Enable Backpressure Management by Default

[adinauer]

📜 Description

Turn on backpressure management by default.

Implemented in #3072
Docs PR: getsentry/sentry-docs#9539

💡 Motivation and Context

To reduce overhead Sentry performance instrumentation causes in times of load.

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 3ed49b8

[adinauer]

Since there's currently no way of disabling backpressure for Android via Metadata I only enable it for backend. There usually shouldn't be as high a volume of transactions on Android.

[adinauer]

We decided in Backend Daily it's OK to disable backpressure management for Android. If we ever want it we'll have to make it configurable and probably do a separate test phase before enabling it by default there.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	370.04 ms	440.69 ms	70.65 ms
Size	1.70 MiB	2.28 MiB	592.12 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
99a51e2	405.11 ms	479.65 ms	74.54 ms
baaf637	375.71 ms	441.58 ms	65.87 ms
95a98b5	379.14 ms	420.80 ms	41.66 ms
8ff8fd0	432.77 ms	495.18 ms	62.41 ms
937879e	400.98 ms	482.84 ms	81.86 ms
4e29063	376.38 ms	390.98 ms	14.60 ms
28c9a83	366.20 ms	433.88 ms	67.67 ms
0bd723b	412.52 ms	496.65 ms	84.13 ms
93a76ca	377.96 ms	447.52 ms	69.56 ms
a537f8a	457.14 ms	514.19 ms	57.05 ms

App size

Revision	Plain	With Sentry	Diff
99a51e2	1.72 MiB	2.29 MiB	576.34 KiB
baaf637	1.72 MiB	2.27 MiB	558.42 KiB
95a98b5	1.70 MiB	2.27 MiB	586.31 KiB
8ff8fd0	1.72 MiB	2.27 MiB	558.15 KiB
937879e	1.72 MiB	2.27 MiB	558.42 KiB
4e29063	1.72 MiB	2.29 MiB	578.38 KiB
28c9a83	1.70 MiB	2.28 MiB	592.00 KiB
0bd723b	1.72 MiB	2.29 MiB	578.09 KiB
93a76ca	1.72 MiB	2.29 MiB	576.75 KiB
a537f8a	1.70 MiB	2.27 MiB	584.74 KiB

Previous results on branch: feat/backpressure-opt-out

Startup times

Revision	Plain	With Sentry	Diff
2b9eda9	340.57 ms	404.43 ms	63.86 ms
395c5fd	397.80 ms	466.40 ms	68.60 ms
858f42e	390.96 ms	454.06 ms	63.10 ms

App size

Revision	Plain	With Sentry	Diff
2b9eda9	1.70 MiB	2.28 MiB	591.98 KiB
395c5fd	1.70 MiB	2.28 MiB	591.95 KiB
858f42e	1.70 MiB	2.28 MiB	591.98 KiB

[lbloder]

Should we also reverse the enableBackPressureHandling boolean in the two SentryAutoConfigurationTest classes?

Otherwise LGTM 👍

[lbloder]

LGTM