perf: Reduce reflection cost during SDK init (Init Reflection stack)#5634
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### Performance
- Reduce reflection cost during SDK init (Init Reflection stack) ([#5634](https://github.com/getsentry/sentry-java/pull/5634))If none of the above apply, you can opt out of this check by adding |
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…ializing (#5635) * perf(core): Probe class availability without initializing the class LoadClass.loadClass used Class.forName(name) which initializes the class. Used purely for availability probing during init, this eagerly runs unrelated static initializers (e.g. Compose's Owner, the fragment integration). Use Class.forName(name, false, classLoader) so the class is only initialized lazily on first real use. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * changelog * changelog: move init reflection entries to Performance * perf(core): Limit no-init class probing to isClassAvailable The previous change made loadClass itself skip class initialization, which affected callers that load a class to actually use it (NDK integration, OTEL span factory and scopes storage). Restore loadClass to its initializing behavior and confine the non-initializing probe to isClassAvailable, which is only ever used for classpath availability checks. This keeps SDK init cheap while leaving real-use callers unchanged. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 1edbdfa | 364.77 ms | 450.29 ms | 85.52 ms |
| a416a65 | 333.78 ms | 410.37 ms | 76.59 ms |
| d15471f | 302.62 ms | 353.84 ms | 51.22 ms |
| 22f4345 | 314.79 ms | 375.02 ms | 60.23 ms |
| 6b019b7 | 343.31 ms | 417.23 ms | 73.91 ms |
| 22f4345 | 312.78 ms | 347.40 ms | 34.62 ms |
| d217708 | 411.22 ms | 430.86 ms | 19.63 ms |
| 319f256 | 315.96 ms | 372.96 ms | 57.00 ms |
| e2dce0b | 308.96 ms | 360.10 ms | 51.14 ms |
| 8558cac | 306.16 ms | 355.24 ms | 49.09 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 1edbdfa | 1.58 MiB | 2.20 MiB | 635.34 KiB |
| a416a65 | 1.58 MiB | 2.12 MiB | 555.26 KiB |
| d15471f | 1.58 MiB | 2.13 MiB | 559.54 KiB |
| 22f4345 | 1.58 MiB | 2.29 MiB | 719.83 KiB |
| 6b019b7 | 0 B | 0 B | 0 B |
| 22f4345 | 1.58 MiB | 2.29 MiB | 719.83 KiB |
| d217708 | 1.58 MiB | 2.10 MiB | 532.97 KiB |
| 319f256 | 1.58 MiB | 2.19 MiB | 619.79 KiB |
| e2dce0b | 0 B | 0 B | 0 B |
| 8558cac | 0 B | 0 B | 0 B |
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PR Stack (Init Reflection)
Part of JAVA-587
Collection PR for the Init Reflection stack — reducing the reflection cost on the
SentryAndroid.initpath (found via the customer-provided Perfetto trace in the Reduce SDK init time [Android] project).Squash-merge this once all stack PRs below are merged into it.