Migration Guide 3.25

Table of Contents

• OpenTelemetry metrics

Note	We highly recommend the use of quarkus update to update to a new version of Quarkus. Items marked below with ⚙️ ✅ are automatically handled by quarkus update.

OpenTelemetry metrics

When OpenTelemetry metric is active, Quarkus produces HTTP server and JVM related metrics.

Metric jvm.system.cpu.utilization was removed when in JVM mode and jvm.cpu.recent_utilization should be used instead.

These are the now available metrics when using OpenTelemetry Metrics:

Metric Name	Description	Type	Available on JVM?	Available on Native?	MP 2.0?
http.server.request.duration	Duration of HTTP server requests	HISTOGRAM	Y	Y	Y
jvm.memory.committed	Measure of memory committed	LONG_SUM	Y	No data produced	Y
jvm.memory.used	Measure of memory used	LONG_SUM	Y	No data produced	Y
jvm.memory.limit	Measure of max obtainable memory	LONG_SUM	Y	Not present	Y
jvm.memory.used_after_last_gc	Measure of memory used, as measured after the most recent garbage collection event on this pool.	LONG_SUM	Y	No data produced	Y
jvm.gc.duration	Duration of JVM garbage collection actions	HISTOGRAM	Y	Not present	Y
jvm.class.count	Number of classes currently loaded.	LONG_SUM	Y	No data produced	Y
jvm.class.loaded	Number of classes loaded since JVM start.	LONG_SUM	Y	No data produced	Y
jvm.class.unloaded	Number of classes unloaded since JVM start.	LONG_SUM	Y	No data produced	Y
jvm.cpu.count	Number of processors available to the Java virtual machine.	LONG_SUM	Y	Y	N
jvm.cpu.limit		LONG_SUM	Y	No data produced	N
jvm.cpu.time	CPU time used by the process as reported by the JVM.	DOUBLE_SUM	Y	Not present	N
jvm.system.cpu.utilization	CPU time used by the process as reported by the JVM.	DOUBLE_SUM	Not present	No data produced	N
jvm.cpu.recent_utilization	Recent CPU utilization for the process as reported by the JVM.	DOUBLE_GAUGE	Y	No data produced	N
jvm.cpu.longlock	Long lock times	HISTOGRAM	Y	Y	N
jvm.cpu.context_switch		DOUBLE_SUM	Y	No data produced	N
jvm.network.io	Network read/write bytes.	HISTOGRAM	Y	Not present	N
jvm.network.time	Network read/write duration.	HISTOGRAM	Y	Not present	N
jvm.thread.count	Number of executing platform threads.	LONG_SUM	Y	Y	Y