What is OpenTelemetry eBPF profiler?

Kernel-level sampler for continuous profiles, symbolizes Go stacks via gopclntab — low overhead, container-blind.

Why does Go profile better with eBPF than C++?

.gopclntab embeds func maps post-strip; C++ needs external debug files, often MIA in prod.

Check binary sections (readelf -S), match versions, upload to Pyroscope — fallback to hex if desperate.

Raw hex addresses in profilers? Nightmare fuel for any dev. OpenTelemetry's eBPF profiler fixes that for Go, revealing bottlenecks instantly.

theAIcatchup Apr 07, 2026 4 min read

Go's .gopclntab enables on-target symbolization in eBPF, crushing stripped C++ binaries. 𝕏
OpenTelemetry eBPF profiler delivers sub-1% overhead flame graphs — production viable now. 𝕏
Ditch agents; kernel profiling with Go symbols is the cloud-native future. 𝕏

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#Go symbolization #eBPF profiler

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Originally reported by Grafana Blog