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Add namespace for process metric attributes #3431

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Add namespace for process metric attributes #3431

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4bfeeb3
Add namespace for process metric attributes
trask Apr 21, 2023
7d71cbd
Change log entry
trask Apr 21, 2023
62088b0
cpu.context_switch -> os.context_switch
trask Apr 21, 2023
6aa922c
os.context_switch -> context_switch
trask Apr 21, 2023
975400c
Merge branch 'main' into process-metric-attrs
trask Apr 25, 2023
f2a4769
Add schema transformation
trask Apr 25, 2023
4d04e08
Merge branch 'main' into process-metric-attrs
reyang May 1, 2023
4312df7
Merge remote-tracking branch 'upstream/main' into process-metric-attrs
trask May 8, 2023
1c195d6
Fix
trask May 8, 2023
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9 changes: 9 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -41,6 +41,15 @@ release.
([#3388](https://github.com/open-telemetry/opentelemetry-specification/pull/3388))
- Change http.server.duration and http.client.duration units to seconds
([#3390](https://github.com/open-telemetry/opentelemetry-specification/pull/3390))
- Change http.server.duration and http.client.duration units to seconds
([#3390](https://github.com/open-telemetry/opentelemetry-specification/pull/3390))
- Rename `process.cpu.time` metric attribute `state` to `cpu.state`,
rename `process.cpu.utilization` metric attribute `state` to `cpu.state`,
rename `process.disk.io` metric attribute `direction` to `disk.direction`,
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Not targeting this PR, I'll restate that disk direction is very weird, most operating systems model disks with read/write/control.

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I understand wanting the consistency. I, personally, view disk as "yet another type of network operation", thanks to years of SAN and DFS.

I think we SHOULD get together a semconv group to really look at these at some point, but unfortunately we have a ton of users right now.

Simple renames and namespacing, I think we can afford to do, especially given what this could provide us w/ Log -> Metric or Trace -> Metric generation.

Anything more semantically different, we need to be cautious about.

rename `process.network.io` metric attribute `direction` to `network.direction`,
rename `process.context_switches` metric attribute `type` to `context_switch.type`,
rename `process.paging.faults` metric attribute `type` to `memory.page_fault.type`,
([#3431](https://github.com/open-telemetry/opentelemetry-specification/pull/3431))

### Compatibility

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24 changes: 12 additions & 12 deletions specification/metrics/semantic_conventions/process-metrics.md
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Expand Up @@ -31,18 +31,18 @@ metrics](runtime-environment-metrics.md).

Below is a table of Process metric instruments.

| Name | Instrument Type ([\*](README.md#instrument-types)) | Unit | Description | Labels |
|---------------------------------|----------------------------------------------------|-----------|-------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `process.cpu.time` | Counter | s | Total CPU seconds broken down by different states. | `state`, if specified, SHOULD be one of: `system`, `user`, `wait`. A process SHOULD be characterized _either_ by data points with no `state` labels, _or only_ data points with `state` labels. |
| `process.cpu.utilization` | Gauge | 1 | Difference in process.cpu.time since the last measurement, divided by the elapsed time and number of CPUs available to the process. | `state`, if specified, SHOULD be one of: `system`, `user`, `wait`. A process SHOULD be characterized _either_ by data points with no `state` labels, _or only_ data points with `state` labels. |
| `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: `receive`, `transmit` |
| `process.threads` | UpDownCounter | {thread} | Process threads count. | |
| `process.open_file_descriptors` | UpDownCounter | {count} | Number of file descriptors in use by the process. | |
| `process.context_switches` | Counter | {count} | Number of times the process has been context switched. | `type` SHOULD be one of: `involuntary`, `voluntary` |
| `process.paging.faults` | Counter | {fault} | Number of page faults the process has made. | `type`, if specified, SHOULD be one of: `major` (for major, or hard, page faults), `minor` (for minor, or soft, page faults). |
| Name | Instrument Type ([\*](README.md#instrument-types)) | Unit | Description | Labels |
|---------------------------------|----------------------------------------------------|-----------|-------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `process.cpu.time` | Counter | s | Total CPU seconds broken down by different states. | `cpu.state`, if specified, SHOULD be one of: `system`, `user`, `wait`. A process SHOULD be characterized _either_ by data points with no `cpu.state` labels, _or only_ data points with `state` labels. |
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| `process.cpu.utilization` | Gauge | 1 | Difference in process.cpu.time since the last measurement, divided by the elapsed time and number of CPUs available to the process. | `cpu.state`, if specified, SHOULD be one of: `system`, `user`, `wait`. A process SHOULD be characterized _either_ by data points with no `cpu.state` labels, _or only_ data points with `state` labels. |
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| `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. | `disk.direction` SHOULD be one of: `read`, `write` |
| `process.network.io` | Counter | By | Network bytes transferred. | `network.direction` SHOULD be one of: `receive`, `transmit` |
| `process.threads` | UpDownCounter | {thread} | Process threads count. | |
| `process.open_file_descriptors` | UpDownCounter | {count} | Number of file descriptors in use by the process. | |
| `process.context_switches` | Counter | {count} | Number of times the process has been context switched. | `context_switch.type` SHOULD be one of: `involuntary`, `voluntary` |
| `process.paging.faults` | Counter | {fault} | Number of page faults the process has made. | `memory.page_fault.type`, if specified, SHOULD be one of: `major` (for major, or hard, page faults), `minor` (for minor, or soft, page faults). |

## Attributes

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