Métricas de tiempo de ejecución de Go

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Configuración automática

Para activar la recopilación de métricas de tiempo de ejecución en Go, inicia el rastreador utilizando la opción WithRuntimeMetrics:

tracer.Start(tracer.WithRuntimeMetrics())

Ve las métricas de tiempo de ejecución en correlación con tus servicios de Go en el Catálogo de servicios en Datadog.

Por defecto, las métricas de tiempo de ejecución de tu aplicación se envían cada 10 segundos al Datadog Agent con DogStatsD. Asegúrate de que DogStatsD está activado para el Agent. Si tu dirección DogStatsD del Datadog Agent difiere de la predeterminada localhost:8125, utiliza la opción WithDogstatsdAddress (disponible a partir de 1.18.0) o las variables de entorno DD_AGENT_HOST y DD_DOGSTATSD_PORT.

Si no se utiliza WithDogstatsdAddress, el rastreador intenta determinar la dirección de servicio de statsd de acuerdo con las siguientes reglas:

Busca /var/run/datadog/dsd.socket y utilízalo si está presente. SI NO, continúa con #2.
El host viene determinado por DD_AGENT_HOST y por defecto es “localhost”.
El puerto se obtiene del Agent. Si no está presente, se determina mediante DD_DOGSTATSD_PORT, y por defecto es 8125.

Si estás ejecutando el Agent como contenedor, asegúrate de que DD_DOGSTATSD_NON_LOCAL_TRAFFIC está configurado como true, y de que el puerto 8125 está abierto en el Agent. Además, para Kubernetes o ECS, sigue las directrices que se indican a continuación:

Kubernetes: debes vincular el puerto DogStatsD a un puerto host.
ECS: Establece los indicadores apropiados en la definición de tu tarea.

Alternativamente, el Agent puede ingerir métricas con un Unix Domain Socket (UDS) como alternativa al transporte UDP. Para más información, lee DogStatsD en Unix Domain Socket.

Datos recopilados

Las siguientes métricas se recopilan por defecto después de activar las metricas de Go.

runtime.go.num_cpu (gauge)	CPUs detected by the runtime. Shown as resource
runtime.go.num_goroutine (gauge)	goroutines spawned. Shown as invocation
runtime.go.num_cgo_call (gauge)	CGO calls made. Shown as invocation
runtime.go.mem_stats.alloc (gauge)	Alloc is bytes of allocated heap objects. Shown as byte
runtime.go.mem_stats.total_alloc (gauge)	TotalAlloc is cumulative bytes allocated for heap objects. Shown as byte
runtime.go.mem_stats.sys (gauge)	Sys is the total bytes of memory obtained from the OS. Shown as byte
runtime.go.mem_stats.lookups (gauge)	Lookups is the number of pointer lookups performed by the Shown as unit
runtime.go.mem_stats.mallocs (gauge)	Mallocs is the cumulative count of heap objects allocated. Shown as unit
runtime.go.mem_stats.frees (gauge)	Frees is the cumulative count of heap objects freed. Shown as unit
runtime.go.mem_stats.heap_alloc (gauge)	HeapAlloc is bytes of allocated heap objects. Shown as byte
runtime.go.mem_stats.heap_sys (gauge)	HeapSys is bytes of heap memory obtained from the OS. Shown as byte
runtime.go.mem_stats.heap_idle (gauge)	HeapIdle is bytes in idle (unused) spans. Shown as byte
runtime.go.mem_stats.heap_inuse (gauge)	HeapInuse is bytes in in-use spans. Shown as byte
runtime.go.mem_stats.heap_released (gauge)	HeapReleased is bytes of physical memory returned to the OS. Shown as byte
runtime.go.mem_stats.heap_objects (gauge)	HeapObjects is the number of allocated heap objects. Shown as unit
runtime.go.mem_stats.stack_inuse (gauge)	StackInuse is bytes in stack spans. Shown as byte
runtime.go.mem_stats.stack_sys (gauge)	StackSys is bytes of stack memory obtained from the OS. Shown as byte
runtime.go.mem_stats.m_span_inuse (gauge)	MSpanInuse is bytes of allocated mspan structures. Shown as byte
runtime.go.mem_stats.m_span_sys (gauge)	MSpanSys is bytes of memory obtained from the OS for mspan structures. Shown as byte
runtime.go.mem_stats.m_cache_inuse (gauge)	MCacheInuse is bytes of allocated mcache structures. Shown as byte
runtime.go.mem_stats.m_cache_sys (gauge)	MCacheSys is bytes of memory obtained from the OS for Shown as byte
runtime.go.mem_stats.buck_hash_sys (gauge)	BuckHashSys is bytes of memory in profiling bucket hash tables. Shown as byte
runtime.go.mem_stats.gc_sys (gauge)	GCSys is bytes of memory in garbage collection metadata. Shown as byte
runtime.go.mem_stats.other_sys (gauge)	OtherSys is bytes of memory in miscellaneous off-heap Shown as byte
runtime.go.mem_stats.next_gc (gauge)	NextGC is the target heap size of the next GC cycle. Shown as byte
runtime.go.mem_stats.last_gc (gauge)	LastGC is the time the last garbage collection finished, as nanoseconds since 1970 (the UNIX epoch). Shown as nanosecond
runtime.go.mem_stats.pause_total_ns (gauge)	PauseTotalNs is the cumulative nanoseconds in GC Shown as nanosecond
runtime.go.mem_stats.num_gc (gauge)	NumGC is the number of completed GC cycles. Shown as unit
runtime.go.mem_stats.num_forced_gc (gauge)	NumForcedGC is the number of GC cycles that were forced by the application calling the GC function. Shown as unit
runtime.go.mem_stats.gc_cpu_fraction (gauge)	GCCPUFraction is the fraction of this program's available CPU time used by the GC since the program started. Shown as fraction
runtime.go.gc_stats.pause_quantiles.min (gauge)	Distribution of GC pause times: minimum values Shown as nanosecond
runtime.go.gc_stats.pause_quantiles.25p (gauge)	Distribution of GC pause times: 25th percentile Shown as nanosecond
runtime.go.gc_stats.pause_quantiles.75p (gauge)	Distribution of GC pause times: 50th percentile Shown as nanosecond
runtime.go.gc_stats.pause_quantiles.95p (gauge)	Distribution of GC pause times: 75th percentile Shown as nanosecond
runtime.go.gc_stats.pause_quantiles.max (gauge)	Distribution of GC pause times: maximum values Shown as nanosecond