Document that app start profiling is legacy-profiler only - #262
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On Android 15 (API level 35) and higher the SDK uses the platform ProfilingManager (Perfetto) backend, where startProfilerOnAppStart has no effect. The meta-data stays enabled since minSdkVersion is 21 and it still applies below API 35, but reading the manifest gave no hint that it is inert on newer devices. Ref: https://docs.sentry.io/platforms/android/profiling/#limitations Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Why
While pinning the empower TDA Android emulator to Android 15 (
sentry-demos/empower), I hit the profiling limitations for API level 35+:This manifest sets
io.sentry.traces.profiling.start-on-app-starttotrue, which reads as "app start profiling is on" — but on API 35+ it does nothing. Anyone demoing on a modern device and not seeing an app start profile has no way to tell that from the manifest.What
Comment only — no behavior change. The meta-data stays enabled:
minSdkVersionis 21, so the app still runs on plenty of devices below API 35 where the legacy profiler honors it. Removing it would have silently dropped app start profiling on exactly those devices.Related
setup_profiling_device.sh(#253) already covers the other API 35+ limitation — the framework rate limiter. This documents the remaining one in the place people actually read.🤖 Generated with Claude Code