TEST-INFRA: [ci-execution-time] Analyze and optimize individual test performance #2254

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opened 2026-04-03 11:21:47 +00:00 by freemo · 1 comment

freemo commented

2026-04-03 11:21:47 +00:00

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Metadata

Branch: task/ci-individual-test-performance-analysis
Commit Message: perf(ci): analyze and optimize individual test execution performance
Milestone: v3.8.0
Parent Epic: #1678

Background and Context

While the overall CI test execution is parallelized (addressed in Epic #1678), individual tests within the suite may themselves be slow and represent optimization opportunities. A more in-depth analysis of individual test performance is needed to identify and optimize these slow-running tests. This complements the broader CI execution time optimization effort by targeting test-level inefficiencies rather than pipeline-level structural gaps.

Expected Behavior

The test suite should have no individual tests that are disproportionately slow. Slow tests should be identified, their root causes understood, and where possible, refactored to run faster without reducing coverage.

Acceptance Criteria

A profiling report of the test suite is produced, listing the slowest-running tests by execution time.
Root causes of the identified slow tests are documented.
At least one slow test is refactored and its execution time is measurably reduced.
All optimizations and findings are documented in the project documentation.

Supporting Information

Parent Epic: #1678 — CI Execution Time Optimization — Timeouts, Concurrency, and Coverage Artifact Sharing
Related to overall CI wall-clock time reduction efforts.
Use nox -s benchmark for performance benchmarking; nox -s unit_tests for test suite profiling.

Subtasks

Profile the test suite using appropriate tooling (e.g., pytest --durations=20 via nox) to identify the slowest-running tests
Analyze the identified slow tests to find the root cause of the performance issue (e.g., excessive I/O, missing mocks, redundant setup)
Refactor at least one slow test to improve its performance without reducing coverage
Update or add BDD scenarios in features/ to cover any refactored test behavior
Document the profiling findings and optimizations made
Verify coverage >= 97% via nox -s coverage_report
Run nox (all default sessions) and fix any errors

Definition of Done

This issue is complete when:

All subtasks above are completed and checked off.
A profiling report exists documenting the slowest tests and their root causes.
At least one slow test has been optimized with a measurable reduction in execution time.
All optimizations are documented.
A Git commit is created where the first line of the commit message matches the Commit Message in Metadata exactly (perf(ci): analyze and optimize individual test execution performance), followed by a blank line, then additional lines providing relevant details about the implementation.
The commit is pushed to the remote on the branch matching the Branch in Metadata exactly (task/ci-individual-test-performance-analysis).
The commit is submitted as a pull request to master, reviewed, and merged before this issue is marked done.
All nox stages pass.
Coverage >= 97%.

Automated by CleverAgents Bot
Supervisor: Test Infrastructure | Agent: ca-new-issue-creator

## Metadata - **Branch**: `task/ci-individual-test-performance-analysis` - **Commit Message**: `perf(ci): analyze and optimize individual test execution performance` - **Milestone**: v3.8.0 - **Parent Epic**: #1678 ## Background and Context While the overall CI test execution is parallelized (addressed in Epic #1678), individual tests within the suite may themselves be slow and represent optimization opportunities. A more in-depth analysis of individual test performance is needed to identify and optimize these slow-running tests. This complements the broader CI execution time optimization effort by targeting test-level inefficiencies rather than pipeline-level structural gaps. ## Expected Behavior The test suite should have no individual tests that are disproportionately slow. Slow tests should be identified, their root causes understood, and where possible, refactored to run faster without reducing coverage. ## Acceptance Criteria - A profiling report of the test suite is produced, listing the slowest-running tests by execution time. - Root causes of the identified slow tests are documented. - At least one slow test is refactored and its execution time is measurably reduced. - All optimizations and findings are documented in the project documentation. ## Supporting Information - Parent Epic: #1678 — CI Execution Time Optimization — Timeouts, Concurrency, and Coverage Artifact Sharing - Related to overall CI wall-clock time reduction efforts. - Use `nox -s benchmark` for performance benchmarking; `nox -s unit_tests` for test suite profiling. ## Subtasks - [ ] Profile the test suite using appropriate tooling (e.g., `pytest --durations=20` via nox) to identify the slowest-running tests - [ ] Analyze the identified slow tests to find the root cause of the performance issue (e.g., excessive I/O, missing mocks, redundant setup) - [ ] Refactor at least one slow test to improve its performance without reducing coverage - [ ] Update or add BDD scenarios in `features/` to cover any refactored test behavior - [ ] Document the profiling findings and optimizations made - [ ] Verify coverage >= 97% via `nox -s coverage_report` - [ ] Run `nox` (all default sessions) and fix any errors ## Definition of Done This issue is complete when: - All subtasks above are completed and checked off. - A profiling report exists documenting the slowest tests and their root causes. - At least one slow test has been optimized with a measurable reduction in execution time. - All optimizations are documented. - A Git commit is created where the **first line** of the commit message matches the Commit Message in Metadata exactly (`perf(ci): analyze and optimize individual test execution performance`), followed by a blank line, then additional lines providing relevant details about the implementation. - The commit is pushed to the remote on the branch matching the **Branch** in Metadata exactly (`task/ci-individual-test-performance-analysis`). - The commit is submitted as a **pull request** to `master`, reviewed, and **merged** before this issue is marked done. - All nox stages pass. - Coverage >= 97%. --- **Automated by CleverAgents Bot** Supervisor: Test Infrastructure | Agent: ca-new-issue-creator

freemo added this to the v3.8.0 milestone

2026-04-03 11:24:39 +00:00

freemo commented

2026-04-03 11:39:34 +00:00

Author

Owner

Issue triaged by project owner:

State: Verified
Priority: Medium (confirmed)
Milestone: v3.8.0 (confirmed — CI infrastructure)
MoSCoW: Could Have — Individual test performance analysis is a CI optimization. Not blocking any deliverables.
Parent Epic: #1678 (confirmed correct)

Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: ca-project-owner

Issue triaged by project owner: - **State**: Verified - **Priority**: Medium (confirmed) - **Milestone**: v3.8.0 (confirmed — CI infrastructure) - **MoSCoW**: Could Have — Individual test performance analysis is a CI optimization. Not blocking any deliverables. - **Parent Epic**: #1678 (confirmed correct) --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: ca-project-owner

freemo added the

MoSCoW

Could have

label

2026-04-03 11:39:36 +00:00

freemo added a new dependency

2026-04-03 11:48:45 +00:00

#1678 Epic: CI Execution Time Optimization — Timeouts, Concurrency, and Coverage Artifact Sharing

freemo removed the

MoSCoW

Could have

label