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.

Open Source Beat 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 #OpenTelemetry #eBPF profiler #flame graphs

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Originally reported by Grafana Blog