Verwendung
- Installationsbefehl kopieren und das Quellpaket vor der Installation in der eigenen Agentenumgebung prüfen.
- Benötigte Werkzeuge, Zugangsdaten und Hosts im Original prüfen.
- Eingabe und gewünschtes Ergebnis beschreiben und die Ausgabe mit den Quellen abgleichen.
npx skills add https://github.com/rcosteira79/android-skills --skill gradle-build-performanceVor dem Start
- Die Installation umfasst weder Modellabo noch API-Kontingent oder Dateizugriffsrechte.
- Sterne und Installationen zeigen Aktivität, keine unabhängige Qualitäts- oder Sicherheitsprüfung.
Aus dem Quell-Repository gerendert; Überschriften, Beispiele, Code, Tabellen, Links und Bilder bleiben erhalten.
Gradle Build Performance
This reference covers the workflow discipline plus the patterns that move the needle and are easy to get wrong, not the standard knobs (org.gradle.caching, org.gradle.parallel, org.gradle.jvmargs, android.nonTransitiveRClass, kapt → ksp).
Workflow: measure a baseline (clean + incremental) → ./gradlew assembleDebug --scan (or --profile for a no-upload report) → find the slow phase (configuration / execution / dependency resolution) in the Build Scan timeline → apply one optimization at a time → measure again. Batching changes means you never learn what helped.
Configuration phase — the cheapest wins
- Configuration cache (
org.gradle.configuration-cache=true, AGP 8+) skips the entire configuration phase when inputs are unchanged. Start withorg.gradle.configuration-cache.problems=warn, move tofailonce clean. - No I/O during configuration. A
file("version.txt").readText(), a network call, orexec {}at configuration time breaks the configuration cache and slows every build — defer it to execution:providers.fileContents(layout.projectDirectory.file("version.txt")).asText. - Lazy task registration —
tasks.register("x") { … }(configured only if it's in the execution graph), nevertasks.create("x") { … }(eager). - Convention plugins, not `subprojects {}` / `allprojects {}` — those root-build blocks eagerly evaluate every subproject. Move shared config into convention plugins (see
android-skills:android-gradle-logic).
kapt → KSP (mandatory on AGP 9)
KSP is ~2× faster than kapt, and AGP 9 makes the migration mandatory — it has built-in Kotlin support and org.jetbrains.kotlin.kapt is incompatible with it. Migrate to KSP (requires KSP 2.3.1+ on AGP 9; Hilt / Room / Moshi all support it), or fall back to com.android.legacy-kapt (same version as AGP) for annotation processors with no KSP equivalent. See JetBrains' `kotlin-tooling-agp9-migration` skill for the broader AGP 9 mechanics.
Dependency resolution
- Pin versions — a dynamic
1.0.+or-SNAPSHOTforces a network resolution check on every build. Pin1.2.3. - Repository order — Gradle checks repositories in declaration order; put the most-used first (
google()thenmavenCentral(), third-party last).
A reasonable gradle.properties baseline
org.gradle.configuration-cache=true
org.gradle.caching=true
org.gradle.parallel=true
org.gradle.jvmargs=-Xmx4g -XX:+UseParallelGC
android.nonTransitiveRClass=true
