feat(android): Parse memory and GC info from ANR thread dumps#5428
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Performance metrics 🚀
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| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 8558cac | 306.16 ms | 355.24 ms | 49.09 ms |
| 8687935 | 332.52 ms | 362.23 ms | 29.71 ms |
| 9054d65 | 330.94 ms | 403.24 ms | 72.30 ms |
| fc5ccaf | 322.49 ms | 405.25 ms | 82.76 ms |
| 8c1fb22 | 316.62 ms | 352.78 ms | 36.16 ms |
| d8912da | 329.94 ms | 389.68 ms | 59.74 ms |
| d15471f | 315.61 ms | 360.22 ms | 44.61 ms |
| b6702b0 | 395.86 ms | 409.98 ms | 14.12 ms |
| 62b579c | 318.48 ms | 367.71 ms | 49.24 ms |
| ed33deb | 312.34 ms | 369.71 ms | 57.37 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 8558cac | 0 B | 0 B | 0 B |
| 8687935 | 1.58 MiB | 2.19 MiB | 619.17 KiB |
| 9054d65 | 1.58 MiB | 2.29 MiB | 723.38 KiB |
| fc5ccaf | 1.58 MiB | 2.13 MiB | 557.54 KiB |
| 8c1fb22 | 0 B | 0 B | 0 B |
| d8912da | 0 B | 0 B | 0 B |
| d15471f | 1.58 MiB | 2.13 MiB | 559.54 KiB |
| b6702b0 | 1.58 MiB | 2.12 MiB | 551.79 KiB |
| 62b579c | 0 B | 0 B | 0 B |
| ed33deb | 1.58 MiB | 2.13 MiB | 559.52 KiB |
Previous results on branch: feat/anr-thread-dump-memory-info
Startup times
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 976a904 | 315.40 ms | 352.60 ms | 37.20 ms |
| e24f273 | 348.98 ms | 407.75 ms | 58.77 ms |
| fc3a862 | 316.67 ms | 394.40 ms | 77.73 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 976a904 | 0 B | 0 B | 0 B |
| e24f273 | 0 B | 0 B | 0 B |
| fc3a862 | 0 B | 0 B | 0 B |
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markushi
requested review from
0xadam-brown,
adinauer,
romtsn and
runningcode
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Really nice. Just a few comments; none have to block us.
Use dotted attribute names (e.g. gc.total_count, memory.free) to match the sentry-conventions schema from getsentry/sentry-conventions#382. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
0xadam-brown
approved these changes
May 18, 2026
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Thanks for the updates – lgtm 👍
runningcode
approved these changes
May 26, 2026
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Is there a way we can avoid having the ArtContext in the java sdk?
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As of now we keep all protocol definitions within the core module, as the core SDK could be used as a proxy and end up parsing / sending envelope files produced by other SDKs (like |
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📜 Description
Parses memory and GC metrics from ANRv2 dumps (ApplicationExitInfo traces) and attaches them as a new
artcontext on ANR events.New classes:
ArtContext— serializable context for ART runtime memory/GC fields (bytes and milliseconds), added toContextsArtContextParser— parses lines likeFree memory 3107KB,Total GC time: 11.807msusing simple suffix-based parsing (counterpart to Android'sPrettySizeandPrettyDurationoutput)The parsed data is attached as
event.contexts.artwith attribute names aligned to sentry-conventions#382.Resolves: #2801
💡 Motivation and Context
ANR thread dumps from ART contain memory and GC statistics that are currently ignored. This information is valuable for diagnosing memory pressure-related ANRs.
💚 How did you test it?
📝 Checklist
sendDefaultPIIis enabled.