jetbrains-vmoptions - SKILL.md Agent Skill

name: jetbrains-vmoptions description: Provides JetBrains IDE VM options knowledge for version-specific GC selection and memory/performance tuning (JDK 17/21, IDE 222+). Cross-platform only.

JetBrains IDE VM Options Capabilities

Provides reference knowledge to compose .vmoptions sets for JetBrains IDEs. Output format: Markdown with code blocks containing .vmoptions lines (no file generation).

Process Flow

Step 1: Collect Requirements
    │   └── Read [prerequisite-check.md] → Validate IDE version
    │
    ▼
Step 2: Research Options
    │   └── Read [gc-options.md], [memory-options.md], [common-options.md]
    │       based on user's goals
    │
    ▼
Step 3: Draft Output
    │   └── Generate preliminary vmoptions
    │
    ▼
Step 4: Self-Review
    │   └── Verify each option matches user's requirements
    │       Remove irrelevant or conflicting options
    │
    ▼
Step 5: Share & Review
    └── Present final vmoptions to user with explanations

Scope

IDE version ranges: 222-242 (JDK 17), 243+ (JDK 21)
Cross-platform JVM options only (.vmoptions, one option per line, # comments)
GC selection/tuning: Generational ZGC, ZGC, G1GC, Shenandoah, Parallel, Serial
Memory/Code cache/Metaspace/Reference processing flags
Compiler/runtime performance options commonly used for IDE tuning

References

File	Content
prerequisite-check.md	Required input validation logic (read first)
gc-options.md	Detailed GC flags and tuning parameters
memory-options.md	Memory management options
common-options.md	Commonly used performance flags