OpenTelemetry profiles signal and the eBPF profiler (otelcol-ebpf-profiler, `profiling` receiver). Use when setting up continuous profiling with OpenTelemetry, deploying the eBPF profiler on Linux hosts, Docker, or Kubernetes (DaemonSet, kind, k3d), building a profiles pipeline, sending OTLP profiles to Pyroscope, Grafana Cloud Profiles, or another backend, getting flame graphs from OTel, enabling off-CPU profiling, or debugging profiler errors about tracefs, PID namespaces, missing pods, or the service.profilesSupport feature gate. Not for SDK tracing or metrics setup.