164-java-profiling-verify
Use when you need to verify Java performance optimizations by comparing profiling results before and after refactoring — including baseline validation, post-refactoring report generation, quantitative before/after metrics comparison, side-by-side flamegraph analysis, regression detection, or creating profiling-comparison-analysis and profiling-final-results documentation. This should trigger for requests such as Verify performance fix; Verify the performance; Verify the memory; Verify the threading. Part of cursor-rules-java project
What this skill does
# Java Profiling Workflow / Step 4 / Verify results Verify performance optimizations through rigorous before/after comparison: ensure baseline and post-refactoring profiling data use identical test conditions, generate post-refactoring reports, compare metrics (memory, CPU, GC, threading), perform side-by-side flamegraph analysis, document findings in profiling-comparison-analysis-YYYYMMDD.md and profiling-final-results-YYYYMMDD.md, and validate success criteria. **What is covered in this Skill?** - Pre-refactoring baseline: run profiler with same load before changes - Post-refactoring: generate new reports with identical test conditions - Comparison: memory (leaks, allocations, GC), CPU (hotspots, contention), visual flamegraph comparison - Documentation: profiler/docs/profiling-comparison-analysis-YYYYMMDD.md, profiler/docs/profiling-final-results-YYYYMMDD.md - File naming: baseline/after suffixes, timestamp-based organization - Validation: verify reports exist, compare metrics, identify regressions **Scope:** Identical test conditions are critical. Document test scenarios. Validate application runs with refactored code before generating new reports. ## Constraints Use identical test conditions between baseline and post-refactoring. Verify both report sets are complete. Document test scenarios. - **CONSISTENCY**: Use identical test conditions and load patterns for baseline and post-refactoring - **VALIDATE**: Ensure both baseline and post-refactoring reports exist and are non-empty before comparison - **DOCUMENT**: Record test scenarios and load patterns for reproduction - **BEFORE APPLYING**: Read the reference for comparison templates and validation steps - **EDGE CASE**: If request scope is ambiguous, stop and ask a clarifying question before applying changes - **EDGE CASE**: If required inputs, files, or tooling are missing, report what is missing and ask whether to proceed with setup guidance ## When to use this skill - Verify performance fix - Verify the performance - Verify the memory - Verify the threading - Verify the GC - Verify the profiling - Verify the profiling - Performance benchmark ## Workflow 1. **Read verification reference and confirm baseline data** Read `references/164-java-profiling-verify.md` and verify baseline artifacts exist and are non-empty. 2. **Generate post-refactoring profiling data** Run profiling with identical load/test conditions to produce comparable post-refactoring artifacts. 3. **Compare before/after metrics and visuals** Perform quantitative comparisons for memory/CPU/GC/threading and side-by-side flamegraph analysis. 4. **Document final verification outcome** Create comparison and final results reports with regressions, gains, and reproducible scenario details. ## Reference For detailed guidance, examples, and constraints, see [references/164-java-profiling-verify.md](references/164-java-profiling-verify.md).
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