rsbuild-performance-profiling

Use when profiling, analyzing, reporting, or optimizing Rsbuild performance, including build, dev server, rebuild, static asset serving, memory usage, and CPU profile analysis.

Ir a la instalación

Repositorio: web-infra-dev/rsbuild
Última actividad en el origen: 22 de junio de 2026 a las 02:48
Idioma detectado de SKILL.md: inglés
Estrellas: 3364
Forks: 273

Opciones de instalación

De forma predeterminada está seleccionado el prompt que primero revisa el origen. Puedes cambiar a un comando directo o descargar una copia local.

Instalar con Codex o Claude Copia este prompt, pégalo en Codex, Claude u otro asistente, y deja que revise la página de la skill y la instale por ti.

Un comando directo omite el prompt de revisión. Revisa el origen antes de ejecutarlo.

npx skills add https://github.com/web-infra-dev/rsbuild --skill rsbuild-performance-profiling

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¿Prefieres una copia local? Descarga los archivos que SkillsMP tiene disponibles ahora.

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SKILL.md

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Rsbuild Performance Profiling

Workflow

Define the target scenario before collecting data:

operation: build, dev startup, rebuild, request serving, memory usage, or another explicit flow
benchmark project or fixture
metric: wall time, CPU time, self time, allocations, RSS, heap
success threshold, if the user provided one

Record the baseline first. Keep runtime, package manager, dependencies, environment variables, command flags, and input project unchanged for comparisons.

Save raw artifacts when available, such as CPU profiles, heap snapshots, logs, timing output, and benchmark commands. Do not rely only on subjective observations.

Separate costs by ownership:

Rsbuild code paths
Rspack or loader/plugin internals
third-party dependencies
user project code or benchmark fixture code

Rank findings by measured impact. Prefer self time for direct optimization targets and total time for understanding call-chain impact.

If implementing an optimization, keep behavior unchanged unless the user explicitly asked for a behavior change. Prefer small, measurable changes over broad refactors.

Re-run the same benchmark after changes. Report before/after numbers, absolute delta, percentage delta, and any variance or confidence limits you can observe.

Analysis Rules

Treat the user's supplied profiles, reports, and benchmark numbers as the source of truth for that task.

Do not claim a performance win without comparable before/after measurements.

Do not optimize generated output, dependencies, or benchmark fixture code unless the user asked for that scope.

For CPU profiles, call out both hot functions and why they are on the hot path.

For memory tasks, distinguish peak usage from stable usage after warmup or repeated rebuilds.

Output

Return a concise report with:

benchmark command or data source

top findings ordered by impact

Rsbuild-owned optimization opportunities

changes made, if any

validation results and remaining risk