# JMX Metrics

<!-- llms-txt-link: /llms.txt -->

> OpenTelemetry Java agent instrumentation

Collects and reports metrics exposed through Java Management Extensions (JMX). It can be configured to extract JVM and application-level telemetry data from JMX MBeans such as memory usage, thread counts, and garbage collection statistics, and translate these measurements into OpenTelemetry metrics.

- **Name**: `jmx-metrics`
- **Scope**: `io.opentelemetry.jmx-metrics`

## Configuration

| Option | Type | Default | Description |
| --- | --- | --- | --- |
| `otel.jmx.config` | list |  | List of paths to JMX metric definition YAML files. |
| `otel.jmx.discovery.delay` | int | 60000 | Time in milliseconds between JMX MBean detection attempts. |
| `otel.jmx.enabled` | boolean | true | Enables collection of JMX metrics. |
| `otel.jmx.target.system` | list |  | List of predefined JMX target systems to collect metrics for. |

## Data

- **JSON**: [/data/javaagent/instrumentations/jmx-metrics/jmx-metrics-d83defbb7555.json](/data/javaagent/instrumentations/jmx-metrics/jmx-metrics-d83defbb7555.json)
- **Explore**: [/java-agent/instrumentation/jmx-metrics](/java-agent/instrumentation/jmx-metrics)