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Add JVM buffer pool semantic conventions (#2650)

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jack-berg 2022-07-13 12:11:24 -05:00 committed by GitHub
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specification/metrics/semantic_conventions/runtime-environment-metrics.md
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@ -78,7 +78,11 @@ All JVM metric attributes are required unless otherwise indicated.
| process.runtime.jvm.cpu.utilization | Recent cpu utilization for the process [2] | 1 | 1 | Asynchronous Gauge | Double | | | | process.runtime.jvm.cpu.utilization | Recent cpu utilization for the process [2] | 1 | 1 | Asynchronous Gauge | Double | | |
| process.runtime.jvm.system.cpu.utilization | Recent cpu utilization for the whole system [2] | 1 | 1 | Asynchronous Gauge | Double | | | | process.runtime.jvm.system.cpu.utilization | Recent cpu utilization for the whole system [2] | 1 | 1 | Asynchronous Gauge | Double | | |
| process.runtime.jvm.system.cpu.load_1m | Average CPU load of the whole system for the last minute | 1 | 1 | Asynchronous Gauge | Double | | | | process.runtime.jvm.system.cpu.load_1m | Average CPU load of the whole system for the last minute | 1 | 1 | Asynchronous Gauge | Double | | |
| process.runtime.jvm.buffer.usage | Measure of memory used by buffers | Bytes | `By` | UpDownCounter | Int64 | pool | Name of pool[3] |
| process.runtime.jvm.buffer.limit | Measure of total memory capacity of buffers | Bytes | `By` | UpDownCounter | Int64 | pool | Name of pool[3] |
| process.runtime.jvm.buffer.count | Number of buffers in the pool | buffers | `{buffers}` | UpDownCounter | Int64 | pool | Name of pool[3] |
**[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()). **[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()).
Examples include `G1 Old Gen`, `G1 Eden space`, `G1 Survivor Space`, `Metaspace`, etc. Examples include `G1 Old Gen`, `G1 Eden space`, `G1 Survivor Space`, `Metaspace`, etc.
**[2]**: These utilizations are not defined as being for the specific interval since last measurement (unlike `system.cpu.utilization`). **[2]**: These utilizations are not defined as being for the specific interval since last measurement (unlike `system.cpu.utilization`).
**[3]**: Pool names are generally obtained via [BufferPoolMXBean#getName()](https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/BufferPoolMXBean.html#getName()).