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Merged
VianneyRuhlmann merged 17 commits into from
Jan 30, 2026
Merged

fix(celery): stop native runtime before celery daemonization #16050

VianneyRuhlmann merged 17 commits into from
Jan 30, 2026
+56 −0

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@VianneyRuhlmann VianneyRuhlmann commented Jan 14, 2026 •
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Description

When celery starts beat (celery's scheduler) it creates a new process by forking and then closing all file descriptors. This causes panics in the rust tokio runtime as this runtime is created in after_fork hooks and manipulates epoll file descriptors (which are closed by celery). We fix the issue by shutting down the tokio runtime before calling close_open_fds and starting it again afterwards.

Note

This is done by considering close_open_fds as fork and calling all fork hooks, this is necessary since any tokio runtime will encounter this issue otherwise (e.g. NativeWriter, profile manager). This doesn't cause any problem for existing fork hooks however this could cause unexpected behavior with future hooks. The ongoing work to share a single tokio native runtime for native code should allow us to refactor this to only shut down this runtime.

Testing

Run any celery app with celery -A celery_app worker --beat or just the beat worker celery beat --detached. No beat traces sent without the fix, works with the fix. A regression test has been added to check the absence of panic in the beat process.

Risks

None

Additional Notes

See this page for details on the bug.

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Codeowners resolved as

ddtrace/contrib/internal/celery/app.py                                  @DataDog/apm-core-python @DataDog/apm-idm-python
releasenotes/notes/fix-celery-panic-03dd47d624a6d447.yaml               @DataDog/apm-python
tests/contrib/celery/test_integration.py                                @DataDog/apm-core-python @DataDog/apm-idm-python

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Performance SLOs

Comparing candidate vianney/fix-celery-panic (accd6b5) with baseline main (deb2792)

📈 Performance Regressions (3 suites)
📈 iastaspectsospath - 24/24

✅ ospathbasename_aspect

Time: ✅ 503.667µs (SLO: <700.000µs 📉 -28.0%) vs baseline: 📈 +21.0%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +5.7%

✅ ospathbasename_noaspect

Time: ✅ 427.828µs (SLO: <700.000µs 📉 -38.9%) vs baseline: +0.8%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.8%

✅ ospathjoin_aspect

Time: ✅ 630.204µs (SLO: <700.000µs -10.0%) vs baseline: +2.5%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.5%

✅ ospathjoin_noaspect

Time: ✅ 639.863µs (SLO: <700.000µs -8.6%) vs baseline: +3.0%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.4%

✅ ospathnormcase_aspect

Time: ✅ 348.305µs (SLO: <700.000µs 📉 -50.2%) vs baseline: +0.5%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.5%

✅ ospathnormcase_noaspect

Time: ✅ 357.273µs (SLO: <700.000µs 📉 -49.0%) vs baseline: +1.4%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.9%

✅ ospathsplit_aspect

Time: ✅ 494.273µs (SLO: <700.000µs 📉 -29.4%) vs baseline: +4.5%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.6%

✅ ospathsplit_noaspect

Time: ✅ 505.901µs (SLO: <700.000µs 📉 -27.7%) vs baseline: +4.6%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +5.9%

✅ ospathsplitdrive_aspect

Time: ✅ 376.989µs (SLO: <700.000µs 📉 -46.1%) vs baseline: +2.8%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.5%

✅ ospathsplitdrive_noaspect

Time: ✅ 73.219µs (SLO: <700.000µs 📉 -89.5%) vs baseline: ~same

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%)

✅ ospathsplitext_aspect

Time: ✅ 454.633µs (SLO: <700.000µs 📉 -35.1%) vs baseline: +0.3%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.7%

✅ ospathsplitext_noaspect

Time: ✅ 469.802µs (SLO: <700.000µs 📉 -32.9%) vs baseline: +1.5%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.8%

📈 iastaspectssplit - 12/12

✅ rsplit_aspect

Time: ✅ 161.030µs (SLO: <250.000µs 📉 -35.6%) vs baseline: 📈 +10.3%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.3%

✅ rsplit_noaspect

Time: ✅ 158.044µs (SLO: <250.000µs 📉 -36.8%) vs baseline: +3.1%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.9%

✅ split_aspect

Time: ✅ 148.339µs (SLO: <250.000µs 📉 -40.7%) vs baseline: +3.0%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +6.0%

✅ split_noaspect

Time: ✅ 156.032µs (SLO: <250.000µs 📉 -37.6%) vs baseline: +2.4%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +5.6%

✅ splitlines_aspect

Time: ✅ 145.168µs (SLO: <250.000µs 📉 -41.9%) vs baseline: -0.3%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.6%

✅ splitlines_noaspect

Time: ✅ 149.761µs (SLO: <250.000µs 📉 -40.1%) vs baseline: -2.2%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +5.5%

📈 telemetryaddmetric - 30/30

✅ 1-count-metric-1-times

Time: ✅ 3.423µs (SLO: <20.000µs 📉 -82.9%) vs baseline: 📈 +12.5%

Memory: ✅ 35.271MB (SLO: <38.000MB -7.2%) vs baseline: +5.1%

✅ 1-count-metrics-100-times

Time: ✅ 205.443µs (SLO: <220.000µs -6.6%) vs baseline: +2.9%

Memory: ✅ 35.212MB (SLO: <38.000MB -7.3%) vs baseline: +4.7%

✅ 1-distribution-metric-1-times

Time: ✅ 3.286µs (SLO: <20.000µs 📉 -83.6%) vs baseline: -3.5%

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +5.9%

✅ 1-distribution-metrics-100-times

Time: ✅ 213.127µs (SLO: <230.000µs -7.3%) vs baseline: -1.1%

Memory: ✅ 35.468MB (SLO: <38.000MB -6.7%) vs baseline: +5.5%

✅ 1-gauge-metric-1-times

Time: ✅ 2.148µs (SLO: <20.000µs 📉 -89.3%) vs baseline: -1.9%

Memory: ✅ 35.193MB (SLO: <38.000MB -7.4%) vs baseline: +4.6%

✅ 1-gauge-metrics-100-times

Time: ✅ 136.537µs (SLO: <150.000µs -9.0%) vs baseline: +0.1%

Memory: ✅ 35.173MB (SLO: <38.000MB -7.4%) vs baseline: +4.6%

✅ 1-rate-metric-1-times

Time: ✅ 3.068µs (SLO: <20.000µs 📉 -84.7%) vs baseline: -3.4%

Memory: ✅ 35.350MB (SLO: <38.000MB -7.0%) vs baseline: +5.2%

✅ 1-rate-metrics-100-times

Time: ✅ 218.922µs (SLO: <250.000µs 📉 -12.4%) vs baseline: +3.0%

Memory: ✅ 35.291MB (SLO: <38.000MB -7.1%) vs baseline: +5.0%

✅ 100-count-metrics-100-times

Time: ✅ 20.831ms (SLO: <22.000ms -5.3%) vs baseline: +3.2%

Memory: ✅ 35.488MB (SLO: <38.000MB -6.6%) vs baseline: +5.5%

✅ 100-distribution-metrics-100-times

Time: ✅ 2.227ms (SLO: <2.550ms 📉 -12.7%) vs baseline: -0.8%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +6.2%

✅ 100-gauge-metrics-100-times

Time: ✅ 1.403ms (SLO: <1.550ms -9.5%) vs baseline: ~same

Memory: ✅ 35.488MB (SLO: <38.000MB -6.6%) vs baseline: +5.7%

✅ 100-rate-metrics-100-times

Time: ✅ 2.263ms (SLO: <2.550ms 📉 -11.2%) vs baseline: +2.4%

Memory: ✅ 35.507MB (SLO: <38.000MB -6.6%) vs baseline: +5.7%

✅ flush-1-metric

Time: ✅ 4.539µs (SLO: <20.000µs 📉 -77.3%) vs baseline: -1.6%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +4.9%

✅ flush-100-metrics

Time: ✅ 174.262µs (SLO: <250.000µs 📉 -30.3%) vs baseline: +0.1%

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +4.6%

✅ flush-1000-metrics

Time: ✅ 2.178ms (SLO: <2.500ms 📉 -12.9%) vs baseline: -1.4%

Memory: ✅ 36.431MB (SLO: <38.750MB -6.0%) vs baseline: +4.7%

🟡 Near SLO Breach (1 suite)
🟡 tracer - 6/6

✅ large

Time: ✅ 31.640ms (SLO: <32.950ms -4.0%) vs baseline: ~same

Memory: ✅ 36.766MB (SLO: <39.250MB -6.3%) vs baseline: +5.4%

✅ medium

Time: ✅ 3.149ms (SLO: <3.200ms 🟡 -1.6%) vs baseline: +0.7%

Memory: ✅ 35.212MB (SLO: <38.750MB -9.1%) vs baseline: +4.7%

✅ small

Time: ✅ 365.021µs (SLO: <370.000µs 🟡 -1.3%) vs baseline: +3.0%

Memory: ✅ 35.291MB (SLO: <38.750MB -8.9%) vs baseline: +4.9%

⚠️ Unstable Tests (2 suites)
⚠️ coreapiscenario - 10/10 (1 unstable)

⚠️ context_with_data_listeners

Time: ⚠️ 13.304µs (SLO: <20.000µs 📉 -33.5%) vs baseline: +0.2%

Memory: ✅ 35.271MB (SLO: <38.000MB -7.2%) vs baseline: +5.2%

✅ context_with_data_no_listeners

Time: ✅ 3.278µs (SLO: <10.000µs 📉 -67.2%) vs baseline: ~same

Memory: ✅ 35.212MB (SLO: <38.000MB -7.3%) vs baseline: +4.6%

✅ get_item_exists

Time: ✅ 0.582µs (SLO: <10.000µs 📉 -94.2%) vs baseline: +0.7%

Memory: ✅ 35.291MB (SLO: <38.000MB -7.1%) vs baseline: +5.0%

✅ get_item_missing

Time: ✅ 0.634µs (SLO: <10.000µs 📉 -93.7%) vs baseline: -0.9%

Memory: ✅ 35.173MB (SLO: <38.000MB -7.4%) vs baseline: +4.8%

✅ set_item

Time: ✅ 24.231µs (SLO: <30.000µs 📉 -19.2%) vs baseline: -0.9%

Memory: ✅ 35.232MB (SLO: <38.000MB -7.3%) vs baseline: +4.9%

⚠️ packagesupdateimporteddependencies - 24/24 (1 unstable)

✅ import_many

Time: ✅ 155.094µs (SLO: <170.000µs -8.8%) vs baseline: -0.4%

Memory: ✅ 40.724MB (SLO: <46.000MB 📉 -11.5%) vs baseline: +5.5%

✅ import_many_cached

Time: ✅ 121.492µs (SLO: <130.000µs -6.5%) vs baseline: +0.5%

Memory: ✅ 40.607MB (SLO: <46.000MB 📉 -11.7%) vs baseline: +5.5%

✅ import_many_stdlib

Time: ✅ 0.756ms (SLO: <1.750ms 📉 -56.8%) vs baseline: -0.1%

Memory: ✅ 40.471MB (SLO: <46.000MB 📉 -12.0%) vs baseline: +5.5%

⚠️ import_many_stdlib_cached

Time: ⚠️ 0.173ms (SLO: <1.100ms 📉 -84.3%) vs baseline: -0.6%

Memory: ✅ 40.507MB (SLO: <46.000MB 📉 -11.9%) vs baseline: +4.5%

✅ import_many_unknown

Time: ✅ 835.170µs (SLO: <890.000µs -6.2%) vs baseline: +0.5%

Memory: ✅ 40.754MB (SLO: <46.000MB 📉 -11.4%) vs baseline: +5.3%

✅ import_many_unknown_cached

Time: ✅ 792.725µs (SLO: <870.000µs -8.9%) vs baseline: +0.2%

Memory: ✅ 40.584MB (SLO: <46.000MB 📉 -11.8%) vs baseline: +5.1%

✅ import_one

Time: ✅ 20.078µs (SLO: <30.000µs 📉 -33.1%) vs baseline: +1.5%

Memory: ✅ 40.498MB (SLO: <46.000MB 📉 -12.0%) vs baseline: +5.1%

✅ import_one_cache

Time: ✅ 6.291µs (SLO: <10.000µs 📉 -37.1%) vs baseline: +0.2%

Memory: ✅ 40.419MB (SLO: <46.000MB 📉 -12.1%) vs baseline: +4.6%

✅ import_one_stdlib

Time: ✅ 18.838µs (SLO: <20.000µs -5.8%) vs baseline: +0.4%

Memory: ✅ 40.396MB (SLO: <46.000MB 📉 -12.2%) vs baseline: +4.3%

✅ import_one_stdlib_cache

Time: ✅ 6.280µs (SLO: <10.000µs 📉 -37.2%) vs baseline: ~same

Memory: ✅ 40.671MB (SLO: <46.000MB 📉 -11.6%) vs baseline: +5.0%

✅ import_one_unknown

Time: ✅ 45.533µs (SLO: <50.000µs -8.9%) vs baseline: +0.3%

Memory: ✅ 40.309MB (SLO: <46.000MB 📉 -12.4%) vs baseline: +4.5%

✅ import_one_unknown_cache

Time: ✅ 6.275µs (SLO: <10.000µs 📉 -37.2%) vs baseline: -0.5%

Memory: ✅ 40.704MB (SLO: <43.000MB -5.3%) vs baseline: +5.3%

✅ All Tests Passing (18 suites)
✅ djangosimple - 30/30

✅ appsec

Time: ✅ 19.531ms (SLO: <22.300ms 📉 -12.4%) vs baseline: -0.3%

Memory: ✅ 68.805MB (SLO: <73.500MB -6.4%) vs baseline: +5.1%

✅ exception-replay-enabled

Time: ✅ 1.383ms (SLO: <1.450ms -4.6%) vs baseline: -0.2%

Memory: ✅ 66.960MB (SLO: <71.500MB -6.4%) vs baseline: +5.0%

✅ iast

Time: ✅ 19.631ms (SLO: <22.250ms 📉 -11.8%) vs baseline: +0.2%

Memory: ✅ 68.773MB (SLO: <75.000MB -8.3%) vs baseline: +4.9%

✅ profiler

Time: ✅ 15.293ms (SLO: <16.550ms -7.6%) vs baseline: ~same

Memory: ✅ 56.962MB (SLO: <61.000MB -6.6%) vs baseline: +5.1%

✅ resource-renaming

Time: ✅ 19.607ms (SLO: <21.750ms -9.9%) vs baseline: +0.6%

Memory: ✅ 68.852MB (SLO: <73.500MB -6.3%) vs baseline: +4.8%

✅ span-code-origin

Time: ✅ 19.929ms (SLO: <28.200ms 📉 -29.3%) vs baseline: +0.4%

Memory: ✅ 68.632MB (SLO: <75.000MB -8.5%) vs baseline: +5.1%

✅ tracer

Time: ✅ 19.588ms (SLO: <21.750ms -9.9%) vs baseline: ~same

Memory: ✅ 68.752MB (SLO: <75.000MB -8.3%) vs baseline: +5.1%

✅ tracer-and-profiler

Time: ✅ 21.655ms (SLO: <23.500ms -7.8%) vs baseline: ~same

Memory: ✅ 70.248MB (SLO: <75.000MB -6.3%) vs baseline: +4.9%

✅ tracer-dont-create-db-spans

Time: ✅ 19.721ms (SLO: <21.500ms -8.3%) vs baseline: +0.4%

Memory: ✅ 68.811MB (SLO: <75.000MB -8.3%) vs baseline: +5.0%

✅ tracer-minimal

Time: ✅ 16.827ms (SLO: <17.500ms -3.8%) vs baseline: ~same

Memory: ✅ 68.852MB (SLO: <75.000MB -8.2%) vs baseline: +4.9%

✅ tracer-native

Time: ✅ 19.489ms (SLO: <21.750ms 📉 -10.4%) vs baseline: ~same

Memory: ✅ 68.870MB (SLO: <72.500MB -5.0%) vs baseline: +5.1%

✅ tracer-no-caches

Time: ✅ 17.588ms (SLO: <19.650ms 📉 -10.5%) vs baseline: +0.3%

Memory: ✅ 68.792MB (SLO: <75.000MB -8.3%) vs baseline: +5.0%

✅ tracer-no-databases

Time: ✅ 19.270ms (SLO: <20.100ms -4.1%) vs baseline: +0.4%

Memory: ✅ 68.852MB (SLO: <75.000MB -8.2%) vs baseline: +5.1%

✅ tracer-no-middleware

Time: ✅ 19.324ms (SLO: <21.500ms 📉 -10.1%) vs baseline: +0.4%

Memory: ✅ 68.832MB (SLO: <75.000MB -8.2%) vs baseline: +4.9%

✅ tracer-no-templates

Time: ✅ 19.519ms (SLO: <22.000ms 📉 -11.3%) vs baseline: +0.8%

Memory: ✅ 68.810MB (SLO: <73.500MB -6.4%) vs baseline: +5.1%

✅ errortrackingdjangosimple - 6/6

✅ errortracking-enabled-all

Time: ✅ 16.422ms (SLO: <19.850ms 📉 -17.3%) vs baseline: +0.8%

Memory: ✅ 70.484MB (SLO: <75.000MB -6.0%) vs baseline: +5.3%

✅ errortracking-enabled-user

Time: ✅ 16.371ms (SLO: <19.400ms 📉 -15.6%) vs baseline: ~same

Memory: ✅ 70.504MB (SLO: <75.000MB -6.0%) vs baseline: +5.1%

✅ tracer-enabled

Time: ✅ 16.297ms (SLO: <19.450ms 📉 -16.2%) vs baseline: -0.1%

Memory: ✅ 70.425MB (SLO: <75.000MB -6.1%) vs baseline: +5.3%

✅ errortrackingflasksqli - 6/6

✅ errortracking-enabled-all

Time: ✅ 2.090ms (SLO: <2.300ms -9.1%) vs baseline: ~same

Memory: ✅ 56.132MB (SLO: <60.000MB -6.4%) vs baseline: +4.6%

✅ errortracking-enabled-user

Time: ✅ 2.101ms (SLO: <2.250ms -6.6%) vs baseline: ~same

Memory: ✅ 56.191MB (SLO: <60.000MB -6.3%) vs baseline: +4.8%

✅ tracer-enabled

Time: ✅ 2.093ms (SLO: <2.300ms -9.0%) vs baseline: ~same

Memory: ✅ 56.112MB (SLO: <60.000MB -6.5%) vs baseline: +4.7%

✅ flasksimple - 18/18

✅ appsec-get

Time: ✅ 3.398ms (SLO: <4.750ms 📉 -28.5%) vs baseline: -0.7%

Memory: ✅ 56.249MB (SLO: <66.500MB 📉 -15.4%) vs baseline: +5.0%

✅ appsec-post

Time: ✅ 2.891ms (SLO: <6.750ms 📉 -57.2%) vs baseline: +0.3%

Memory: ✅ 56.364MB (SLO: <66.500MB 📉 -15.2%) vs baseline: +5.2%

✅ appsec-telemetry

Time: ✅ 3.439ms (SLO: <4.750ms 📉 -27.6%) vs baseline: +1.2%

Memory: ✅ 56.319MB (SLO: <66.500MB 📉 -15.3%) vs baseline: +5.2%

✅ debugger

Time: ✅ 1.871ms (SLO: <2.000ms -6.4%) vs baseline: +0.2%

Memory: ✅ 48.197MB (SLO: <51.500MB -6.4%) vs baseline: +5.0%

✅ iast-get

Time: ✅ 1.864ms (SLO: <2.000ms -6.8%) vs baseline: +0.3%

Memory: ✅ 45.295MB (SLO: <49.000MB -7.6%) vs baseline: +5.3%

✅ profiler

Time: ✅ 1.895ms (SLO: <2.100ms -9.7%) vs baseline: ~same

Memory: ✅ 49.239MB (SLO: <52.500MB -6.2%) vs baseline: +5.0%

✅ resource-renaming

Time: ✅ 3.378ms (SLO: <3.650ms -7.5%) vs baseline: -0.9%

Memory: ✅ 56.376MB (SLO: <60.000MB -6.0%) vs baseline: +5.5%

✅ tracer

Time: ✅ 3.407ms (SLO: <3.650ms -6.7%) vs baseline: +0.4%

Memory: ✅ 56.320MB (SLO: <60.000MB -6.1%) vs baseline: +5.0%

✅ tracer-native

Time: ✅ 3.402ms (SLO: <3.650ms -6.8%) vs baseline: +0.2%

Memory: ✅ 56.246MB (SLO: <60.000MB -6.3%) vs baseline: +5.1%

✅ flasksqli - 6/6

✅ appsec-enabled

Time: ✅ 2.085ms (SLO: <4.200ms 📉 -50.4%) vs baseline: -0.1%

Memory: ✅ 56.289MB (SLO: <66.000MB 📉 -14.7%) vs baseline: +5.0%

✅ iast-enabled

Time: ✅ 2.101ms (SLO: <2.800ms 📉 -24.9%) vs baseline: +0.2%

Memory: ✅ 56.210MB (SLO: <62.500MB 📉 -10.1%) vs baseline: +4.8%

✅ tracer-enabled

Time: ✅ 2.087ms (SLO: <2.250ms -7.2%) vs baseline: -0.2%

Memory: ✅ 56.151MB (SLO: <60.000MB -6.4%) vs baseline: +4.8%

✅ httppropagationextract - 60/60

✅ all_styles_all_headers

Time: ✅ 80.702µs (SLO: <100.000µs 📉 -19.3%) vs baseline: -0.3%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +6.3%

✅ b3_headers

Time: ✅ 14.076µs (SLO: <20.000µs 📉 -29.6%) vs baseline: +0.4%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +4.9%

✅ b3_single_headers

Time: ✅ 13.173µs (SLO: <20.000µs 📉 -34.1%) vs baseline: -0.7%

Memory: ✅ 35.625MB (SLO: <38.000MB -6.2%) vs baseline: +4.7%

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

Time: ✅ 64.065µs (SLO: <80.000µs 📉 -19.9%) vs baseline: +0.2%

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +6.1%

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

Time: ✅ 65.650µs (SLO: <80.000µs 📉 -17.9%) vs baseline: -0.4%

Memory: ✅ 35.625MB (SLO: <38.000MB -6.2%) vs baseline: +5.9%

✅ empty_headers

Time: ✅ 1.603µs (SLO: <10.000µs 📉 -84.0%) vs baseline: -1.1%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +4.9%

✅ full_t_id_datadog_headers

Time: ✅ 22.459µs (SLO: <30.000µs 📉 -25.1%) vs baseline: +0.7%

Memory: ✅ 35.606MB (SLO: <38.000MB -6.3%) vs baseline: +5.9%

✅ invalid_priority_header

Time: ✅ 6.469µs (SLO: <10.000µs 📉 -35.3%) vs baseline: -0.9%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +5.1%

✅ invalid_span_id_header

Time: ✅ 6.529µs (SLO: <10.000µs 📉 -34.7%) vs baseline: ~same

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +5.4%

✅ invalid_tags_header

Time: ✅ 6.487µs (SLO: <10.000µs 📉 -35.1%) vs baseline: -0.6%

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +4.6%

✅ invalid_trace_id_header

Time: ✅ 6.516µs (SLO: <10.000µs 📉 -34.8%) vs baseline: +0.2%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +5.1%

✅ large_header_no_matches

Time: ✅ 27.614µs (SLO: <30.000µs -8.0%) vs baseline: +0.2%

Memory: ✅ 35.802MB (SLO: <38.000MB -5.8%) vs baseline: +5.4%

✅ large_valid_headers_all

Time: ✅ 28.879µs (SLO: <40.000µs 📉 -27.8%) vs baseline: +0.3%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +5.1%

✅ medium_header_no_matches

Time: ✅ 9.840µs (SLO: <20.000µs 📉 -50.8%) vs baseline: +0.1%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +5.3%

✅ medium_valid_headers_all

Time: ✅ 11.276µs (SLO: <20.000µs 📉 -43.6%) vs baseline: ~same

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +5.0%

✅ none_propagation_style

Time: ✅ 1.687µs (SLO: <10.000µs 📉 -83.1%) vs baseline: -1.2%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +5.0%

✅ tracecontext_headers

Time: ✅ 34.743µs (SLO: <40.000µs 📉 -13.1%) vs baseline: +1.0%

Memory: ✅ 35.606MB (SLO: <38.000MB -6.3%) vs baseline: +6.1%

✅ valid_headers_all

Time: ✅ 6.496µs (SLO: <10.000µs 📉 -35.0%) vs baseline: -0.2%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +4.7%

✅ valid_headers_basic

Time: ✅ 6.085µs (SLO: <10.000µs 📉 -39.1%) vs baseline: -0.2%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +5.1%

✅ wsgi_empty_headers

Time: ✅ 1.603µs (SLO: <10.000µs 📉 -84.0%) vs baseline: +0.5%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +5.0%

✅ wsgi_invalid_priority_header

Time: ✅ 6.561µs (SLO: <10.000µs 📉 -34.4%) vs baseline: ~same

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +4.7%

✅ wsgi_invalid_span_id_header

Time: ✅ 1.600µs (SLO: <10.000µs 📉 -84.0%) vs baseline: -0.7%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +5.2%

✅ wsgi_invalid_tags_header

Time: ✅ 6.559µs (SLO: <10.000µs 📉 -34.4%) vs baseline: +0.4%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +5.1%

✅ wsgi_invalid_trace_id_header

Time: ✅ 6.556µs (SLO: <10.000µs 📉 -34.4%) vs baseline: -0.2%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +5.1%

✅ wsgi_large_header_no_matches

Time: ✅ 28.844µs (SLO: <40.000µs 📉 -27.9%) vs baseline: +0.9%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +4.8%

✅ wsgi_large_valid_headers_all

Time: ✅ 29.961µs (SLO: <40.000µs 📉 -25.1%) vs baseline: +0.4%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +5.1%

✅ wsgi_medium_header_no_matches

Time: ✅ 10.207µs (SLO: <20.000µs 📉 -49.0%) vs baseline: +1.5%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +5.0%

✅ wsgi_medium_valid_headers_all

Time: ✅ 11.687µs (SLO: <20.000µs 📉 -41.6%) vs baseline: +1.3%

Memory: ✅ 35.566MB (SLO: <38.000MB -6.4%) vs baseline: +4.5%

✅ wsgi_valid_headers_all

Time: ✅ 6.544µs (SLO: <10.000µs 📉 -34.6%) vs baseline: -0.9%

Memory: ✅ 35.783MB (SLO: <38.000MB -5.8%) vs baseline: +5.0%

✅ wsgi_valid_headers_basic

Time: ✅ 6.138µs (SLO: <10.000µs 📉 -38.6%) vs baseline: +0.8%

Memory: ✅ 35.783MB (SLO: <38.000MB -5.8%) vs baseline: +5.6%

✅ httppropagationinject - 16/16

✅ ids_only

Time: ✅ 21.839µs (SLO: <30.000µs 📉 -27.2%) vs baseline: +4.2%

Memory: ✅ 35.566MB (SLO: <38.000MB -6.4%) vs baseline: +5.6%

✅ with_all

Time: ✅ 27.780µs (SLO: <40.000µs 📉 -30.5%) vs baseline: +0.5%

Memory: ✅ 35.291MB (SLO: <38.000MB -7.1%) vs baseline: +5.3%

✅ with_dd_origin

Time: ✅ 24.442µs (SLO: <30.000µs 📉 -18.5%) vs baseline: ~same

Memory: ✅ 35.370MB (SLO: <38.000MB -6.9%) vs baseline: +5.0%

✅ with_priority_and_origin

Time: ✅ 23.761µs (SLO: <40.000µs 📉 -40.6%) vs baseline: -1.4%

Memory: ✅ 35.566MB (SLO: <38.000MB -6.4%) vs baseline: +5.7%

✅ with_sampling_priority

Time: ✅ 20.825µs (SLO: <30.000µs 📉 -30.6%) vs baseline: +0.3%

Memory: ✅ 35.763MB (SLO: <38.000MB -5.9%) vs baseline: +6.0%

✅ with_tags

Time: ✅ 25.898µs (SLO: <40.000µs 📉 -35.3%) vs baseline: +0.9%

Memory: ✅ 35.232MB (SLO: <38.000MB -7.3%) vs baseline: +4.7%

✅ with_tags_invalid

Time: ✅ 27.403µs (SLO: <40.000µs 📉 -31.5%) vs baseline: +0.5%

Memory: ✅ 35.330MB (SLO: <38.000MB -7.0%) vs baseline: +5.0%

✅ with_tags_max_size

Time: ✅ 26.279µs (SLO: <40.000µs 📉 -34.3%) vs baseline: +0.4%

Memory: ✅ 35.350MB (SLO: <38.000MB -7.0%) vs baseline: +5.0%

✅ iast_aspects - 40/40

✅ re_expand_aspect

Time: ✅ 3.714ms (SLO: <4.880ms 📉 -23.9%) vs baseline: +6.5%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.6%

✅ re_expand_noaspect

Time: ✅ 3.469ms (SLO: <4.620ms 📉 -24.9%) vs baseline: -0.1%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.8%

✅ re_findall_aspect

Time: ✅ 335.951µs (SLO: <450.000µs 📉 -25.3%) vs baseline: -1.0%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.6%

✅ re_findall_noaspect

Time: ✅ 319.286µs (SLO: <430.000µs 📉 -25.7%) vs baseline: -0.4%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.9%

✅ re_finditer_aspect

Time: ✅ 449.493µs (SLO: <590.000µs 📉 -23.8%) vs baseline: -0.4%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.4%

✅ re_finditer_noaspect

Time: ✅ 325.610µs (SLO: <440.000µs 📉 -26.0%) vs baseline: +0.6%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.5%

✅ re_fullmatch_aspect

Time: ✅ 273.656µs (SLO: <360.000µs 📉 -24.0%) vs baseline: -0.6%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +6.0%

✅ re_fullmatch_noaspect

Time: ✅ 299.930µs (SLO: <400.000µs 📉 -25.0%) vs baseline: -2.1%

Memory: ✅ 43.018MB (SLO: <46.000MB -6.5%) vs baseline: +5.6%

✅ re_group_aspect

Time: ✅ 472.610µs (SLO: <630.000µs 📉 -25.0%) vs baseline: -1.0%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +6.0%

✅ re_group_noaspect

Time: ✅ 477.451µs (SLO: <640.000µs 📉 -25.4%) vs baseline: -1.3%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +5.7%

✅ re_groups_aspect

Time: ✅ 485.922µs (SLO: <650.000µs 📉 -25.2%) vs baseline: -1.8%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.9%

✅ re_groups_noaspect

Time: ✅ 490.888µs (SLO: <650.000µs 📉 -24.5%) vs baseline: -1.8%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.2%

✅ re_match_aspect

Time: ✅ 273.885µs (SLO: <370.000µs 📉 -26.0%) vs baseline: -3.2%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.6%

✅ re_match_noaspect

Time: ✅ 302.715µs (SLO: <410.000µs 📉 -26.2%) vs baseline: -1.7%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.9%

✅ re_search_aspect

Time: ✅ 266.543µs (SLO: <350.000µs 📉 -23.8%) vs baseline: +1.3%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.7%

✅ re_search_noaspect

Time: ✅ 285.781µs (SLO: <380.000µs 📉 -24.8%) vs baseline: -0.9%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.5%

✅ re_sub_aspect

Time: ✅ 349.144µs (SLO: <460.000µs 📉 -24.1%) vs baseline: -1.0%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +6.0%

✅ re_sub_noaspect

Time: ✅ 390.483µs (SLO: <520.000µs 📉 -24.9%) vs baseline: ~same

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.5%

✅ re_subn_aspect

Time: ✅ 374.008µs (SLO: <490.000µs 📉 -23.7%) vs baseline: +0.6%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.4%

✅ re_subn_noaspect

Time: ✅ 405.333µs (SLO: <530.000µs 📉 -23.5%) vs baseline: -0.1%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.5%

✅ iastaspects - 117/117

✅ add_aspect

Time: ✅ 111.308µs (SLO: <130.000µs 📉 -14.4%) vs baseline: +9.0%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.5%

✅ add_inplace_aspect

Time: ✅ 106.085µs (SLO: <130.000µs 📉 -18.4%) vs baseline: +4.0%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ add_inplace_noaspect

Time: ✅ 28.353µs (SLO: <40.000µs 📉 -29.1%) vs baseline: -1.2%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.1%

✅ add_noaspect

Time: ✅ 48.856µs (SLO: <70.000µs 📉 -30.2%) vs baseline: -0.2%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +4.8%

✅ bytearray_aspect

Time: ✅ 254.018µs (SLO: <400.000µs 📉 -36.5%) vs baseline: +2.2%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ bytearray_extend_aspect

Time: ✅ 640.515µs (SLO: <800.000µs 📉 -19.9%) vs baseline: -1.3%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ bytearray_extend_noaspect

Time: ✅ 266.744µs (SLO: <400.000µs 📉 -33.3%) vs baseline: +1.0%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.9%

✅ bytearray_noaspect

Time: ✅ 141.644µs (SLO: <300.000µs 📉 -52.8%) vs baseline: +2.7%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ bytes_aspect

Time: ✅ 217.955µs (SLO: <300.000µs 📉 -27.3%) vs baseline: +0.1%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ bytes_noaspect

Time: ✅ 133.418µs (SLO: <200.000µs 📉 -33.3%) vs baseline: -1.1%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.9%

✅ bytesio_aspect

Time: ✅ 3.903ms (SLO: <5.000ms 📉 -21.9%) vs baseline: +1.9%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.0%

✅ bytesio_noaspect

Time: ✅ 314.087µs (SLO: <420.000µs 📉 -25.2%) vs baseline: +0.7%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +4.9%

✅ capitalize_aspect

Time: ✅ 88.378µs (SLO: <300.000µs 📉 -70.5%) vs baseline: -0.2%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ capitalize_noaspect

Time: ✅ 253.299µs (SLO: <300.000µs 📉 -15.6%) vs baseline: +3.2%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ casefold_aspect

Time: ✅ 91.387µs (SLO: <500.000µs 📉 -81.7%) vs baseline: +3.0%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +4.8%

✅ casefold_noaspect

Time: ✅ 317.487µs (SLO: <500.000µs 📉 -36.5%) vs baseline: +5.6%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ decode_aspect

Time: ✅ 87.235µs (SLO: <100.000µs 📉 -12.8%) vs baseline: -0.2%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +4.9%

✅ decode_noaspect

Time: ✅ 152.605µs (SLO: <210.000µs 📉 -27.3%) vs baseline: ~same

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ encode_aspect

Time: ✅ 85.741µs (SLO: <200.000µs 📉 -57.1%) vs baseline: +0.5%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.1%

✅ encode_noaspect

Time: ✅ 139.383µs (SLO: <200.000µs 📉 -30.3%) vs baseline: -1.6%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.9%

✅ format_aspect

Time: ✅ 14.704ms (SLO: <19.200ms 📉 -23.4%) vs baseline: ~same

Memory: ✅ 43.136MB (SLO: <46.000MB -6.2%) vs baseline: +5.0%

✅ format_map_aspect

Time: ✅ 16.480ms (SLO: <21.500ms 📉 -23.4%) vs baseline: ~same

Memory: ✅ 43.175MB (SLO: <46.000MB -6.1%) vs baseline: +5.0%

✅ format_map_noaspect

Time: ✅ 373.719µs (SLO: <500.000µs 📉 -25.3%) vs baseline: +0.4%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ format_noaspect

Time: ✅ 314.440µs (SLO: <500.000µs 📉 -37.1%) vs baseline: +3.7%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ index_aspect

Time: ✅ 126.147µs (SLO: <300.000µs 📉 -58.0%) vs baseline: +3.1%

✅ index_noaspect

Time: ✅ 40.619µs (SLO: <300.000µs 📉 -86.5%) vs baseline: +0.2%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +5.0%

✅ join_aspect

Time: ✅ 214.014µs (SLO: <300.000µs 📉 -28.7%) vs baseline: -0.7%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ join_noaspect

Time: ✅ 143.464µs (SLO: <300.000µs 📉 -52.2%) vs baseline: -0.3%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.6%

✅ ljust_aspect

Time: ✅ 505.282µs (SLO: <700.000µs 📉 -27.8%) vs baseline: -0.3%

Memory: ✅ 43.018MB (SLO: <46.000MB -6.5%) vs baseline: +4.8%

✅ ljust_noaspect

Time: ✅ 265.570µs (SLO: <300.000µs 📉 -11.5%) vs baseline: +3.5%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ lower_aspect

Time: ✅ 298.878µs (SLO: <500.000µs 📉 -40.2%) vs baseline: +1.5%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ lower_noaspect

Time: ✅ 235.255µs (SLO: <300.000µs 📉 -21.6%) vs baseline: +2.7%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.0%

✅ lstrip_aspect

Time: ✅ 0.272ms (SLO: <3.000ms 📉 -90.9%) vs baseline: -1.9%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.6%

✅ lstrip_noaspect

Time: ✅ 0.176ms (SLO: <3.000ms 📉 -94.1%) vs baseline: +0.4%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +5.0%

✅ modulo_aspect

Time: ✅ 14.328ms (SLO: <18.750ms 📉 -23.6%) vs baseline: -0.4%

Memory: ✅ 43.096MB (SLO: <46.000MB -6.3%) vs baseline: +5.0%

✅ modulo_aspect_for_bytearray_bytearray

Time: ✅ 14.890ms (SLO: <19.350ms 📉 -23.1%) vs baseline: +0.3%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +4.6%

✅ modulo_aspect_for_bytes

Time: ✅ 14.456ms (SLO: <18.900ms 📉 -23.5%) vs baseline: -0.1%

Memory: ✅ 43.018MB (SLO: <46.000MB -6.5%) vs baseline: +4.9%

✅ modulo_aspect_for_bytes_bytearray

Time: ✅ 14.654ms (SLO: <19.150ms 📉 -23.5%) vs baseline: +0.1%

Memory: ✅ 43.077MB (SLO: <46.000MB -6.4%) vs baseline: +4.7%

✅ modulo_noaspect

Time: ✅ 0.379ms (SLO: <3.000ms 📉 -87.4%) vs baseline: +7.2%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ replace_aspect

Time: ✅ 18.440ms (SLO: <24.000ms 📉 -23.2%) vs baseline: ~same

Memory: ✅ 43.136MB (SLO: <46.000MB -6.2%) vs baseline: +5.0%

✅ replace_noaspect

Time: ✅ 282.467µs (SLO: <300.000µs -5.8%) vs baseline: ~same

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ repr_aspect

Time: ✅ 308.116µs (SLO: <420.000µs 📉 -26.6%) vs baseline: -1.8%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ repr_noaspect

Time: ✅ 46.450µs (SLO: <90.000µs 📉 -48.4%) vs baseline: -0.3%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +4.9%

✅ rstrip_aspect

Time: ✅ 383.642µs (SLO: <500.000µs 📉 -23.3%) vs baseline: -0.7%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ rstrip_noaspect

Time: ✅ 189.271µs (SLO: <300.000µs 📉 -36.9%) vs baseline: +4.5%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ slice_aspect

Time: ✅ 186.393µs (SLO: <300.000µs 📉 -37.9%) vs baseline: +2.6%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ slice_noaspect

Time: ✅ 54.098µs (SLO: <90.000µs 📉 -39.9%) vs baseline: +0.7%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ stringio_aspect

Time: ✅ 3.945ms (SLO: <5.000ms 📉 -21.1%) vs baseline: +1.5%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ stringio_noaspect

Time: ✅ 344.595µs (SLO: <500.000µs 📉 -31.1%) vs baseline: -0.5%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +4.9%

✅ strip_aspect

Time: ✅ 267.771µs (SLO: <350.000µs 📉 -23.5%) vs baseline: -1.7%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +4.8%

✅ strip_noaspect

Time: ✅ 174.677µs (SLO: <240.000µs 📉 -27.2%) vs baseline: -0.6%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.9%

✅ swapcase_aspect

Time: ✅ 341.149µs (SLO: <500.000µs 📉 -31.8%) vs baseline: +3.9%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ swapcase_noaspect

Time: ✅ 272.860µs (SLO: <400.000µs 📉 -31.8%) vs baseline: +1.8%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ title_aspect

Time: ✅ 327.829µs (SLO: <500.000µs 📉 -34.4%) vs baseline: +2.6%

Memory: ✅ 42.900MB (SLO: <46.000MB -6.7%) vs baseline: +4.9%

✅ title_noaspect

Time: ✅ 261.943µs (SLO: <400.000µs 📉 -34.5%) vs baseline: +4.0%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ translate_aspect

Time: ✅ 493.685µs (SLO: <700.000µs 📉 -29.5%) vs baseline: +1.3%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +4.6%

✅ translate_noaspect

Time: ✅ 423.272µs (SLO: <500.000µs 📉 -15.3%) vs baseline: -0.4%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +5.3%

✅ upper_aspect

Time: ✅ 301.046µs (SLO: <500.000µs 📉 -39.8%) vs baseline: +3.4%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.0%

✅ upper_noaspect

Time: ✅ 233.769µs (SLO: <400.000µs 📉 -41.6%) vs baseline: +2.5%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.8%

✅ iastpropagation - 8/8

✅ no-propagation

Time: ✅ 48.390µs (SLO: <60.000µs 📉 -19.4%) vs baseline: +0.2%

Memory: ✅ 39.007MB (SLO: <42.000MB -7.1%) vs baseline: +4.8%

✅ propagation_enabled

Time: ✅ 134.426µs (SLO: <190.000µs 📉 -29.2%) vs baseline: +0.4%

Memory: ✅ 39.066MB (SLO: <42.000MB -7.0%) vs baseline: +4.9%

✅ propagation_enabled_100

Time: ✅ 1.545ms (SLO: <2.300ms 📉 -32.8%) vs baseline: -1.6%

Memory: ✅ 39.027MB (SLO: <42.000MB -7.1%) vs baseline: +4.9%

✅ propagation_enabled_1000

Time: ✅ 29.048ms (SLO: <34.550ms 📉 -15.9%) vs baseline: -1.3%

Memory: ✅ 38.987MB (SLO: <42.000MB -7.2%) vs baseline: +4.6%

✅ otelsdkspan - 24/24

✅ add-event

Time: ✅ 40.514ms (SLO: <42.000ms -3.5%) vs baseline: +0.2%

Memory: ✅ 38.004MB (SLO: <40.750MB -6.7%) vs baseline: +4.6%

✅ add-link

Time: ✅ 36.444ms (SLO: <38.550ms -5.5%) vs baseline: +1.0%

Memory: ✅ 38.103MB (SLO: <40.750MB -6.5%) vs baseline: +4.9%

✅ add-metrics

Time: ✅ 219.442ms (SLO: <232.000ms -5.4%) vs baseline: +1.2%

Memory: ✅ 38.044MB (SLO: <40.750MB -6.6%) vs baseline: +4.8%

✅ add-tags

Time: ✅ 211.609ms (SLO: <221.600ms -4.5%) vs baseline: +1.3%

Memory: ✅ 37.945MB (SLO: <40.750MB -6.9%) vs baseline: +4.6%

✅ get-context

Time: ✅ 29.023ms (SLO: <31.300ms -7.3%) vs baseline: ~same

Memory: ✅ 38.024MB (SLO: <40.750MB -6.7%) vs baseline: +5.0%

✅ is-recording

Time: ✅ 29.262ms (SLO: <31.000ms -5.6%) vs baseline: +0.6%

Memory: ✅ 38.024MB (SLO: <40.750MB -6.7%) vs baseline: +4.5%

✅ record-exception

Time: ✅ 63.267ms (SLO: <65.850ms -3.9%) vs baseline: -0.1%

Memory: ✅ 38.083MB (SLO: <40.750MB -6.5%) vs baseline: +5.0%

✅ set-status

Time: ✅ 31.821ms (SLO: <34.150ms -6.8%) vs baseline: ~same

Memory: ✅ 38.142MB (SLO: <40.750MB -6.4%) vs baseline: +5.0%

✅ start

Time: ✅ 29.245ms (SLO: <30.150ms -3.0%) vs baseline: +1.7%

Memory: ✅ 38.063MB (SLO: <40.750MB -6.6%) vs baseline: +5.1%

✅ start-finish

Time: ✅ 34.015ms (SLO: <35.350ms -3.8%) vs baseline: +0.4%

Memory: ✅ 38.004MB (SLO: <40.750MB -6.7%) vs baseline: +4.9%

✅ start-finish-telemetry

Time: ✅ 33.864ms (SLO: <35.450ms -4.5%) vs baseline: -0.5%

Memory: ✅ 38.142MB (SLO: <40.750MB -6.4%) vs baseline: +5.2%

✅ update-name

Time: ✅ 31.129ms (SLO: <33.400ms -6.8%) vs baseline: +0.3%

Memory: ✅ 38.063MB (SLO: <40.750MB -6.6%) vs baseline: +4.6%

✅ otelspan - 22/22

✅ add-event

Time: ✅ 43.211ms (SLO: <47.150ms -8.4%) vs baseline: ~same

Memory: ✅ 40.465MB (SLO: <47.000MB 📉 -13.9%) vs baseline: +5.0%

✅ add-metrics

Time: ✅ 259.914ms (SLO: <344.800ms 📉 -24.6%) vs baseline: -0.8%

Memory: ✅ 44.945MB (SLO: <47.500MB -5.4%) vs baseline: +5.8%

✅ add-tags

Time: ✅ 317.131ms (SLO: <330.000ms -3.9%) vs baseline: ~same

Memory: ✅ 44.890MB (SLO: <47.500MB -5.5%) vs baseline: +5.2%

✅ get-context

Time: ✅ 83.187ms (SLO: <92.350ms -9.9%) vs baseline: +0.3%

Memory: ✅ 40.737MB (SLO: <46.500MB 📉 -12.4%) vs baseline: +5.1%

✅ is-recording

Time: ✅ 39.564ms (SLO: <44.500ms 📉 -11.1%) vs baseline: +0.2%

Memory: ✅ 40.388MB (SLO: <47.500MB 📉 -15.0%) vs baseline: +5.3%

✅ record-exception

Time: ✅ 62.058ms (SLO: <67.650ms -8.3%) vs baseline: ~same

Memory: ✅ 40.927MB (SLO: <47.000MB 📉 -12.9%) vs baseline: +5.3%

✅ set-status

Time: ✅ 46.186ms (SLO: <50.400ms -8.4%) vs baseline: +0.5%

Memory: ✅ 40.387MB (SLO: <47.000MB 📉 -14.1%) vs baseline: +5.5%

✅ start

Time: ✅ 40.106ms (SLO: <43.450ms -7.7%) vs baseline: +4.0%

Memory: ✅ 40.292MB (SLO: <47.000MB 📉 -14.3%) vs baseline: +5.2%

✅ start-finish

Time: ✅ 87.207ms (SLO: <90.000ms -3.1%) vs baseline: +0.3%

Memory: ✅ 37.788MB (SLO: <46.500MB 📉 -18.7%) vs baseline: +5.3%

✅ start-finish-telemetry

Time: ✅ 88.509ms (SLO: <91.000ms -2.7%) vs baseline: -0.2%

Memory: ✅ 37.749MB (SLO: <46.500MB 📉 -18.8%) vs baseline: +4.8%

✅ update-name

Time: ✅ 40.279ms (SLO: <45.150ms 📉 -10.8%) vs baseline: +0.6%

Memory: ✅ 40.305MB (SLO: <47.000MB 📉 -14.2%) vs baseline: +5.1%

✅ packagespackageforrootmodulemapping - 4/4

✅ cache_off

Time: ✅ 344.026ms (SLO: <354.300ms -2.9%) vs baseline: -0.6%

Memory: ✅ 41.808MB (SLO: <46.000MB -9.1%) vs baseline: +5.1%

✅ cache_on

Time: ✅ 0.383µs (SLO: <10.000µs 📉 -96.2%) vs baseline: -0.8%

Memory: ✅ 40.367MB (SLO: <46.000MB 📉 -12.2%) vs baseline: +4.3%

✅ ratelimiter - 12/12

✅ defaults

Time: ✅ 2.367µs (SLO: <10.000µs 📉 -76.3%) vs baseline: +0.2%

Memory: ✅ 35.527MB (SLO: <38.000MB -6.5%) vs baseline: +4.5%

✅ high_rate_limit

Time: ✅ 2.435µs (SLO: <10.000µs 📉 -75.6%) vs baseline: +0.4%

Memory: ✅ 35.625MB (SLO: <38.000MB -6.2%) vs baseline: +4.9%

✅ long_window

Time: ✅ 2.366µs (SLO: <10.000µs 📉 -76.3%) vs baseline: -0.2%

Memory: ✅ 35.527MB (SLO: <38.000MB -6.5%) vs baseline: +4.6%

✅ low_rate_limit

Time: ✅ 2.387µs (SLO: <10.000µs 📉 -76.1%) vs baseline: +0.4%

Memory: ✅ 35.468MB (SLO: <38.000MB -6.7%) vs baseline: +4.5%

✅ no_rate_limit

Time: ✅ 0.835µs (SLO: <10.000µs 📉 -91.6%) vs baseline: +0.6%

Memory: ✅ 35.468MB (SLO: <38.000MB -6.7%) vs baseline: +4.6%

✅ short_window

Time: ✅ 2.505µs (SLO: <10.000µs 📉 -75.0%) vs baseline: ~same

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +4.7%

✅ recursivecomputation - 8/8

✅ deep

Time: ✅ 309.820ms (SLO: <320.950ms -3.5%) vs baseline: ~same

Memory: ✅ 36.471MB (SLO: <38.750MB -5.9%) vs baseline: +5.4%

✅ deep-profiled

Time: ✅ 326.418ms (SLO: <359.150ms -9.1%) vs baseline: +0.2%

Memory: ✅ 40.462MB (SLO: <46.000MB 📉 -12.0%) vs baseline: +4.5%

✅ medium

Time: ✅ 7.152ms (SLO: <7.400ms -3.3%) vs baseline: ~same

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +6.1%

✅ shallow

Time: ✅ 0.985ms (SLO: <1.050ms -6.2%) vs baseline: +1.7%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +6.2%

✅ samplingrules - 8/8

✅ average_match

Time: ✅ 146.180µs (SLO: <290.000µs 📉 -49.6%) vs baseline: -2.8%

Memory: ✅ 35.252MB (SLO: <38.000MB -7.2%) vs baseline: +4.7%

✅ high_match

Time: ✅ 190.668µs (SLO: <480.000µs 📉 -60.3%) vs baseline: -3.8%

Memory: ✅ 35.271MB (SLO: <38.000MB -7.2%) vs baseline: +5.0%

✅ low_match

Time: ✅ 99.677µs (SLO: <120.000µs 📉 -16.9%) vs baseline: -0.7%

Memory: ✅ 732.474MB (SLO: <780.000MB -6.1%) vs baseline: +4.9%

✅ very_low_match

Time: ✅ 2.864ms (SLO: <8.500ms 📉 -66.3%) vs baseline: -1.9%

Memory: ✅ 79.896MB (SLO: <85.000MB -6.0%) vs baseline: +5.0%

✅ sethttpmeta - 32/32

✅ all-disabled

Time: ✅ 10.513µs (SLO: <20.000µs 📉 -47.4%) vs baseline: +0.2%

Memory: ✅ 35.999MB (SLO: <38.750MB -7.1%) vs baseline: +4.6%

✅ all-enabled

Time: ✅ 40.902µs (SLO: <50.000µs 📉 -18.2%) vs baseline: +1.5%

Memory: ✅ 36.137MB (SLO: <38.750MB -6.7%) vs baseline: +5.1%

✅ collectipvariant_exists

Time: ✅ 40.684µs (SLO: <50.000µs 📉 -18.6%) vs baseline: -0.9%

Memory: ✅ 36.176MB (SLO: <38.750MB -6.6%) vs baseline: +5.4%

✅ no-collectipvariant

Time: ✅ 40.184µs (SLO: <50.000µs 📉 -19.6%) vs baseline: -0.3%

Memory: ✅ 36.078MB (SLO: <38.750MB -6.9%) vs baseline: +4.6%

✅ no-useragentvariant

Time: ✅ 38.701µs (SLO: <50.000µs 📉 -22.6%) vs baseline: -0.4%

Memory: ✅ 36.058MB (SLO: <38.750MB -6.9%) vs baseline: +5.0%

✅ obfuscation-no-query

Time: ✅ 40.378µs (SLO: <50.000µs 📉 -19.2%) vs baseline: -1.1%

Memory: ✅ 36.058MB (SLO: <38.750MB -6.9%) vs baseline: +4.8%

✅ obfuscation-regular-case-explicit-query

Time: ✅ 76.009µs (SLO: <90.000µs 📉 -15.5%) vs baseline: ~same

Memory: ✅ 36.196MB (SLO: <38.750MB -6.6%) vs baseline: +5.5%

✅ obfuscation-regular-case-implicit-query

Time: ✅ 76.533µs (SLO: <90.000µs 📉 -15.0%) vs baseline: -0.2%

Memory: ✅ 36.097MB (SLO: <38.750MB -6.8%) vs baseline: +4.9%

✅ obfuscation-send-querystring-disabled

Time: ✅ 153.966µs (SLO: <170.000µs -9.4%) vs baseline: -0.4%

Memory: ✅ 35.940MB (SLO: <38.750MB -7.3%) vs baseline: +4.2%

✅ obfuscation-worst-case-explicit-query

Time: ✅ 148.994µs (SLO: <160.000µs -6.9%) vs baseline: -0.2%

Memory: ✅ 36.215MB (SLO: <38.750MB -6.5%) vs baseline: +5.3%

✅ obfuscation-worst-case-implicit-query

Time: ✅ 155.036µs (SLO: <170.000µs -8.8%) vs baseline: +0.1%

Memory: ✅ 36.274MB (SLO: <38.750MB -6.4%) vs baseline: +5.3%

✅ useragentvariant_exists_1

Time: ✅ 39.535µs (SLO: <50.000µs 📉 -20.9%) vs baseline: -0.3%

Memory: ✅ 36.058MB (SLO: <38.750MB -6.9%) vs baseline: +4.7%

✅ useragentvariant_exists_2

Time: ✅ 40.599µs (SLO: <50.000µs 📉 -18.8%) vs baseline: -0.3%

Memory: ✅ 36.078MB (SLO: <38.750MB -6.9%) vs baseline: +4.7%

✅ useragentvariant_exists_3

Time: ✅ 40.016µs (SLO: <50.000µs 📉 -20.0%) vs baseline: +0.1%

Memory: ✅ 36.097MB (SLO: <38.750MB -6.8%) vs baseline: +5.0%

✅ useragentvariant_not_exists_1

Time: ✅ 39.672µs (SLO: <50.000µs 📉 -20.7%) vs baseline: +0.1%

Memory: ✅ 36.117MB (SLO: <38.750MB -6.8%) vs baseline: +5.0%

✅ useragentvariant_not_exists_2

Time: ✅ 39.599µs (SLO: <50.000µs 📉 -20.8%) vs baseline: -0.2%

Memory: ✅ 36.117MB (SLO: <38.750MB -6.8%) vs baseline: +4.7%

✅ span - 26/26

✅ add-event

Time: ✅ 20.251ms (SLO: <22.500ms -10.0%) vs baseline: +0.6%

Memory: ✅ 37.607MB (SLO: <53.000MB 📉 -29.0%) vs baseline: +5.0%

✅ add-metrics

Time: ✅ 90.095ms (SLO: <93.500ms -3.6%) vs baseline: +0.7%

Memory: ✅ 41.956MB (SLO: <53.000MB 📉 -20.8%) vs baseline: +4.7%

✅ add-tags

Time: ✅ 143.931ms (SLO: <155.000ms -7.1%) vs baseline: +0.5%

Memory: ✅ 41.941MB (SLO: <53.000MB 📉 -20.9%) vs baseline: +4.7%

✅ get-context

Time: ✅ 18.248ms (SLO: <20.500ms 📉 -11.0%) vs baseline: ~same

Memory: ✅ 37.552MB (SLO: <53.000MB 📉 -29.1%) vs baseline: +4.5%

✅ is-recording

Time: ✅ 18.622ms (SLO: <20.500ms -9.2%) vs baseline: ~same

Memory: ✅ 37.631MB (SLO: <53.000MB 📉 -29.0%) vs baseline: +4.9%

✅ record-exception

Time: ✅ 40.025ms (SLO: <41.000ms -2.4%) vs baseline: +1.1%

Memory: ✅ 37.952MB (SLO: <53.000MB 📉 -28.4%) vs baseline: +4.4%

✅ set-status

Time: ✅ 20.006ms (SLO: <22.000ms -9.1%) vs baseline: -0.4%

Memory: ✅ 37.591MB (SLO: <53.000MB 📉 -29.1%) vs baseline: +4.7%

✅ start

Time: ✅ 18.840ms (SLO: <20.500ms -8.1%) vs baseline: +4.1%

Memory: ✅ 37.591MB (SLO: <53.000MB 📉 -29.1%) vs baseline: +4.8%

✅ start-finish

Time: ✅ 54.106ms (SLO: <56.000ms -3.4%) vs baseline: -0.2%

Memory: ✅ 35.252MB (SLO: <38.000MB -7.2%) vs baseline: +4.9%

✅ start-finish-telemetry

Time: ✅ 55.387ms (SLO: <58.000ms -4.5%) vs baseline: ~same

Memory: ✅ 35.330MB (SLO: <38.000MB -7.0%) vs baseline: +4.9%

✅ start-finish-traceid128

Time: ✅ 57.530ms (SLO: <60.000ms -4.1%) vs baseline: +0.3%

Memory: ✅ 35.330MB (SLO: <38.000MB -7.0%) vs baseline: +4.9%

✅ start-traceid128

Time: ✅ 18.601ms (SLO: <22.500ms 📉 -17.3%) vs baseline: +0.2%

Memory: ✅ 37.584MB (SLO: <53.000MB 📉 -29.1%) vs baseline: +4.6%

✅ update-name

Time: ✅ 18.555ms (SLO: <22.000ms 📉 -15.7%) vs baseline: +0.2%

Memory: ✅ 37.552MB (SLO: <53.000MB 📉 -29.1%) vs baseline: +4.6%

ℹ️ Scenarios Missing SLO Configuration (26 scenarios)

The following scenarios exist in candidate data but have no SLO thresholds configured:

  • coreapiscenario-core_dispatch_listeners
  • coreapiscenario-core_dispatch_no_listeners
  • coreapiscenario-core_dispatch_with_results_listeners
  • coreapiscenario-core_dispatch_with_results_no_listeners
  • djangosimple-baseline
  • errortrackingdjangosimple-baseline
  • errortrackingflasksqli-baseline
  • flasksimple-baseline
  • flasksqli-baseline
  • sethttpmeta-obfuscation-disabled
  • startup-baseline
  • startup-baseline_django
  • startup-baseline_flask
  • startup-ddtrace_run
  • startup-ddtrace_run_appsec
  • startup-ddtrace_run_profiling
  • startup-ddtrace_run_runtime_metrics
  • startup-ddtrace_run_send_span
  • startup-ddtrace_run_telemetry_disabled
  • startup-ddtrace_run_telemetry_enabled
  • startup-import_ddtrace
  • startup-import_ddtrace_auto
  • startup-import_ddtrace_auto_django
  • startup-import_ddtrace_auto_flask
  • startup-import_ddtrace_django
  • startup-import_ddtrace_flask

@VianneyRuhlmann VianneyRuhlmann changed the title fix(forksafe): delay fork hook on celery daemonization fix(celery): delay fork hook on celery daemonization Jan 20, 2026
@VianneyRuhlmann VianneyRuhlmann changed the title fix(celery): delay fork hook on celery daemonization fix(celery): stop native runtime before celery daemonization Jan 20, 2026
@VianneyRuhlmann VianneyRuhlmann marked this pull request as ready for review January 20, 2026 12:50
@VianneyRuhlmann VianneyRuhlmann requested review from a team as code owners January 20, 2026 12:50
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brettlangdon
brettlangdon reviewed Jan 20, 2026
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are we able to create a regression test for this?

is it a race condition or generally.. yeah... going to happen always?

if it is a race condition, I wonder if we can patch close_open_fds to add a sleep to it to sort of given time for the native writer to spin up and make the /info call ?

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VianneyRuhlmann commented Jan 21, 2026 •
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are we able to create a regression test for this?

is it a race condition or generally.. yeah... going to happen always?

if it is a race condition, I wonder if we can patch close_open_fds to add a sleep to it to sort of given time for the native writer to spin up and make the /info call ?

Is it fine to start the celery process with popen in the test or should I find a way to call celery from the python test ?

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brettlangdon commented Jan 21, 2026

@VianneyRuhlmann

Is it fine to start the celery process with popen in the test or should I find a way to call celery from the python test ?

Yeah, totally fine, starting a beat subprocess in a test would be totally fine. Just need to figure out the right mechanism for knowing if it crashed or not, which could be giving it a task to process or just checking that the app doesn't crash on boot or w.e.

@VianneyRuhlmann VianneyRuhlmann force-pushed the vianney/fix-celery-panic branch from e17b78a to 8fb21a5 Compare January 28, 2026 13:11
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github-actions bot commented Jan 28, 2026

This change is marked for backport to 4.3 and it does not conflict with that branch.
The command used to test backporting was

git checkout 4.3 && git cherry-pick -x --mainline 1 21202a27ffe4e3f6f6cf315d68ee30235d3fe475

brettlangdon
brettlangdon approved these changes Jan 29, 2026
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some nits, but otherwise lgtm.

@VianneyRuhlmann VianneyRuhlmann merged commit 4889a66 into main Jan 30, 2026
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@VianneyRuhlmann VianneyRuhlmann deleted the vianney/fix-celery-panic branch January 30, 2026 13:12
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github-actions bot commented Jan 30, 2026

This change is marked for backport to 4.3 and it does not conflict with that branch.
The command used to test backporting was

git checkout 4.3 && git cherry-pick -x --mainline 1 4889a66f14526a91f452aa390d850e5fa10cbfaf

github-actions bot added a commit that referenced this pull request Jan 30, 2026
@github-actions @VianneyRuhlmann
fix(celery): stop native runtime before celery daemonization (#16050)
22f3da1 
## Description

When celery starts beat (celery's scheduler) it creates a new process by
forking and then closing all file descriptors. This causes panics in the
rust tokio runtime as this runtime is created in `after_fork` hooks and
manipulates epoll file descriptors (which are closed by celery). We fix
the issue by shutting down the tokio runtime before calling
`close_open_fds` and starting it again afterwards.

### Note
This is done by considering `close_open_fds` as fork and calling all
fork hooks, this is necessary since any tokio runtime will encounter
this issue otherwise (e.g. NativeWriter, [profile
manager](DataDog/libdatadog#1464)). This doesn't
cause any problem for existing fork hooks however this could cause
unexpected behavior with future hooks. The ongoing work to share a
single tokio native runtime for native code should allow us to refactor
this to only shut down this runtime.

## Testing

Run any celery app with `celery -A celery_app worker --beat` or just the
beat worker `celery beat --detached`. No beat traces sent without the
fix, works with the fix. A regression test has been added to check the
absence of panic in the beat process.

## Risks

None

## Additional Notes

See [this
page](https://datadoghq.atlassian.net/wiki/spaces/VP/pages/6035472438/Investigation+Summary+of+GWCP+Crash+with+dd-trace-py+and+Celery+Integration+Issues)
for details on the bug.

---------

Co-authored-by: Brett Langdon <[email protected]>
Co-authored-by: Emmett Butler <[email protected]>
(cherry picked from commit 4889a66)

Co-authored-by: vianney <[email protected]>
@dd-octo-sts dd-octo-sts bot mentioned this pull request Jan 30, 2026
Merged
brettlangdon pushed a commit that referenced this pull request Jan 30, 2026
@dd-octo-sts @github-actions @VianneyRuhlmann
fix(celery): stop native runtime before celery daemonization [backpor…
a2ddd98 
…t 4.3] (#16283)

Backport #16050 to 4.3

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: vianney <[email protected]>
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@KowalskiThomas KowalskiThomas Awaiting requested review from KowalskiThomas KowalskiThomas is a code owner automatically assigned from DataDog/apm-python

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@VianneyRuhlmann @brettlangdon @emmettbutler