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chore: disable native writer #15341

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@brettlangdon brettlangdon commented Nov 19, 2025 •
edited by emmettbutler
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This change disables the native writer feature, which seems to be related to some decreased test suite reliability on the main branch.

@brettlangdon brettlangdon added changelog/no-changelog A changelog entry is not required for this PR. backport 4.0 labels Nov 19, 2025
@brettlangdon brettlangdon requested review from a team as code owners November 19, 2025 15:33
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github-actions bot commented Nov 19, 2025 •
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CODEOWNERS have been resolved as:

ddtrace/internal/settings/_config.py                                    @DataDog/python-guild @DataDog/apm-sdk-capabilities-python
tests/telemetry/test_writer.py                                          @DataDog/apm-python

@brettlangdon brettlangdon force-pushed the brettlangdon/native.writer.off branch from 7ef610e to e5fa427 Compare November 19, 2025 15:57
@brettlangdon brettlangdon requested a review from a team as a code owner November 19, 2025 15:57
@brettlangdon brettlangdon requested a review from wantsui November 19, 2025 15:57
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Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 248 ± 4 ms.

The average import time from base is: 259 ± 3 ms.

The import time difference between this PR and base is: -10.5 ± 0.2 ms.

Import time breakdown

The following import paths have grown:

ddtrace.auto 2.612 ms (1.05%)
ddtrace.bootstrap.sitecustomize 2.612 ms (1.05%)
ddtrace.bootstrap.preload 1.555 ms (0.63%)
multiprocessing 0.909 ms (0.37%)
multiprocessing.context 0.909 ms (0.37%)
multiprocessing.reduction 0.095 ms (0.04%)
pickle 0.095 ms (0.04%)
ddtrace.internal.settings.profiling 0.185 ms (0.07%)
ddtrace.vendor.psutil 0.072 ms (0.03%)
ddtrace.vendor.psutil._pslinux 0.072 ms (0.03%)
glob 0.072 ms (0.03%)
ddtrace.internal.datadog.profiling.ddup 0.070 ms (0.03%)
ddtrace.internal.datadog.profiling.ddup._ddup 0.070 ms (0.03%)
ddtrace.internal.datadog.profiling._types 0.070 ms (0.03%)
multiprocessing.sharedctypes 0.164 ms (0.07%)
ctypes 0.126 ms (0.05%)
ddtrace.internal.symbol_db.remoteconfig 0.117 ms (0.05%)
ddtrace.internal.ipc 0.117 ms (0.05%)
secrets 0.117 ms (0.05%)
hmac 0.117 ms (0.05%)
ddtrace.internal.remoteconfig._pubsub 0.103 ms (0.04%)
ddtrace.internal.remoteconfig._subscribers 0.103 ms (0.04%)
ddtrace.debugging._config 0.076 ms (0.03%)
ddtrace._trace.trace_handlers 0.283 ms (0.11%)
ddtrace._trace._inferred_proxy 0.084 ms (0.03%)
ddtrace.propagation.http 0.084 ms (0.03%)
ddtrace.internal._tagset 0.084 ms (0.03%)
ddtrace.contrib.trace_utils 0.084 ms (0.03%)
ddtrace.contrib.internal.trace_utils 0.084 ms (0.03%)

The following import paths have shrunk:

ddtrace.auto 14.958 ms (6.03%)
ddtrace 10.106 ms (4.07%)
ddtrace.trace 8.103 ms (3.26%)
ddtrace._version 0.010 ms (0.00%)
ddtrace._logger 0.649 ms (0.26%)
ddtrace.internal.telemetry 0.649 ms (0.26%)
ddtrace.internal.telemetry.writer 0.649 ms (0.26%)
ddtrace.internal.utils.version 0.649 ms (0.26%)
ddtrace.internal._unpatched 0.028 ms (0.01%)
json 0.028 ms (0.01%)
json.decoder 0.028 ms (0.01%)
re 0.028 ms (0.01%)
enum 0.028 ms (0.01%)
types 0.028 ms (0.01%)
ddtrace.bootstrap.sitecustomize 4.851 ms (1.95%)
ddtrace.bootstrap.preload 4.646 ms (1.87%)
multiprocessing.sharedctypes 0.828 ms (0.33%)
ctypes 0.771 ms (0.31%)
_ctypes 0.771 ms (0.31%)
multiprocessing.heap 0.057 ms (0.02%)
ddtrace.internal.remoteconfig.worker 0.739 ms (0.30%)
ddtrace.internal.settings.dynamic_instrumentation 0.736 ms (0.30%)
ddtrace.internal.remoteconfig.client 0.503 ms (0.20%)
ddtrace.internal.remoteconfig.constants 0.068 ms (0.03%)
ddtrace.internal.remoteconfig._publishers 0.091 ms (0.04%)
multiprocessing 0.063 ms (0.03%)
multiprocessing.context 0.063 ms (0.03%)
multiprocessing.reduction 0.063 ms (0.03%)
ddtrace.internal.settings.profiling 0.059 ms (0.02%)
ddtrace.internal.datadog.profiling 0.059 ms (0.02%)
ddtrace.internal.datadog 0.059 ms (0.02%)
ddtrace._trace.trace_handlers 0.205 ms (0.08%)
ddtrace.contrib.trace_utils 0.149 ms (0.06%)
ddtrace.contrib.internal.trace_utils_async 0.079 ms (0.03%)
ddtrace._trace._inferred_proxy 0.056 ms (0.02%)
ddtrace.propagation.http 0.056 ms (0.02%)
ddtrace.propagation 0.056 ms (0.02%)

@brettlangdon brettlangdon force-pushed the brettlangdon/native.writer.off branch from e5fa427 to bc172db Compare November 19, 2025 16:20
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Performance SLOs

Comparing candidate brettlangdon/native.writer.off (bfc730f) with baseline main (1338d6e)

📈 Performance Regressions (1 suite)
📈 telemetryaddmetric - 30/30

✅ 1-count-metric-1-times

Time: ✅ 2.921µs (SLO: <20.000µs 📉 -85.4%) vs baseline: +0.9%

Memory: ✅ 32.086MB (SLO: <35.500MB -9.6%) vs baseline: -2.7%

✅ 1-count-metrics-100-times

Time: ✅ 198.643µs (SLO: <220.000µs -9.7%) vs baseline: +0.7%

Memory: ✅ 32.027MB (SLO: <35.500MB -9.8%) vs baseline: -3.0%

✅ 1-distribution-metric-1-times

Time: ✅ 3.277µs (SLO: <20.000µs 📉 -83.6%) vs baseline: -0.5%

Memory: ✅ 32.086MB (SLO: <35.500MB -9.6%) vs baseline: -2.5%

✅ 1-distribution-metrics-100-times

Time: ✅ 217.315µs (SLO: <230.000µs -5.5%) vs baseline: +1.1%

Memory: ✅ 32.047MB (SLO: <35.500MB -9.7%) vs baseline: -2.7%

✅ 1-gauge-metric-1-times

Time: ✅ 2.453µs (SLO: <20.000µs 📉 -87.7%) vs baseline: 📈 +13.6%

Memory: ✅ 32.106MB (SLO: <35.500MB -9.6%) vs baseline: -2.5%

✅ 1-gauge-metrics-100-times

Time: ✅ 137.269µs (SLO: <150.000µs -8.5%) vs baseline: -0.4%

Memory: ✅ 32.008MB (SLO: <35.500MB -9.8%) vs baseline: -2.7%

✅ 1-rate-metric-1-times

Time: ✅ 3.044µs (SLO: <20.000µs 📉 -84.8%) vs baseline: -0.5%

Memory: ✅ 32.106MB (SLO: <35.500MB -9.6%) vs baseline: -2.2%

✅ 1-rate-metrics-100-times

Time: ✅ 210.770µs (SLO: <250.000µs 📉 -15.7%) vs baseline: -0.4%

Memory: ✅ 32.165MB (SLO: <35.500MB -9.4%) vs baseline: -2.3%

✅ 100-count-metrics-100-times

Time: ✅ 20.076ms (SLO: <22.000ms -8.7%) vs baseline: +0.4%

Memory: ✅ 32.067MB (SLO: <35.500MB -9.7%) vs baseline: -2.3%

✅ 100-distribution-metrics-100-times

Time: ✅ 2.296ms (SLO: <2.300ms 🟡 -0.2%) vs baseline: +2.0%

Memory: ✅ 31.968MB (SLO: <35.500MB -9.9%) vs baseline: -2.7%

✅ 100-gauge-metrics-100-times

Time: ✅ 1.413ms (SLO: <1.550ms -8.8%) vs baseline: +0.7%

Memory: ✅ 32.106MB (SLO: <35.500MB -9.6%) vs baseline: -2.5%

✅ 100-rate-metrics-100-times

Time: ✅ 2.217ms (SLO: <2.550ms 📉 -13.1%) vs baseline: +1.9%

Memory: ✅ 32.008MB (SLO: <35.500MB -9.8%) vs baseline: -2.8%

✅ flush-1-metric

Time: ✅ 4.701µs (SLO: <20.000µs 📉 -76.5%) vs baseline: +2.6%

Memory: ✅ 32.027MB (SLO: <35.500MB -9.8%) vs baseline: -2.6%

✅ flush-100-metrics

Time: ✅ 174.053µs (SLO: <250.000µs 📉 -30.4%) vs baseline: -0.2%

Memory: ✅ 32.126MB (SLO: <35.500MB -9.5%) vs baseline: -2.4%

✅ flush-1000-metrics

Time: ✅ 2.125ms (SLO: <2.500ms 📉 -15.0%) vs baseline: -0.4%

Memory: ✅ 32.952MB (SLO: <36.500MB -9.7%) vs baseline: -2.0%

🟡 Near SLO Breach (2 suites)
🟡 flasksimple - 18/18

✅ appsec-get

Time: ✅ 4.589ms (SLO: <4.750ms -3.4%) vs baseline: ~same

Memory: ✅ 62.226MB (SLO: <66.500MB -6.4%) vs baseline: +1.8%

✅ appsec-post

Time: ✅ 6.628ms (SLO: <6.750ms 🟡 -1.8%) vs baseline: ~same

Memory: ✅ 62.600MB (SLO: <66.500MB -5.9%) vs baseline: +1.9%

✅ appsec-telemetry

Time: ✅ 4.590ms (SLO: <4.750ms -3.4%) vs baseline: -0.4%

Memory: ✅ 62.207MB (SLO: <66.500MB -6.5%) vs baseline: +1.9%

✅ debugger

Time: ✅ 1.859ms (SLO: <2.000ms -7.1%) vs baseline: +0.5%

Memory: ✅ 45.298MB (SLO: <49.500MB -8.5%) vs baseline: -1.0%

✅ iast-get

Time: ✅ 1.852ms (SLO: <2.000ms -7.4%) vs baseline: ~same

Memory: ✅ 42.271MB (SLO: <49.000MB 📉 -13.7%) vs baseline: -1.1%

✅ profiler

Time: ✅ 1.922ms (SLO: <2.100ms -8.5%) vs baseline: -0.2%

Memory: ✅ 46.360MB (SLO: <50.000MB -7.3%) vs baseline: +0.5%

✅ resource-renaming

Time: ✅ 3.373ms (SLO: <3.650ms -7.6%) vs baseline: -0.1%

Memory: ✅ 52.789MB (SLO: <56.000MB -5.7%) vs baseline: +1.2%

✅ tracer

Time: ✅ 3.354ms (SLO: <3.650ms -8.1%) vs baseline: ~same

Memory: ✅ 52.868MB (SLO: <56.500MB -6.4%) vs baseline: +1.3%

✅ tracer-native

Time: ✅ 3.356ms (SLO: <3.650ms -8.0%) vs baseline: -0.4%

Memory: ✅ 54.700MB (SLO: <60.000MB -8.8%) vs baseline: +4.8%

🟡 otelspan - 22/22

✅ add-event

Time: ✅ 38.677ms (SLO: <47.150ms 📉 -18.0%) vs baseline: -0.1%

Memory: ✅ 36.672MB (SLO: <47.000MB 📉 -22.0%) vs baseline: -1.4%

✅ add-metrics

Time: ✅ 260.944ms (SLO: <344.800ms 📉 -24.3%) vs baseline: +1.9%

Memory: ✅ 40.881MB (SLO: <47.500MB 📉 -13.9%) vs baseline: -1.1%

✅ add-tags

Time: ✅ 316.411ms (SLO: <321.000ms 🟡 -1.4%) vs baseline: +1.0%

Memory: ✅ 40.863MB (SLO: <47.500MB 📉 -14.0%) vs baseline: -1.2%

✅ get-context

Time: ✅ 81.579ms (SLO: <92.350ms 📉 -11.7%) vs baseline: +4.0%

Memory: ✅ 36.963MB (SLO: <46.500MB 📉 -20.5%) vs baseline: -1.3%

✅ is-recording

Time: ✅ 36.220ms (SLO: <44.500ms 📉 -18.6%) vs baseline: +0.4%

Memory: ✅ 36.518MB (SLO: <47.500MB 📉 -23.1%) vs baseline: -1.6%

✅ record-exception

Time: ✅ 58.067ms (SLO: <67.650ms 📉 -14.2%) vs baseline: +1.8%

Memory: ✅ 37.085MB (SLO: <47.000MB 📉 -21.1%) vs baseline: -1.2%

✅ set-status

Time: ✅ 42.676ms (SLO: <50.400ms 📉 -15.3%) vs baseline: +0.6%

Memory: ✅ 36.526MB (SLO: <47.000MB 📉 -22.3%) vs baseline: -1.7%

✅ start

Time: ✅ 36.389ms (SLO: <43.450ms 📉 -16.3%) vs baseline: +2.9%

Memory: ✅ 36.527MB (SLO: <47.000MB 📉 -22.3%) vs baseline: -1.5%

✅ start-finish

Time: ✅ 82.194ms (SLO: <88.000ms -6.6%) vs baseline: +0.1%

Memory: ✅ 34.544MB (SLO: <46.500MB 📉 -25.7%) vs baseline: -1.1%

✅ start-finish-telemetry

Time: ✅ 83.691ms (SLO: <89.000ms -6.0%) vs baseline: -0.3%

Memory: ✅ 34.603MB (SLO: <46.500MB 📉 -25.6%) vs baseline: -0.7%

✅ update-name

Time: ✅ 37.186ms (SLO: <45.150ms 📉 -17.6%) vs baseline: +0.7%

Memory: ✅ 36.579MB (SLO: <47.000MB 📉 -22.2%) vs baseline: -1.5%

✅ All Tests Passing (11 suites)
✅ errortrackingdjangosimple - 6/6

✅ errortracking-enabled-all

Time: ✅ 16.340ms (SLO: <19.850ms 📉 -17.7%) vs baseline: ~same

Memory: ✅ 65.925MB (SLO: <70.000MB -5.8%) vs baseline: +2.0%

✅ errortracking-enabled-user

Time: ✅ 16.642ms (SLO: <19.400ms 📉 -14.2%) vs baseline: +2.3%

Memory: ✅ 65.976MB (SLO: <70.000MB -5.7%) vs baseline: +2.2%

✅ tracer-enabled

Time: ✅ 16.398ms (SLO: <19.450ms 📉 -15.7%) vs baseline: +0.2%

Memory: ✅ 65.984MB (SLO: <70.000MB -5.7%) vs baseline: +2.2%

✅ errortrackingflasksqli - 6/6

✅ errortracking-enabled-all

Time: ✅ 2.067ms (SLO: <2.300ms 📉 -10.1%) vs baseline: -0.5%

Memory: ✅ 52.789MB (SLO: <56.500MB -6.6%) vs baseline: +1.6%

✅ errortracking-enabled-user

Time: ✅ 2.063ms (SLO: <2.250ms -8.3%) vs baseline: ~same

Memory: ✅ 52.789MB (SLO: <56.500MB -6.6%) vs baseline: +1.6%

✅ tracer-enabled

Time: ✅ 2.073ms (SLO: <2.300ms -9.9%) vs baseline: +0.2%

Memory: ✅ 52.770MB (SLO: <56.500MB -6.6%) vs baseline: +1.4%

✅ iast_aspects - 40/40

✅ re_expand_aspect

Time: ✅ 31.676µs (SLO: <40.000µs 📉 -20.8%) vs baseline: -0.4%

Memory: ✅ 37.415MB (SLO: <41.000MB -8.7%) vs baseline: -1.6%

✅ re_expand_noaspect

Time: ✅ 28.478µs (SLO: <40.000µs 📉 -28.8%) vs baseline: +0.1%

Memory: ✅ 37.316MB (SLO: <41.000MB -9.0%) vs baseline: -1.9%

✅ re_findall_aspect

Time: ✅ 2.921µs (SLO: <10.000µs 📉 -70.8%) vs baseline: +0.2%

Memory: ✅ 37.415MB (SLO: <41.000MB -8.7%) vs baseline: -1.8%

✅ re_findall_noaspect

Time: ✅ 1.411µs (SLO: <10.000µs 📉 -85.9%) vs baseline: -0.3%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.9%

✅ re_finditer_aspect

Time: ✅ 4.449µs (SLO: <10.000µs 📉 -55.5%) vs baseline: +1.0%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ re_finditer_noaspect

Time: ✅ 1.404µs (SLO: <10.000µs 📉 -86.0%) vs baseline: -0.8%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.8%

✅ re_fullmatch_aspect

Time: ✅ 2.667µs (SLO: <10.000µs 📉 -73.3%) vs baseline: -0.6%

Memory: ✅ 37.375MB (SLO: <41.000MB -8.8%) vs baseline: -1.6%

✅ re_fullmatch_noaspect

Time: ✅ 1.287µs (SLO: <10.000µs 📉 -87.1%) vs baseline: -3.5%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.9%

✅ re_group_aspect

Time: ✅ 2.930µs (SLO: <10.000µs 📉 -70.7%) vs baseline: +0.6%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ re_group_noaspect

Time: ✅ 1.638µs (SLO: <10.000µs 📉 -83.6%) vs baseline: +2.0%

Memory: ✅ 37.316MB (SLO: <41.000MB -9.0%) vs baseline: -1.9%

✅ re_groups_aspect

Time: ✅ 3.054µs (SLO: <10.000µs 📉 -69.5%) vs baseline: -0.4%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.9%

✅ re_groups_noaspect

Time: ✅ 1.682µs (SLO: <10.000µs 📉 -83.2%) vs baseline: -2.6%

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -1.9%

✅ re_match_aspect

Time: ✅ 2.707µs (SLO: <10.000µs 📉 -72.9%) vs baseline: +1.0%

Memory: ✅ 37.395MB (SLO: <41.000MB -8.8%) vs baseline: -1.8%

✅ re_match_noaspect

Time: ✅ 1.299µs (SLO: <10.000µs 📉 -87.0%) vs baseline: -0.6%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ re_search_aspect

Time: ✅ 2.545µs (SLO: <10.000µs 📉 -74.5%) vs baseline: +1.4%

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -1.6%

✅ re_search_noaspect

Time: ✅ 1.195µs (SLO: <10.000µs 📉 -88.1%) vs baseline: -0.9%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ re_sub_aspect

Time: ✅ 3.416µs (SLO: <10.000µs 📉 -65.8%) vs baseline: +1.3%

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -1.9%

✅ re_sub_noaspect

Time: ✅ 1.540µs (SLO: <10.000µs 📉 -84.6%) vs baseline: +1.0%

Memory: ✅ 37.375MB (SLO: <41.000MB -8.8%) vs baseline: -1.6%

✅ re_subn_aspect

Time: ✅ 3.611µs (SLO: <10.000µs 📉 -63.9%) vs baseline: ~same

Memory: ✅ 37.375MB (SLO: <41.000MB -8.8%) vs baseline: -1.7%

✅ re_subn_noaspect

Time: ✅ 1.600µs (SLO: <10.000µs 📉 -84.0%) vs baseline: +0.3%

Memory: ✅ 37.375MB (SLO: <41.000MB -8.8%) vs baseline: -1.6%

✅ iastaspectsospath - 24/24

✅ ospathbasename_aspect

Time: ✅ 4.284µs (SLO: <10.000µs 📉 -57.2%) vs baseline: -1.0%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.8%

✅ ospathbasename_noaspect

Time: ✅ 1.083µs (SLO: <10.000µs 📉 -89.2%) vs baseline: -0.5%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.6%

✅ ospathjoin_aspect

Time: ✅ 6.065µs (SLO: <10.000µs 📉 -39.3%) vs baseline: -1.8%

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -1.9%

✅ ospathjoin_noaspect

Time: ✅ 2.297µs (SLO: <10.000µs 📉 -77.0%) vs baseline: ~same

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -2.0%

✅ ospathnormcase_aspect

Time: ✅ 3.460µs (SLO: <10.000µs 📉 -65.4%) vs baseline: -2.2%

Memory: ✅ 37.395MB (SLO: <41.000MB -8.8%) vs baseline: -1.7%

✅ ospathnormcase_noaspect

Time: ✅ 0.567µs (SLO: <10.000µs 📉 -94.3%) vs baseline: -1.3%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ ospathsplit_aspect

Time: ✅ 4.863µs (SLO: <10.000µs 📉 -51.4%) vs baseline: ~same

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -1.6%

✅ ospathsplit_noaspect

Time: ✅ 1.586µs (SLO: <10.000µs 📉 -84.1%) vs baseline: -1.0%

Memory: ✅ 37.395MB (SLO: <41.000MB -8.8%) vs baseline: -1.7%

✅ ospathsplitdrive_aspect

Time: ✅ 3.620µs (SLO: <10.000µs 📉 -63.8%) vs baseline: -2.9%

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ ospathsplitdrive_noaspect

Time: ✅ 0.694µs (SLO: <10.000µs 📉 -93.1%) vs baseline: -1.5%

Memory: ✅ 37.356MB (SLO: <41.000MB -8.9%) vs baseline: -2.0%

✅ ospathsplitext_aspect

Time: ✅ 4.627µs (SLO: <10.000µs 📉 -53.7%) vs baseline: ~same

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -1.7%

✅ ospathsplitext_noaspect

Time: ✅ 1.366µs (SLO: <10.000µs 📉 -86.3%) vs baseline: -1.3%

Memory: ✅ 37.336MB (SLO: <41.000MB -8.9%) vs baseline: -2.0%

✅ otelsdkspan - 24/24

✅ add-event

Time: ✅ 40.537ms (SLO: <42.000ms -3.5%) vs baseline: +0.3%

Memory: ✅ 34.426MB (SLO: <39.000MB 📉 -11.7%) vs baseline: -2.3%

✅ add-link

Time: ✅ 36.585ms (SLO: <38.550ms -5.1%) vs baseline: +0.5%

Memory: ✅ 34.485MB (SLO: <39.000MB 📉 -11.6%) vs baseline: -2.1%

✅ add-metrics

Time: ✅ 219.072ms (SLO: <232.000ms -5.6%) vs baseline: -1.0%

Memory: ✅ 34.406MB (SLO: <39.000MB 📉 -11.8%) vs baseline: -2.4%

✅ add-tags

Time: ✅ 213.806ms (SLO: <221.600ms -3.5%) vs baseline: +0.4%

Memory: ✅ 34.426MB (SLO: <39.000MB 📉 -11.7%) vs baseline: -2.3%

✅ get-context

Time: ✅ 29.005ms (SLO: <31.300ms -7.3%) vs baseline: -0.5%

Memory: ✅ 34.426MB (SLO: <39.000MB 📉 -11.7%) vs baseline: -2.3%

✅ is-recording

Time: ✅ 29.373ms (SLO: <31.000ms -5.2%) vs baseline: +0.4%

Memory: ✅ 34.406MB (SLO: <39.000MB 📉 -11.8%) vs baseline: -2.4%

✅ record-exception

Time: ✅ 64.201ms (SLO: <65.850ms -2.5%) vs baseline: +1.7%

Memory: ✅ 34.426MB (SLO: <39.000MB 📉 -11.7%) vs baseline: -2.3%

✅ set-status

Time: ✅ 31.713ms (SLO: <34.150ms -7.1%) vs baseline: -1.0%

Memory: ✅ 34.485MB (SLO: <39.000MB 📉 -11.6%) vs baseline: -2.0%

✅ start

Time: ✅ 28.931ms (SLO: <30.150ms -4.0%) vs baseline: +0.5%

Memory: ✅ 34.426MB (SLO: <39.000MB 📉 -11.7%) vs baseline: -2.2%

✅ start-finish

Time: ✅ 33.890ms (SLO: <35.350ms -4.1%) vs baseline: +0.4%

Memory: ✅ 34.505MB (SLO: <39.000MB 📉 -11.5%) vs baseline: -2.0%

✅ start-finish-telemetry

Time: ✅ 33.768ms (SLO: <35.450ms -4.7%) vs baseline: -1.5%

Memory: ✅ 34.426MB (SLO: <39.000MB 📉 -11.7%) vs baseline: -2.4%

✅ update-name

Time: ✅ 30.988ms (SLO: <33.400ms -7.2%) vs baseline: -0.1%

Memory: ✅ 34.406MB (SLO: <39.000MB 📉 -11.8%) vs baseline: -2.3%

✅ packagespackageforrootmodulemapping - 4/4

✅ cache_off

Time: ✅ 340.228ms (SLO: <354.300ms -4.0%) vs baseline: -0.7%

Memory: ✅ 37.450MB (SLO: <41.500MB -9.8%) vs baseline: -1.9%

✅ cache_on

Time: ✅ 0.383µs (SLO: <10.000µs 📉 -96.2%) vs baseline: -0.3%

Memory: ✅ 37.025MB (SLO: <41.000MB -9.7%) vs baseline: -1.3%

✅ packagesupdateimporteddependencies - 24/24

✅ import_many

Time: ✅ 154.844µs (SLO: <170.000µs -8.9%) vs baseline: +0.2%

Memory: ✅ 36.320MB (SLO: <41.000MB 📉 -11.4%) vs baseline: -2.6%

✅ import_many_cached

Time: ✅ 121.729µs (SLO: <130.000µs -6.4%) vs baseline: ~same

Memory: ✅ 36.494MB (SLO: <41.000MB 📉 -11.0%) vs baseline: -2.4%

✅ import_many_stdlib

Time: ✅ 1.649ms (SLO: <1.750ms -5.8%) vs baseline: +0.4%

Memory: ✅ 36.651MB (SLO: <41.000MB 📉 -10.6%) vs baseline: -1.9%

✅ import_many_stdlib_cached

Time: ✅ 0.988ms (SLO: <1.100ms 📉 -10.2%) vs baseline: +0.2%

Memory: ✅ 36.347MB (SLO: <41.000MB 📉 -11.3%) vs baseline: -3.0%

✅ import_many_unknown

Time: ✅ 826.965µs (SLO: <890.000µs -7.1%) vs baseline: -0.6%

Memory: ✅ 36.511MB (SLO: <41.000MB 📉 -10.9%) vs baseline: -2.6%

✅ import_many_unknown_cached

Time: ✅ 789.382µs (SLO: <870.000µs -9.3%) vs baseline: -0.4%

Memory: ✅ 36.403MB (SLO: <41.000MB 📉 -11.2%) vs baseline: -2.7%

✅ import_one

Time: ✅ 19.802µs (SLO: <30.000µs 📉 -34.0%) vs baseline: -0.2%

Memory: ✅ 36.497MB (SLO: <41.000MB 📉 -11.0%) vs baseline: -2.6%

✅ import_one_cache

Time: ✅ 6.261µs (SLO: <10.000µs 📉 -37.4%) vs baseline: +0.2%

Memory: ✅ 36.399MB (SLO: <41.000MB 📉 -11.2%) vs baseline: -2.7%

✅ import_one_stdlib

Time: ✅ 18.868µs (SLO: <20.000µs -5.7%) vs baseline: +1.1%

Memory: ✅ 36.324MB (SLO: <41.000MB 📉 -11.4%) vs baseline: -2.7%

✅ import_one_stdlib_cache

Time: ✅ 6.272µs (SLO: <10.000µs 📉 -37.3%) vs baseline: ~same

Memory: ✅ 36.146MB (SLO: <41.000MB 📉 -11.8%) vs baseline: -3.2%

✅ import_one_unknown

Time: ✅ 45.382µs (SLO: <50.000µs -9.2%) vs baseline: -0.3%

Memory: ✅ 36.500MB (SLO: <41.000MB 📉 -11.0%) vs baseline: -2.2%

✅ import_one_unknown_cache

Time: ✅ 6.312µs (SLO: <10.000µs 📉 -36.9%) vs baseline: +0.8%

Memory: ✅ 36.160MB (SLO: <41.000MB 📉 -11.8%) vs baseline: -3.2%

✅ ratelimiter - 12/12

✅ defaults

Time: ✅ 2.355µs (SLO: <10.000µs 📉 -76.5%) vs baseline: +0.2%

Memory: ✅ 31.595MB (SLO: <35.500MB 📉 -11.0%) vs baseline: -4.0%

✅ high_rate_limit

Time: ✅ 2.413µs (SLO: <10.000µs 📉 -75.9%) vs baseline: ~same

Memory: ✅ 31.575MB (SLO: <35.500MB 📉 -11.1%) vs baseline: -4.3%

✅ long_window

Time: ✅ 2.354µs (SLO: <10.000µs 📉 -76.5%) vs baseline: ~same

Memory: ✅ 31.595MB (SLO: <35.500MB 📉 -11.0%) vs baseline: -4.3%

✅ low_rate_limit

Time: ✅ 2.361µs (SLO: <10.000µs 📉 -76.4%) vs baseline: +0.1%

Memory: ✅ 31.595MB (SLO: <35.500MB 📉 -11.0%) vs baseline: -4.0%

✅ no_rate_limit

Time: ✅ 0.829µs (SLO: <10.000µs 📉 -91.7%) vs baseline: ~same

Memory: ✅ 31.615MB (SLO: <35.500MB 📉 -10.9%) vs baseline: -4.3%

✅ short_window

Time: ✅ 2.505µs (SLO: <10.000µs 📉 -75.0%) vs baseline: +0.5%

Memory: ✅ 31.595MB (SLO: <35.500MB 📉 -11.0%) vs baseline: -4.1%

✅ samplingrules - 8/8

✅ average_match

Time: ✅ 137.464µs (SLO: <290.000µs 📉 -52.6%) vs baseline: -0.6%

Memory: ✅ 31.615MB (SLO: <35.500MB 📉 -10.9%) vs baseline: -4.2%

✅ high_match

Time: ✅ 173.518µs (SLO: <480.000µs 📉 -63.9%) vs baseline: -0.4%

Memory: ✅ 31.693MB (SLO: <35.500MB 📉 -10.7%) vs baseline: -3.6%

✅ low_match

Time: ✅ 98.734µs (SLO: <120.000µs 📉 -17.7%) vs baseline: -0.5%

Memory: ✅ 600.666MB (SLO: <700.000MB 📉 -14.2%) vs baseline: +4.4%

✅ very_low_match

Time: ✅ 2.677ms (SLO: <8.500ms 📉 -68.5%) vs baseline: +0.3%

Memory: ✅ 68.096MB (SLO: <75.000MB -9.2%) vs baseline: +1.2%

✅ span - 26/26

✅ add-event

Time: ✅ 17.213ms (SLO: <22.500ms 📉 -23.5%) vs baseline: ~same

Memory: ✅ 33.819MB (SLO: <53.000MB 📉 -36.2%) vs baseline: -2.6%

✅ add-metrics

Time: ✅ 88.892ms (SLO: <93.500ms -4.9%) vs baseline: +2.1%

Memory: ✅ 38.263MB (SLO: <53.000MB 📉 -27.8%) vs baseline: -1.7%

✅ add-tags

Time: ✅ 141.489ms (SLO: <155.000ms -8.7%) vs baseline: +1.4%

Memory: ✅ 38.103MB (SLO: <53.000MB 📉 -28.1%) vs baseline: -1.1%

✅ get-context

Time: ✅ 16.241ms (SLO: <20.500ms 📉 -20.8%) vs baseline: +1.8%

Memory: ✅ 33.659MB (SLO: <53.000MB 📉 -36.5%) vs baseline: -2.6%

✅ is-recording

Time: ✅ 16.351ms (SLO: <20.500ms 📉 -20.2%) vs baseline: +0.4%

Memory: ✅ 33.679MB (SLO: <53.000MB 📉 -36.5%) vs baseline: -2.6%

✅ record-exception

Time: ✅ 35.985ms (SLO: <40.000ms 📉 -10.0%) vs baseline: +2.5%

Memory: ✅ 34.190MB (SLO: <53.000MB 📉 -35.5%) vs baseline: -2.5%

✅ set-status

Time: ✅ 17.844ms (SLO: <22.000ms 📉 -18.9%) vs baseline: ~same

Memory: ✅ 33.699MB (SLO: <53.000MB 📉 -36.4%) vs baseline: -2.6%

✅ start

Time: ✅ 16.031ms (SLO: <20.500ms 📉 -21.8%) vs baseline: +1.1%

Memory: ✅ 33.640MB (SLO: <53.000MB 📉 -36.5%) vs baseline: -2.5%

✅ start-finish

Time: ✅ 51.064ms (SLO: <52.500ms -2.7%) vs baseline: +0.8%

Memory: ✅ 32.067MB (SLO: <35.500MB -9.7%) vs baseline: -2.9%

✅ start-finish-telemetry

Time: ✅ 52.204ms (SLO: <54.500ms -4.2%) vs baseline: +0.4%

Memory: ✅ 32.086MB (SLO: <35.500MB -9.6%) vs baseline: -2.8%

✅ start-finish-traceid128

Time: ✅ 53.835ms (SLO: <57.000ms -5.6%) vs baseline: -1.1%

Memory: ✅ 32.086MB (SLO: <35.500MB -9.6%) vs baseline: -2.7%

✅ start-traceid128

Time: ✅ 16.357ms (SLO: <22.500ms 📉 -27.3%) vs baseline: +0.4%

Memory: ✅ 33.561MB (SLO: <53.000MB 📉 -36.7%) vs baseline: -3.2%

✅ update-name

Time: ✅ 16.593ms (SLO: <22.000ms 📉 -24.6%) vs baseline: +1.6%

Memory: ✅ 33.751MB (SLO: <53.000MB 📉 -36.3%) vs baseline: -2.7%

✅ tracer - 6/6

✅ large

Time: ✅ 29.487ms (SLO: <32.950ms 📉 -10.5%) vs baseline: +1.4%

Memory: ✅ 32.853MB (SLO: <36.500MB -10.0%) vs baseline: -3.6%

✅ medium

Time: ✅ 2.900ms (SLO: <3.200ms -9.4%) vs baseline: +1.2%

Memory: ✅ 31.752MB (SLO: <35.500MB 📉 -10.6%) vs baseline: -3.7%

✅ small

Time: ✅ 330.653µs (SLO: <370.000µs 📉 -10.6%) vs baseline: +1.3%

Memory: ✅ 31.634MB (SLO: <35.500MB 📉 -10.9%) vs baseline: -4.2%

ℹ️ Scenarios Missing SLO Configuration (3 scenarios)

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

  • errortrackingdjangosimple-baseline
  • errortrackingflasksqli-baseline
  • flasksimple-baseline

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@juanjux juanjux juanjux approved these changes

@emmettbutler emmettbutler emmettbutler approved these changes

@rachelyangdog rachelyangdog rachelyangdog approved these changes

@Kyle-Verhoog Kyle-Verhoog Awaiting requested review from Kyle-Verhoog Kyle-Verhoog is a code owner automatically assigned from DataDog/python-guild

@wantsui wantsui Awaiting requested review from wantsui wantsui is a code owner automatically assigned from DataDog/apm-python

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@brettlangdon @juanjux @emmettbutler @rachelyangdog @avara1986