[emyller]

Closes SDK-20.

Set up CodSpeed in GitHub Actions.

🤖 Generated with Claude Code

[linear-code]

SDK-20

[coderabbitai]

Walkthrough

The pull request adds a CodSpeed benchmark harness, an Erlang NIF for instrumentation hooks, and SDK benchmark operations for three environment sizes. It adds Makefile targets to build and run the benchmarks, submodule references for benchmark assets, and a workflow that runs benchmarks on pushes to main, pull requests, and manual dispatches. The formatter input now includes .exs files under bench.

Priority: Low

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: Low · up to c2ab4

This adds CodSpeed benchmarking and does not change SDK runtime behaviour. The benchmark runner can report timings for an unexpected lookup result without failing, which could mislead performance tracking. Add result assertions to the benchmark callbacks and remove the tag from the submodule's branch setting; neither blocks the merge.

- [ ] Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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[codspeed]

Congrats! CodSpeed is installed 🎉

🆕 12 new benchmarks were detected.

You will start to see performance impacts in the reports once the benchmarks are run from your default branch.

Detected benchmarks

• get_environment_flags[large]: 593.6 µs
• get_environment_flags[medium]: 180 µs
• get_environment_flags[small]: 14.6 µs
• get_identity_flags_no_traits[large]: 3.6 ms
• get_identity_flags_no_traits[medium]: 738.5 µs
• get_identity_flags_no_traits[small]: 76.1 µs
• get_identity_flags_with_identity_overrides[large]: 2.9 ms
• get_identity_flags_with_identity_overrides[medium]: 745.1 µs
• get_identity_flags_with_identity_overrides[small]: 70.7 µs
• get_identity_flags_with_traits[large]: 53.9 ms
• get_identity_flags_with_traits[medium]: 2.5 ms
• get_identity_flags_with_traits[small]: 466.1 µs

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[coderabbitai]

Actionable comments posted: 2

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Review info

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• Layers: Organization UI
• Review profile: ASSERTIVE
• Plan: Advanced
• Run ID: cd65cf67-66c3-4a8c-8c0e-8dbf8fa99ee7

Commits

Reviewing files that changed from the base of the PR and between 77b5e9a and c2ab412.

Files selected for processing: 9

• .formatter.exs
• .github/workflows/codspeed.yml
• .gitmodules
• Makefile
• bench/codspeed.exs
• bench/instrument-hooks
• bench/instrument_hooks_nif.c
• bench/sdk_benchmark.exs
• test/support/sdk-benchmarks

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