diff --git a/specification/metrics/semantic_conventions/README.md b/specification/metrics/semantic_conventions/README.md
index d3532815d42..5dd397161e5 100644
--- a/specification/metrics/semantic_conventions/README.md
+++ b/specification/metrics/semantic_conventions/README.md
@@ -13,6 +13,7 @@
- [General Metric Semantic Conventions](#general-metric-semantic-conventions)
* [Instrument Naming](#instrument-naming)
* [Instrument Units](#instrument-units)
+ * [Instrument Types](#instrument-types)
@@ -165,3 +166,11 @@ total) are dimensionless and SHOULD use the default unit `1` (the unity).
[annotations](https://ucum.org/ucum.html#para-curly) with curly braces to
give additional meaning *without* the leading default unit (`1`). For example,
use `{packets}`, `{errors}`, `{faults}`, etc.
+
+### Instrument Types
+
+The semantic metric conventions specification always uses the name of the synchronous instrument types,
+like `Counter` or `UpDownCounter`. However, compliant implementations MAY use the asynchronous equivalent instead,
+like `Asynchronous Counter` or `Asynchronous UpDownCounter`.
+Whether implementations choose the synchronous type or the asynchronous equivalent is considered to be an
+implementation detail. Both choices are compliant with this specification.
\ No newline at end of file
diff --git a/specification/metrics/semantic_conventions/faas-metrics.md b/specification/metrics/semantic_conventions/faas-metrics.md
index a3adc9a73d9..45d2bdc6225 100644
--- a/specification/metrics/semantic_conventions/faas-metrics.md
+++ b/specification/metrics/semantic_conventions/faas-metrics.md
@@ -32,22 +32,22 @@ type and units.
Below is a table of FaaS invocation metric instruments.
-| Name | Instrument | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
-|------------------------|------------|--------------|-------------------------------------------|------------------------------------------------------------------------------|
-| `faas.invoke_duration` | Histogram | milliseconds | `ms` | Measures the duration of the invocation |
-| `faas.init_duration` | Histogram | milliseconds | `ms` | Measures the duration of the function's initialization, such as a cold start |
-| `faas.coldstarts` | Counter | default unit | `{coldstarts}` | Number of invocation cold starts. |
-| `faas.errors` | Counter | default unit | `{errors}` | Number of invocation errors. |
-| `faas.executions` | Counter | default unit | `{executions}` | Number of successful invocations. |
-| `faas.timeouts` | Counter | default unit | `{timeouts}` | Number of invocation timeouts. |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
+|------------------------|---------------------------------------------------|--------------|-------------------------------------------|------------------------------------------------------------------------------|
+| `faas.invoke_duration` | Histogram | milliseconds | `ms` | Measures the duration of the invocation |
+| `faas.init_duration` | Histogram | milliseconds | `ms` | Measures the duration of the function's initialization, such as a cold start |
+| `faas.coldstarts` | Counter | default unit | `{coldstarts}` | Number of invocation cold starts. |
+| `faas.errors` | Counter | default unit | `{errors}` | Number of invocation errors. |
+| `faas.executions` | Counter | default unit | `{executions}` | Number of successful invocations. |
+| `faas.timeouts` | Counter | default unit | `{timeouts}` | Number of invocation timeouts. |
Optionally, when applicable:
-| Name | Instrument | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
-|------------------|------------|--------------|-------------------------------------------|-------------------------------------------------|
-| `faas.mem_usage` | Histogram | Bytes | `By` | Distribution of max memory usage per invocation |
-| `faas.cpu_usage` | Histogram | milliseconds | `ms` | Distribution of cpu usage per invocation |
-| `faas.net_io` | Histogram | Bytes | `By` | Distribution of net I/O usage per invocation |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
+|------------------|---------------------------------------------------|--------------|-------------------------------------------|-------------------------------------------------|
+| `faas.mem_usage` | Histogram | Bytes | `By` | Distribution of max memory usage per invocation |
+| `faas.cpu_usage` | Histogram | milliseconds | `ms` | Distribution of cpu usage per invocation |
+| `faas.net_io` | Histogram | Bytes | `By` | Distribution of net I/O usage per invocation |
## Attributes
diff --git a/specification/metrics/semantic_conventions/http-metrics.md b/specification/metrics/semantic_conventions/http-metrics.md
index b5166f35199..3a72cb02d00 100644
--- a/specification/metrics/semantic_conventions/http-metrics.md
+++ b/specification/metrics/semantic_conventions/http-metrics.md
@@ -17,18 +17,18 @@ type and units.
Below is a table of HTTP server metric instruments.
-| Name | Instrument | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
-|-------------------------------|---------------|--------------|-------------------------------------------|------------------------------------------------------------------------------|
-| `http.server.duration` | Histogram | milliseconds | `ms` | measures the duration of the inbound HTTP request |
-| `http.server.active_requests` | UpDownCounter | requests | `{requests}` | measures the number of concurrent HTTP requests that are currently in-flight |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
+|-------------------------------|---------------------------------------------------|--------------|-------------------------------------------|------------------------------------------------------------------------------|
+| `http.server.duration` | Histogram | milliseconds | `ms` | measures the duration of the inbound HTTP request |
+| `http.server.active_requests` | UpDownCounter | requests | `{requests}` | measures the number of concurrent HTTP requests that are currently in-flight |
### HTTP Client
Below is a table of HTTP client metric instruments.
-| Name | Instrument | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
-|------------------------|------------|--------------|-------------------------------------------|----------------------------------------------------|
-| `http.client.duration` | Histogram | milliseconds | `ms` | measures the duration of the outbound HTTP request |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Unit | Unit ([UCUM](README.md#instrument-units)) | Description |
+|------------------------|---------------------------------------------------|--------------|-------------------------------------------|----------------------------------------------------|
+| `http.client.duration` | Histogram | milliseconds | `ms` | measures the duration of the outbound HTTP request |
## Attributes
diff --git a/specification/metrics/semantic_conventions/process-metrics.md b/specification/metrics/semantic_conventions/process-metrics.md
index dc8e0d97132..2358c16aca3 100644
--- a/specification/metrics/semantic_conventions/process-metrics.md
+++ b/specification/metrics/semantic_conventions/process-metrics.md
@@ -27,13 +27,13 @@ metrics](runtime-environment-metrics.md).
Below is a table of Process metric instruments.
-| Name | Instrument | Units | 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 | s | 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` |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Units | 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 | s | 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` |
## Attributes
diff --git a/specification/metrics/semantic_conventions/rpc.md b/specification/metrics/semantic_conventions/rpc.md
index 528328f4e18..cd395ca7214 100644
--- a/specification/metrics/semantic_conventions/rpc.md
+++ b/specification/metrics/semantic_conventions/rpc.md
@@ -31,26 +31,26 @@ MUST be of the specified type and units.
Below is a table of RPC server metric instruments.
-| Name | Instrument | Unit | Unit ([UCUM](README.md#instrument-units)) | Description | Status | Streaming |
-|--------------------------------|------------|--------------|-------------------------------------------|-------------------------------------------------------------------------------------------|-------------|--------------------------------------------------------------------------------------------------------------------------|
-| `rpc.server.duration` | Histogram | milliseconds | `ms` | measures duration of inbound RPC | Recommended | N/A. While streaming RPCs may record this metric as start-of-batch to end-of-batch, it's hard to interpret in practice. |
-| `rpc.server.request.size` | Histogram | Bytes | `By` | measures size of RPC request messages (uncompressed) | Optional | Recorded per message in a streaming batch |
-| `rpc.server.response.size` | Histogram | Bytes | `By` | measures size of RPC response messages (uncompressed) | Optional | Recorded per response in a streaming batch |
-| `rpc.server.requests_per_rpc` | Histogram | count | `{count}` | measures the number of messages received per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
-| `rpc.server.responses_per_rpc` | Histogram | count | `{count}` | measures the number of messages sent per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Unit | Unit ([UCUM](README.md#instrument-units)) | Description | Status | Streaming |
+|--------------------------------|---------------------------------------------------|--------------|-------------------------------------------|-------------------------------------------------------------------------------------------|-------------|--------------------------------------------------------------------------------------------------------------------------|
+| `rpc.server.duration` | Histogram | milliseconds | `ms` | measures duration of inbound RPC | Recommended | N/A. While streaming RPCs may record this metric as start-of-batch to end-of-batch, it's hard to interpret in practice. |
+| `rpc.server.request.size` | Histogram | Bytes | `By` | measures size of RPC request messages (uncompressed) | Optional | Recorded per message in a streaming batch |
+| `rpc.server.response.size` | Histogram | Bytes | `By` | measures size of RPC response messages (uncompressed) | Optional | Recorded per response in a streaming batch |
+| `rpc.server.requests_per_rpc` | Histogram | count | `{count}` | measures the number of messages received per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
+| `rpc.server.responses_per_rpc` | Histogram | count | `{count}` | measures the number of messages sent per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
### RPC Client
Below is a table of RPC client metric instruments. These apply to traditional
RPC usage, not streaming RPCs.
-| Name | Instrument | Unit | Unit ([UCUM](README.md#instrument-units)) | Description | Status | Streaming |
-|--------------------------------|------------|--------------|-------------------------------------------|-------------------------------------------------------------------------------------------|-------------|--------------------------------------------------------------------------------------------------------------------------|
-| `rpc.client.duration` | Histogram | milliseconds | `ms` | measures duration of outbound RPC | Recommended | N/A. While streaming RPCs may record this metric as start-of-batch to end-of-batch, it's hard to interpret in practice. |
-| `rpc.client.request.size` | Histogram | Bytes | `By` | measures size of RPC request messages (uncompressed) | Optional | Recorded per message in a streaming batch |
-| `rpc.client.response.size` | Histogram | Bytes | `By` | measures size of RPC response messages (uncompressed) | Optional | Recorded per message in a streaming batch |
-| `rpc.client.requests_per_rpc` | Histogram | count | `{count}` | measures the number of messages received per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
-| `rpc.client.responses_per_rpc` | Histogram | count | `{count}` | measures the number of messages sent per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
+| Name | Instrument Type ([*](README.md#instrument-types)) | Unit | Unit ([UCUM](README.md#instrument-units)) | Description | Status | Streaming |
+|--------------------------------|---------------------------------------------------|--------------|-------------------------------------------|-------------------------------------------------------------------------------------------|-------------|--------------------------------------------------------------------------------------------------------------------------|
+| `rpc.client.duration` | Histogram | milliseconds | `ms` | measures duration of outbound RPC | Recommended | N/A. While streaming RPCs may record this metric as start-of-batch to end-of-batch, it's hard to interpret in practice. |
+| `rpc.client.request.size` | Histogram | Bytes | `By` | measures size of RPC request messages (uncompressed) | Optional | Recorded per message in a streaming batch |
+| `rpc.client.response.size` | Histogram | Bytes | `By` | measures size of RPC response messages (uncompressed) | Optional | Recorded per message in a streaming batch |
+| `rpc.client.requests_per_rpc` | Histogram | count | `{count}` | measures the number of messages received per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
+| `rpc.client.responses_per_rpc` | Histogram | count | `{count}` | measures the number of messages sent per RPC. Should be 1 for all non-streaming RPCs | Optional | Required |
## Attributes
diff --git a/specification/metrics/semantic_conventions/runtime-environment-metrics.md b/specification/metrics/semantic_conventions/runtime-environment-metrics.md
index b3c763ef7cb..f4125337e16 100644
--- a/specification/metrics/semantic_conventions/runtime-environment-metrics.md
+++ b/specification/metrics/semantic_conventions/runtime-environment-metrics.md
@@ -57,16 +57,16 @@ consider, for example pthreads vs green thread implementations.
All JVM metric attributes are required unless otherwise indicated.
-| Name | Description | Unit | Unit ([UCUM](README.md#instrument-units)) | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|--------------------------------------|-------------------------------------|-------|-------------------------------------------|-----------------|------------|---------------|-----------------------|
-| process.runtime.jvm.memory.usage | Measure of memory used | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | | | | pool | Name of pool [1] |
-| process.runtime.jvm.memory.init | Measure of initial memory requested | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | | | | pool | Name of pool [1] |
-| process.runtime.jvm.memory.committed | Measure of memory committed | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | | | | pool | Name of pool [1] |
-| process.runtime.jvm.memory.max | Measure of max obtainable memory | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | | | | pool | Name of pool [1] |
+| Name | Description | Unit | Unit ([UCUM](README.md#instrument-units)) | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|--------------------------------------|-------------------------------------|-------|-------------------------------------------|---------------------------------------------------|------------|---------------|-----------------------|
+| process.runtime.jvm.memory.usage | Measure of memory used | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
+| process.runtime.jvm.memory.init | Measure of initial memory requested | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
+| process.runtime.jvm.memory.committed | Measure of memory committed | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
+| process.runtime.jvm.memory.max | Measure of max obtainable memory | Bytes | `By` | UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
**[1]**: Pool names are generally obtained
via [MemoryPoolMXBean#getName()](https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/MemoryPoolMXBean.html#getName())
diff --git a/specification/metrics/semantic_conventions/system-metrics.md b/specification/metrics/semantic_conventions/system-metrics.md
index b1111431169..9a5b23badc8 100644
--- a/specification/metrics/semantic_conventions/system-metrics.md
+++ b/specification/metrics/semantic_conventions/system-metrics.md
@@ -29,50 +29,50 @@ instruments not explicitly defined in the specification.
**Description:** System level processor metrics.
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key(s) | Attribute Values |
-|------------------------|----------------------------------------------------------------------------------------------------------|-------|-----------------|------------|------------------|-------------------------------------|
-| system.cpu.time | | s | Counter | Double | state | idle, user, system, interrupt, etc. |
-| | | | | | cpu | CPU number [0..n-1] |
-| system.cpu.utilization | Difference in system.cpu.time since the last measurement, divided by the elapsed time and number of CPUs | 1 | Gauge | Double | state | idle, user, system, interrupt, etc. |
-| | | | | | cpu | CPU number (0..n) |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key(s) | Attribute Values |
+|------------------------|----------------------------------------------------------------------------------------------------------|-------|---------------------------------------------------|------------|------------------|-------------------------------------|
+| system.cpu.time | | s | Counter | Double | state | idle, user, system, interrupt, etc. |
+| | | | | | cpu | CPU number [0..n-1] |
+| system.cpu.utilization | Difference in system.cpu.time since the last measurement, divided by the elapsed time and number of CPUs | 1 | Gauge | Double | state | idle, user, system, interrupt, etc. |
+| | | | | | cpu | CPU number (0..n) |
### `system.memory.` - Memory metrics
**Description:** System level memory metrics. This does not include [paging/swap
memory](#systempaging---pagingswap-metrics).
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|---------------------------|-------------|-------|-----------------|------------|---------------|--------------------------|
-| system.memory.usage | | By | UpDownCounter | Int64 | state | used, free, cached, etc. |
-| system.memory.utilization | | 1 | Gauge | Double | state | used, free, cached, etc. |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|---------------------------|-------------|-------|---------------------------------------------------|------------|---------------|--------------------------|
+| system.memory.usage | | By | UpDownCounter | Int64 | state | used, free, cached, etc. |
+| system.memory.utilization | | 1 | Gauge | Double | state | used, free, cached, etc. |
### `system.paging.` - Paging/swap metrics
**Description:** System level paging/swap memory metrics.
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|---------------------------|-------------------------------------|--------------|-----------------|------------|---------------|------------------|
-| system.paging.usage | Unix swap or windows pagefile usage | By | UpDownCounter | Int64 | state | used, free |
-| system.paging.utilization | | 1 | Gauge | Double | state | used, free |
-| system.paging.faults | | {faults} | Counter | Int64 | type | major, minor |
-| system.paging.operations | | {operations} | Counter | Int64 | type | major, minor |
-| | | | | | direction | in, out |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|---------------------------|-------------------------------------|--------------|---------------------------------------------------|------------|---------------|------------------|
+| system.paging.usage | Unix swap or windows pagefile usage | By | UpDownCounter | Int64 | state | used, free |
+| system.paging.utilization | | 1 | Gauge | Double | state | used, free |
+| system.paging.faults | | {faults} | Counter | Int64 | type | major, minor |
+| system.paging.operations | | {operations} | Counter | Int64 | type | major, minor |
+| | | | | | direction | in, out |
### `system.disk.` - Disk controller metrics
**Description:** System level disk performance metrics.
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|--------------------------------------------|-------------------------------------------------|--------------|-----------------|------------|---------------|------------------|
-| system.disk.io | | By | Counter | Int64 | device | (identifier) |
-| | | | | | direction | read, write |
-| system.disk.operations | | {operations} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | read, write |
-| system.disk.io_time\[1\] | Time disk spent activated | s | Counter | Double | device | (identifier) |
-| system.disk.operation_time\[2\] | Sum of the time each operation took to complete | s | Counter | Double | device | (identifier) |
-| | | | | | direction | read, write |
-| system.disk.merged | | {operations} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | read, write |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|--------------------------------------------|-------------------------------------------------|--------------|---------------------------------------------------|------------|---------------|------------------|
+| system.disk.io | | By | Counter | Int64 | device | (identifier) |
+| | | | | | direction | read, write |
+| system.disk.operations | | {operations} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | read, write |
+| system.disk.io_time\[1\] | Time disk spent activated | s | Counter | Double | device | (identifier) |
+| system.disk.operation_time\[2\] | Sum of the time each operation took to complete | s | Counter | Double | device | (identifier) |
+| | | | | | direction | read, write |
+| system.disk.merged | | {operations} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | read, write |
1 The real elapsed time ("wall clock")
used in the I/O path (time from operations running in parallel are not
@@ -97,36 +97,36 @@ perf counter (similar for Writes)
**Description:** System level filesystem metrics.
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|-------------------------------|-------------|-------|-----------------|------------|---------------|----------------------|
-| system.filesystem.usage | | By | UpDownCounter | Int64 | device | (identifier) |
-| | | | | | state | used, free, reserved |
-| | | | | | type | ext4, tmpfs, etc. |
-| | | | | | mode | rw, ro, etc. |
-| | | | | | mountpoint | (path) |
-| system.filesystem.utilization | | 1 | Gauge | Double | device | (identifier) |
-| | | | | | state | used, free, reserved |
-| | | | | | type | ext4, tmpfs, etc. |
-| | | | | | mode | rw, ro, etc. |
-| | | | | | mountpoint | (path) |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|-------------------------------|-------------|-------|---------------------------------------------------|------------|---------------|----------------------|
+| system.filesystem.usage | | By | UpDownCounter | Int64 | device | (identifier) |
+| | | | | | state | used, free, reserved |
+| | | | | | type | ext4, tmpfs, etc. |
+| | | | | | mode | rw, ro, etc. |
+| | | | | | mountain | (path) |
+| system.filesystem.utilization | | 1 | Gauge | Double | device | (identifier) |
+| | | | | | state | used, free, reserved |
+| | | | | | type | ext4, tmpfs, etc. |
+| | | | | | mode | rw, ro, etc. |
+| | | | | | mountpoint | (path) |
### `system.network.` - Network metrics
**Description:** System level network metrics.
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|----------------------------------------|-------------------------------------------------------------------------------|---------------|-----------------|------------|---------------|------------------------------------------------------------------------------------------------|
-| system.network.dropped\[1\] | Count of packets that are dropped or discarded even though there was no error | {packets} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.packets | | {packets} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.errors\[2\] | Count of network errors detected | {errors} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.io | | By | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.connections | | {connections} | UpDownCounter | Int64 | device | (identifier) |
-| | | | | | protocol | tcp, udp, [etc.](https://en.wikipedia.org/wiki/Transport_layer#Protocols) |
-| | | | | | state | [e.g. for tcp](https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Protocol_operation) |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|----------------------------------------|-------------------------------------------------------------------------------|---------------|---------------------------------------------------|------------|---------------|------------------------------------------------------------------------------------------------|
+| system.network.dropped\[1\] | Count of packets that are dropped or discarded even though there was no error | {packets} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.packets | | {packets} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.errors\[2\] | Count of network errors detected | {errors} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.io | | By | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.connections | | {connections} | UpDownCounter | Int64 | device | (identifier) |
+| | | | | | protocol | tcp, udp, [etc.](https://en.wikipedia.org/wiki/Transport_layer#Protocols) |
+| | | | | | state | [e.g. for tcp](https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Protocol_operation) |
1 Measured as:
@@ -151,10 +151,10 @@ from
**Description:** System level aggregate process metrics. For metrics at the
individual process level, see [process metrics](process-metrics.md).
-| Name | Description | Units | Instrument Type | Value Type | Attribute Key | Attribute Values |
-|--------------------------|-----------------------------------------------------------|-------------|-----------------|------------|---------------|------------------------------------------------------------------------------------------------|
-| system.processes.count | Total number of processes in each state | {processes} | UpDownCounter | Int64 | status | running, sleeping, [etc.](https://man7.org/linux/man-pages/man1/ps.1.html#PROCESS_STATE_CODES) |
-| system.processes.created | Total number of processes created over uptime of the host | {processes} | Counter | Int64 | - | - |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|--------------------------|-----------------------------------------------------------|-------------|---------------------------------------------------|------------|---------------|------------------------------------------------------------------------------------------------|
+| system.processes.count | Total number of processes in each state | {processes} | UpDownCounter | Int64 | status | running, sleeping, [etc.](https://man7.org/linux/man-pages/man1/ps.1.html#PROCESS_STATE_CODES) |
+| system.processes.created | Total number of processes created over uptime of the host | {processes} | Counter | Int64 | - | - |
### `system.{os}.` - OS Specific System Metrics