`, `write`                                                                                                                                                   |
+| `process.network.io`      | Counter                                           | By    | Network bytes transferred.                                                                                                          | `direction` SHOULD be one of: `in`, `out`                                                                                                                                                 |
 
 ## Attributes