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[SDK] Tracer::StartSpan benchmark and optimizations#4248

Open

dbarker wants to merge 21 commits into

open-telemetry:mainopen-telemetry/opentelemetry-cpp:mainfrom

dbarker:perf_start_span_optimizationsdbarker/opentelemetry-cpp:perf_start_span_optimizationsCopy head branch name to clipboard

Conversation Commits21 (21)Checks Files changed

Open

[SDK] Tracer::StartSpan benchmark and optimizations#4248
dbarker wants to merge 21 commits into
open-telemetry:mainfrom
dbarker:perf_start_span_optimizations

fix bazel.noexcept build

b208179

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clang-tidy on: pull_request 4

clang-tidy (all-options-abiv1-preview, 216)

clang-tidy (all-options-abiv2-preview, 226)

CMake Install Tests on: pull_request 10

Windows 2022 vcpkg submodule versions cxx17 (static libs - dll)

Windows 2025 vcpkg submodule versions cxx20 (static libs)

Ubuntu 24.04 apt packages cxx17 (static libs - shared libs)

Ubuntu 24.04 latest versions cxx20 (static libs - shared libs)

Ubuntu 22.04 stable versions cxx17 (static libs - shared libs)

Ubuntu 22.04 minimum versions cxx14 (static libs - shared libs)

Ubuntu 24.04 conan stable versions cxx17 (static libs - opentracing shim)

Ubuntu 24.04 conan latest versions cxx17 (static libs - opentracing shim)

macOS 14 conan stable versions cxx17 (static libs)

macOS 14 brew latest versions cxx17 (static libs)

doxygen-tidy on: pull_request

Doxygen lint

CI on: pull_request 1

CMake test (prometheus, elasticsearch, zipkin)

CMake API only test

CMake FetchContent usage with opentelemetry-cpp

CMake gcc 14 (maintainer mode, sync)

CMake gcc 14 (maintainer mode, async)

CMake gcc 14 (maintainer mode, abiv2)

CMake clang 18 (maintainer mode, sync)

CMake clang 18 with C++14 (maintainer mode, async)

CMake clang 18 (maintainer mode, yaml config)

CMake clang 18 (maintainer mode, async)

CMake clang 18 (maintainer mode, abiv2)

CMake msvc (maintainer mode)

CMake msvc (maintainer mode) with C++20

CMake msvc (maintainer mode, abiv2)

CMake test (without otlp-exporter and with async export)

CMake test (with opentracing-shim)

CMake C++14 test(GCC)

CMake C++17 test(GCC)

CMake C++20 test(GCC)

CMake C++20 test(Clang with libc++)

CMake C++23 test(GCC)

CMake C++23 test(Clang with libc++)

CMake test (with otlp-exporter)

CMake test (with modern protobuf,grpc and abseil)

CMake do not install test (with otlp-exporter)

CMake test (build shared libraries with otlp-exporter and static gRPC)

Plugin -> CMake

Bazel

Bazel with async export

Bazel valgrind

Bazel noexcept

Bazel nortti

Bazel asan config

Bazel ubsan config

Bazel tsan config

Bazel on MacOS

Benchmark

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Copyright

CMake -> exporter proto

CMake -> exporter proto (Build as DLL)

CMake (With async export) -> exporter proto

Bazel Windows

Plugin -> CMake Windows

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W3C Distributed Tracing Validation V1

W3C Distributed Tracing Validation V2

cppcheck on: pull_request 1

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include-what-you-use on: pull_request 3

iwyu (all-options-abiv1, 0)

iwyu (all-options-abiv1-preview, 0)

iwyu (all-options-abiv2-preview, 0)

CodeQL on: pull_request 1

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2 warnings

Complete job

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Check Warning Limits

clang-tidy reported 211 warning(s) within the limit of 226

clang-tidy (all-options-abiv2-preview, 226)

succeeded Jul 18, 2026 in 53m 5s

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