Java Profiling Workflow / Step 2 / Analyze profiling data

Analyze profiling results systematically: inventory results (flamegraphs, JFR, GC logs, thread dumps), identify problems (memory leaks, CPU hotspots, threading issues), document findings using standardized templates (profiling-problem-analysis-YYYYMMDD.md, profiling-solutions-YYYYMMDD.md), prioritize using Impact/Effort scores, and correlate multiple profiling files for validation.

What is covered in this Skill?

• Inventory: scan profiler/results/ for allocation-flamegraph, heatmap-cpu, memory-leak, *.jfr, *.log, *.txt
• Problem identification: memory (leaks, excessive allocations, GC pressure), performance (CPU hotspots, blocking), threading (deadlocks, contention, pool saturation)
• Documentation: docs/profiling-problem-analysis-YYYYMMDD.md, docs/profiling-solutions-YYYYMMDD.md
• Prioritization: Impact (1–5) / Effort (1–5), focus on high priority first
• Tools: async-profiler, JFR, JProfiler/YourKit, GCViewer, flamegraphs, heatmaps

Scope: Validate profiling results represent realistic load scenarios. Cross-reference multiple files. Include quantitative metrics.

Constraints

Validate profiling results represent realistic load before analysis. Document assumptions and limitations. Cross-reference multiple files.

• VALIDATE: Ensure profiling results represent realistic load scenarios before analysis
• DOCUMENT: Record assumptions and limitations in analysis reports
• CROSS-REFERENCE: Use multiple profiling files to validate findings
• BEFORE APPLYING: Read the reference for problem analysis and solutions templates

When to use this skill

• Analyze JFR profile
• Profile analysis
• Performance analysis

Reference

For detailed guidance, examples, and constraints, see references/162-java-profiling-analyze.md.