APM metrics sent by the Datadog Agent

Find below the list of out-of-the-box tracing metrics sent by the Datadog Agent when APM is enabled. Import the APM monitoring dashboard in your Datadog account in order to get an out of the box dashboard exploiting most of those metrics.

METRIC NAME	TYPE	DESCRIPTION
datadog.trace_agent.cpu_percent	Gauge	CPU usage (in cores), e.g. 50 (half a core), 200 (two cores), 250 (2.5 cores)
datadog.trace_agent.events.max_eps.current_rate	Gauge	Count of APM Events per second received by the Agent
datadog.trace_agent.events.max_eps.max_rate	Gauge	Same as the Agent config’s max_events_per_second parameter.
datadog.trace_agent.events.max_eps.reached_max	Gauge	Is set to `1` every time max_events_per_second is reached, otherwise it’s `0`.
datadog.trace_agent.events.max_eps.sample_rate	Gauge	Sample rate applied by the Agent to Events it received
datadog.trace_agent.heap_alloc	Gauge	Heap allocations as reported by the Go runtime.
datadog.trace_agent.heartbeat	Gauge	Increment by one every 10 seconds.
datadog.trace_agent.normalizer.spans_malformed	Count	Number of spans having malformed fields that had to be altered in order for the system to accept them
datadog.trace_agent.obfuscations	Count	Increment by one every time an SQL obfuscation happens.
datadog.trace_agent.panic	Gauge	Increment by one on every code panic.
datadog.trace_agent.ratelimit	Gauge	If lower than `1`, it means payloads are being refused due to high resource usage (cpu or memory).
datadog.trace_agent.receiver.error	Count	Number of times that the API rejected a payload due to an error in either decoding, formatting or other.
datadog.trace_agent.receiver.events_extracted	Count	Total APM events sampled.
datadog.trace_agent.receiver.events_sampled	Count	Total APM events sampled by the `max_events_per_second parameter sampler.
datadog.trace_agent.receiver.oom_kill	Count	Number of times the Agent killed itself due to excessive memory use (150% of max_memory).
datadog.trace_agent.receiver.out_chan_fill	Gauge	Internal metric. Percentage of fill on the receiver’s output channel.
datadog.trace_agent.receiver.payload_accepted	Count	Number of payloads accepted by the Agent.
datadog.trace_agent.receiver.payload_refused	Count	Number of payloads rejected by the receiver because of the sampling.
datadog.trace_agent.receiver.spans_dropped	Count	Total bytes of payloads dropped by the Agent.
datadog.trace_agent.receiver.spans_filtered	Count	Total bytes of payloads filtered by the Agent
datadog.trace_agent.receiver.spans_received	Count	Total bytes of payloads received by the Agent.
datadog.trace_agent.receiver.tcp_connections	Count	Number of TCP connections coming in to the agent.
datadog.trace_agent.receiver.trace	Count	Number of traces received and accepted.
datadog.trace_agent.receiver.traces_bytes	Count	Total bytes of payloads accepted by the Agent.
datadog.trace_agent.receiver.traces_dropped	Count	Traces dropped due to normalization errors.
datadog.trace_agent.receiver.traces_filtered	Count	Traces filtered by ignored resources (as defined in `datadog.yaml` file).
datadog.trace_agent.receiver.traces_priority	Count	Traces processed by priority sampler that have the priority tag.
datadog.trace_agent.receiver.traces_received	Count	Number of traces received and accepted.
datadog.trace_agent.service_writer.services	Count	Number of services flushed.
datadog.trace_agent.started	Count	Increment by one every time the Agent starts.
datadog.trace_agent.stats_writer.bytes	Count	Number of bytes sent (calculated after Gzip).
datadog.trace_agent.stats_writer.connection_fill	Histogram	Percentage of outgoing connections used.
datadog.trace_agent.stats_writer.dropped	Count	Number of payloads dropped due to non retriable HTTP errors.
datadog.trace_agent.stats_writer.dropped_bytes	Count	Number of bytes dropped due to non retriable HTTP errors.
datadog.trace_agent.stats_writer.encode_ms	Histogram	Time it took to encode a stats payload.
datadog.trace_agent.stats_writer.errors	Count	Errors that could not be retried.
datadog.trace_agent.stats_writer.queue_fill	Histogram	Percentage of queue filled.
datadog.trace_agent.stats_writer.retries	Count	Number of retries on failures to the Datadog API
datadog.trace_agent.stats_writer.splits	Count	Number of times a payload was split into multiple ones.
datadog.trace_agent.stats_writer.stats_buckets	Count	Number of stats buckets flushed.
datadog.trace_agent.trace_writer.bytes	Count	Number of bytes sent (calculated after Gzip).
datadog.trace_agent.trace_writer.bytes_estimated	Count	Number of bytes estimated by Agent internal algorithm.
datadog.trace_agent.trace_writer.bytes_uncompressed	Count	Number of bytes sent (calculated before Gzip).
datadog.trace_agent.trace_writer.compress_ms	Gauge	Number of miliseconds it took to compress an encoded trace payload.
datadog.trace_agent.trace_writer.connection_fill	Histogram	Percentage of outgoing connections used by the trace writer.
datadog.trace_agent.trace_writer.dropped	Count	Number of dropped payloads due to non retriable HTTP errors.
datadog.trace_agent.trace_writer.dropped_bytes	Count	Number of dropped bytes due to non retriable HTTP errors.
datadog.trace_agent.trace_writer.encode_ms	Gauge	Number of miliseconds it took to encode a trace payload.
datadog.trace_agent.trace_writer.errors	Count	Errors that could not be retried.
datadog.trace_agent.trace_writer.events	Count	Number of events processed.
datadog.trace_agent.trace_writer.flush_duration	Gauge	Time it took to flush a payload to the Datadog API.
datadog.trace_agent.trace_writer.payloads	Count	Number of payloads processed.
datadog.trace_agent.trace_writer.payloads	Count	Number of payloads sent.
datadog.trace_agent.trace_writer.queue_fill	Histogram	Percentage of outgoing payload queue fill.
datadog.trace_agent.trace_writer.retries	Count	Number of retries on failures to the Datadog API.
datadog.trace_agent.trace_writer.spans	Count	Number of spans processed.
datadog.trace_agent.trace_writer.traces	Count	Number of traces processed.