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Java Profiling Workflow / Step 4 / Verify results · jabrena | DecimalAI

testingby jabrena

Java Profiling Workflow / Step 4 / Verify results

jabrena/164-java-profiling-verify

Source jabrena/plinth ↗License Apache-2.0

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 thread

SkillScore86Maintained

Automatic

Coding pack

Last verified 8/20/2026

What it changes

Passed 18 of 21 test cases with the skill, and 13 of 21 without it.

Without skill64%

With skill86%

Checks it passed that the model alone missed

Refers to references/164-java-profiling-verify.md
Requires recording the exact load patterns and test scenarios in the report
Asks a clarifying question regarding the ambiguous request scope before applying changes

and 2 more in the full report

5 fixed14 passed either way3 still failing0 broke

Pass-rate lift: +23 pp
Tokens: -20%
Agent turns: 0%
Response time: -52%

Model gemini-3.6-flashMeasured 8/20/2026v119 of 22 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/jabrena-164-java-profiling-verify/SKILL.md https://app.decimal.ai/s/jabrena-164-java-profiling-verify/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add jabrena-164-java-profiling-verify, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/jabrena-164-java-profiling-verify/ and pins it in .decimal/skills.lock

decimalai skills add jabrena-164-java-profiling-verify

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/jabrena-164-java-profiling-verify/SKILL.md https://app.decimal.ai/s/jabrena-164-java-profiling-verify/SKILL.md

Raw file: /s/jabrena-164-java-profiling-verify/SKILL.md ↗ · machine-readable summary at /s/jabrena-164-java-profiling-verify.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

We want to generate the final comparison docs. What is the mandatory first step before initiating post-refactoring profiling data generation?

What was checked, without and with the skill
Checked	Without skill	With skill
Requires reading references/164-java-profiling-verify.md and confirming baseline artifacts exist and are non-empty	Missed	Passed

case-17 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md59 lines2 files

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
Compare before and after profiling results
Performance benchmark
Check for performance regressions after refactoring

Workflow

Track record

Benchmark

18 / 21

test cases passed, vs 13 / 21 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

jabrena / plinth

skills/164-java-profiling-verify/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 10/2/2026Version v1Bundled 1 file

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

Java Profiling Workflow / Step 4 / Verify results

Constraints

When to use this skill

Workflow

Track record

Benchmark

Adoption

SkillSafety

Source

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