compose-performance-audit

name	compose-performance-audit
description	Audit and improve Jetpack Compose runtime performance from code review and architecture. Use when asked to diagnose slow rendering, janky scrolling, excessive recompositions, or performance issues in Compose UI.

Compose Performance Audit

Overview

Audit Jetpack Compose view performance end-to-end, from instrumentation and baselining to root-cause analysis and concrete remediation steps.

Workflow Decision Tree

• If the user provides code, start with "Code-First Review."
• If the user only describes symptoms, ask for minimal code/context, then do "Code-First Review."
• If code review is inconclusive, go to "Guide the User to Profile" and ask for Layout Inspector output or Perfetto traces.

1. Code-First Review

Collect:

• Target Composable code.
• Data flow: state, remember, derived state, ViewModel connections.
• Symptoms and reproduction steps.

Focus on:

• Recomposition storms from unstable parameters or broad state changes.
• Unstable keys in LazyColumn/LazyRow (key churn, missing keys).
• Heavy work in composition (formatting, sorting, filtering, object allocation).
• Unnecessary recompositions (missing remember, unstable classes, lambdas).
• Large images without proper sizing or async loading.
• Layout thrash (deep nesting, intrinsic measurements, SubcomposeLayout misuse).

Provide:

• Likely root causes with code references.
• Suggested fixes and refactors.
• If needed, a minimal repro or instrumentation suggestion.