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feat(profiling): add profiling of threading.Semaphore objects to Python Lock Profiler #15327

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@vlad-scherbich
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@vlad-scherbich vlad-scherbich commented Nov 18, 2025

…aphore objects

Description

Testing

Risks

Additional Notes

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github-actions bot commented Nov 18, 2025 •
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CODEOWNERS have been resolved as:

ddtrace/profiling/collector/_lock.py                                    @DataDog/profiling-python
ddtrace/profiling/collector/threading.py                                @DataDog/profiling-python
tests/profiling_v2/collector/test_threading.py                          @DataDog/profiling-python

@vlad-scherbich vlad-scherbich changed the title feature(profiling): add support for direct profiling of threading.Sem… feat(profiling): add support for direct profiling of threading.Sem… Nov 18, 2025
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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: 254 ± 3 ms.

The average import time from base is: 261 ± 4 ms.

The import time difference between this PR and base is: -7.0 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 6.809 ms (2.68%)
ddtrace.bootstrap.sitecustomize 4.074 ms (1.60%)
ddtrace.bootstrap.preload 4.074 ms (1.60%)
ddtrace.internal.settings.dynamic_instrumentation 0.688 ms (0.27%)
ddtrace.internal.remoteconfig.worker 0.680 ms (0.27%)
ddtrace.internal.remoteconfig.client 0.627 ms (0.25%)
ddtrace 2.734 ms (1.08%)
ddtrace._logger 0.683 ms (0.27%)
ddtrace.internal.telemetry 0.683 ms (0.27%)
ddtrace.internal.telemetry.writer 0.683 ms (0.27%)
ddtrace.internal.utils.version 0.683 ms (0.27%)
ddtrace.trace 0.678 ms (0.27%)
ddtrace.internal._unpatched 0.027 ms (0.01%)
json 0.027 ms (0.01%)
json.decoder 0.027 ms (0.01%)
re 0.027 ms (0.01%)
enum 0.027 ms (0.01%)
types 0.027 ms (0.01%)

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Performance SLOs

Comparing candidate vlad/proflock-implement-semaphore (334e0f5) with baseline main (deb7cf8)

❌ Test Failures (1 suite)
❌ telemetryaddmetric - 29/30

✅ 1-count-metric-1-times

Time: ✅ 2.924µs (SLO: <20.000µs 📉 -85.4%) vs baseline: +0.5%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ 1-count-metrics-100-times

Time: ✅ 198.098µs (SLO: <220.000µs -10.0%) vs baseline: -0.2%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +5.1%

✅ 1-distribution-metric-1-times

Time: ✅ 3.289µs (SLO: <20.000µs 📉 -83.6%) vs baseline: -0.6%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +5.0%

✅ 1-distribution-metrics-100-times

Time: ✅ 216.267µs (SLO: <220.000µs 🟡 -1.7%) vs baseline: ~same

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ 1-gauge-metric-1-times

Time: ✅ 2.193µs (SLO: <20.000µs 📉 -89.0%) vs baseline: +1.4%

Memory: ✅ 34.465MB (SLO: <35.500MB -2.9%) vs baseline: +4.6%

✅ 1-gauge-metrics-100-times

Time: ✅ 136.368µs (SLO: <150.000µs -9.1%) vs baseline: +0.2%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ 1-rate-metric-1-times

Time: ✅ 3.063µs (SLO: <20.000µs 📉 -84.7%) vs baseline: +0.3%

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +5.2%

✅ 1-rate-metrics-100-times

Time: ✅ 211.401µs (SLO: <250.000µs 📉 -15.4%) vs baseline: ~same

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +5.0%

✅ 100-count-metrics-100-times

Time: ✅ 19.834ms (SLO: <22.000ms -9.8%) vs baseline: -0.5%

Memory: ✅ 34.485MB (SLO: <35.500MB -2.9%) vs baseline: +4.8%

❌ 100-distribution-metrics-100-times

Time: ❌ 2.308ms (SLO: <2.300ms +0.3%) vs baseline: +1.7%

Memory: ✅ 34.446MB (SLO: <35.500MB -3.0%) vs baseline: +4.6%

✅ 100-gauge-metrics-100-times

Time: ✅ 1.416ms (SLO: <1.550ms -8.7%) vs baseline: +1.0%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +5.2%

✅ 100-rate-metrics-100-times

Time: ✅ 2.179ms (SLO: <2.550ms 📉 -14.5%) vs baseline: -1.1%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +5.1%

✅ flush-1-metric

Time: ✅ 4.682µs (SLO: <20.000µs 📉 -76.6%) vs baseline: +1.8%

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.9%

✅ flush-100-metrics

Time: ✅ 174.739µs (SLO: <250.000µs 📉 -30.1%) vs baseline: ~same

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ flush-1000-metrics

Time: ✅ 2.121ms (SLO: <2.500ms 📉 -15.2%) vs baseline: -0.3%

Memory: ✅ 35.291MB (SLO: <36.500MB -3.3%) vs baseline: +5.2%

🟡 Near SLO Breach (3 suites)
🟡 djangosimple - 30/30

✅ appsec

Time: ✅ 19.323ms (SLO: <22.300ms 📉 -13.3%) vs baseline: ~same

Memory: ✅ 67.723MB (SLO: <70.500MB -3.9%) vs baseline: +4.7%

✅ exception-replay-enabled

Time: ✅ 1.343ms (SLO: <1.450ms -7.3%) vs baseline: +0.1%

Memory: ✅ 66.041MB (SLO: <67.500MB -2.2%) vs baseline: +4.8%

✅ iast

Time: ✅ 19.307ms (SLO: <22.250ms 📉 -13.2%) vs baseline: +0.5%

Memory: ✅ 67.751MB (SLO: <70.000MB -3.2%) vs baseline: +4.7%

✅ profiler

Time: ✅ 15.590ms (SLO: <16.550ms -5.8%) vs baseline: +0.2%

Memory: ✅ 55.842MB (SLO: <57.500MB -2.9%) vs baseline: +4.7%

✅ resource-renaming

Time: ✅ 19.324ms (SLO: <21.750ms 📉 -11.2%) vs baseline: ~same

Memory: ✅ 67.790MB (SLO: <70.500MB -3.8%) vs baseline: +4.9%

✅ span-code-origin

Time: ✅ 22.857ms (SLO: <28.200ms 📉 -18.9%) vs baseline: ~same

Memory: ✅ 69.926MB (SLO: <71.000MB 🟡 -1.5%) vs baseline: +4.3%

✅ tracer

Time: ✅ 19.318ms (SLO: <21.750ms 📉 -11.2%) vs baseline: +0.6%

Memory: ✅ 67.889MB (SLO: <70.000MB -3.0%) vs baseline: +4.9%

✅ tracer-and-profiler

Time: ✅ 21.359ms (SLO: <23.500ms -9.1%) vs baseline: -0.5%

Memory: ✅ 69.068MB (SLO: <71.000MB -2.7%) vs baseline: +4.9%

✅ tracer-dont-create-db-spans

Time: ✅ 19.301ms (SLO: <21.500ms 📉 -10.2%) vs baseline: +0.4%

Memory: ✅ 67.810MB (SLO: <70.000MB -3.1%) vs baseline: +4.7%

✅ tracer-minimal

Time: ✅ 16.621ms (SLO: <17.500ms -5.0%) vs baseline: -0.1%

Memory: ✅ 67.805MB (SLO: <70.000MB -3.1%) vs baseline: +4.8%

✅ tracer-native

Time: ✅ 19.218ms (SLO: <21.750ms 📉 -11.6%) vs baseline: -0.2%

Memory: ✅ 67.712MB (SLO: <72.500MB -6.6%) vs baseline: +4.7%

✅ tracer-no-caches

Time: ✅ 17.286ms (SLO: <19.650ms 📉 -12.0%) vs baseline: +0.3%

Memory: ✅ 67.712MB (SLO: <70.000MB -3.3%) vs baseline: +4.6%

✅ tracer-no-databases

Time: ✅ 18.816ms (SLO: <20.100ms -6.4%) vs baseline: +0.4%

Memory: ✅ 67.830MB (SLO: <70.000MB -3.1%) vs baseline: +4.9%

✅ tracer-no-middleware

Time: ✅ 18.973ms (SLO: <21.500ms 📉 -11.8%) vs baseline: +0.2%

Memory: ✅ 67.810MB (SLO: <70.000MB -3.1%) vs baseline: +4.8%

✅ tracer-no-templates

Time: ✅ 19.149ms (SLO: <22.000ms 📉 -13.0%) vs baseline: +0.2%

Memory: ✅ 67.771MB (SLO: <70.500MB -3.9%) vs baseline: +4.9%

🟡 otelspan - 22/22

✅ add-event

Time: ✅ 38.558ms (SLO: <47.150ms 📉 -18.2%) vs baseline: +0.6%

Memory: ✅ 39.081MB (SLO: <47.000MB 📉 -16.8%) vs baseline: +4.7%

✅ add-metrics

Time: ✅ 259.726ms (SLO: <344.800ms 📉 -24.7%) vs baseline: +1.3%

Memory: ✅ 43.273MB (SLO: <47.500MB -8.9%) vs baseline: +4.6%

✅ add-tags

Time: ✅ 316.353ms (SLO: <321.000ms 🟡 -1.4%) vs baseline: +0.6%

Memory: ✅ 43.254MB (SLO: <47.500MB -8.9%) vs baseline: +4.6%

✅ get-context

Time: ✅ 78.695ms (SLO: <92.350ms 📉 -14.8%) vs baseline: +0.2%

Memory: ✅ 39.367MB (SLO: <46.500MB 📉 -15.3%) vs baseline: +5.0%

✅ is-recording

Time: ✅ 36.058ms (SLO: <44.500ms 📉 -19.0%) vs baseline: +0.8%

Memory: ✅ 38.861MB (SLO: <47.500MB 📉 -18.2%) vs baseline: +5.2%

✅ record-exception

Time: ✅ 57.265ms (SLO: <67.650ms 📉 -15.4%) vs baseline: +0.7%

Memory: ✅ 39.424MB (SLO: <47.000MB 📉 -16.1%) vs baseline: +4.8%

✅ set-status

Time: ✅ 42.498ms (SLO: <50.400ms 📉 -15.7%) vs baseline: -0.9%

Memory: ✅ 38.934MB (SLO: <47.000MB 📉 -17.2%) vs baseline: +5.1%

✅ start

Time: ✅ 35.362ms (SLO: <43.450ms 📉 -18.6%) vs baseline: ~same

Memory: ✅ 38.890MB (SLO: <47.000MB 📉 -17.3%) vs baseline: +5.1%

✅ start-finish

Time: ✅ 82.151ms (SLO: <88.000ms -6.6%) vs baseline: +0.4%

Memory: ✅ 36.569MB (SLO: <46.500MB 📉 -21.4%) vs baseline: +5.0%

✅ start-finish-telemetry

Time: ✅ 83.434ms (SLO: <89.000ms -6.3%) vs baseline: -0.2%

Memory: ✅ 36.667MB (SLO: <46.500MB 📉 -21.1%) vs baseline: +5.1%

✅ update-name

Time: ✅ 37.124ms (SLO: <45.150ms 📉 -17.8%) vs baseline: +0.2%

Memory: ✅ 38.897MB (SLO: <47.000MB 📉 -17.2%) vs baseline: +4.5%

🟡 packagespackageforrootmodulemapping - 4/4

✅ cache_off

Time: ✅ 343.836ms (SLO: <354.300ms -3.0%) vs baseline: ~same

Memory: ✅ 40.897MB (SLO: <41.500MB 🟡 -1.5%) vs baseline: +4.8%

✅ cache_on

Time: ✅ 0.384µs (SLO: <10.000µs 📉 -96.2%) vs baseline: +0.8%

Memory: ✅ 39.443MB (SLO: <41.000MB -3.8%) vs baseline: +7.5%

⚠️ Unstable Tests (1 suite)
⚠️ coreapiscenario - 10/10 (1 unstable)

⚠️ context_with_data_listeners

Time: ⚠️ 13.279µs (SLO: <20.000µs 📉 -33.6%) vs baseline: ~same

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +4.8%

✅ context_with_data_no_listeners

Time: ✅ 3.260µs (SLO: <10.000µs 📉 -67.4%) vs baseline: -1.0%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +5.1%

✅ get_item_exists

Time: ✅ 0.578µs (SLO: <10.000µs 📉 -94.2%) vs baseline: -1.2%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.6%

✅ get_item_missing

Time: ✅ 0.638µs (SLO: <10.000µs 📉 -93.6%) vs baseline: -0.6%

Memory: ✅ 34.446MB (SLO: <35.500MB -3.0%) vs baseline: +4.4%

✅ set_item

Time: ✅ 24.187µs (SLO: <30.000µs 📉 -19.4%) vs baseline: +0.2%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ All Tests Passing (14 suites)
✅ errortrackingdjangosimple - 6/6

✅ errortracking-enabled-all

Time: ✅ 16.346ms (SLO: <19.850ms 📉 -17.7%) vs baseline: +0.6%

Memory: ✅ 67.721MB (SLO: <70.000MB -3.3%) vs baseline: +4.9%

✅ errortracking-enabled-user

Time: ✅ 16.354ms (SLO: <19.400ms 📉 -15.7%) vs baseline: +0.6%

Memory: ✅ 67.674MB (SLO: <70.000MB -3.3%) vs baseline: +5.0%

✅ tracer-enabled

Time: ✅ 16.264ms (SLO: <19.450ms 📉 -16.4%) vs baseline: -0.3%

Memory: ✅ 67.712MB (SLO: <70.000MB -3.3%) vs baseline: +4.7%

✅ errortrackingflasksqli - 6/6

✅ errortracking-enabled-all

Time: ✅ 2.069ms (SLO: <2.300ms 📉 -10.0%) vs baseline: +0.2%

Memory: ✅ 54.657MB (SLO: <56.500MB -3.3%) vs baseline: +4.9%

✅ errortracking-enabled-user

Time: ✅ 2.087ms (SLO: <2.250ms -7.2%) vs baseline: +0.9%

Memory: ✅ 54.618MB (SLO: <56.500MB -3.3%) vs baseline: +4.9%

✅ tracer-enabled

Time: ✅ 2.077ms (SLO: <2.300ms -9.7%) vs baseline: +0.3%

Memory: ✅ 54.559MB (SLO: <56.500MB -3.4%) vs baseline: +4.8%

✅ flasksimple - 18/18

✅ appsec-get

Time: ✅ 4.600ms (SLO: <4.750ms -3.2%) vs baseline: ~same

Memory: ✅ 63.944MB (SLO: <66.500MB -3.8%) vs baseline: +4.7%

✅ appsec-post

Time: ✅ 6.615ms (SLO: <6.750ms -2.0%) vs baseline: -0.5%

Memory: ✅ 64.475MB (SLO: <66.500MB -3.0%) vs baseline: +5.1%

✅ appsec-telemetry

Time: ✅ 4.593ms (SLO: <4.750ms -3.3%) vs baseline: ~same

Memory: ✅ 64.050MB (SLO: <66.500MB -3.7%) vs baseline: +4.9%

✅ debugger

Time: ✅ 1.857ms (SLO: <2.000ms -7.1%) vs baseline: -0.1%

Memory: ✅ 47.867MB (SLO: <49.500MB -3.3%) vs baseline: +4.8%

✅ iast-get

Time: ✅ 1.886ms (SLO: <2.000ms -5.7%) vs baseline: +1.7%

Memory: ✅ 44.620MB (SLO: <49.000MB -8.9%) vs baseline: +5.3%

✅ profiler

Time: ✅ 1.923ms (SLO: <2.100ms -8.4%) vs baseline: -0.5%

Memory: ✅ 48.345MB (SLO: <50.000MB -3.3%) vs baseline: +4.7%

✅ resource-renaming

Time: ✅ 3.379ms (SLO: <3.650ms -7.4%) vs baseline: -0.1%

Memory: ✅ 54.639MB (SLO: <56.000MB -2.4%) vs baseline: +4.9%

✅ tracer

Time: ✅ 3.365ms (SLO: <3.650ms -7.8%) vs baseline: ~same

Memory: ✅ 54.612MB (SLO: <56.500MB -3.3%) vs baseline: +4.9%

✅ tracer-native

Time: ✅ 3.358ms (SLO: <3.650ms -8.0%) vs baseline: -0.3%

Memory: ✅ 54.625MB (SLO: <60.000MB -9.0%) vs baseline: +5.0%

✅ flasksqli - 6/6

✅ appsec-enabled

Time: ✅ 3.951ms (SLO: <4.200ms -5.9%) vs baseline: -0.3%

Memory: ✅ 64.527MB (SLO: <66.000MB -2.2%) vs baseline: +5.1%

✅ iast-enabled

Time: ✅ 2.428ms (SLO: <2.800ms 📉 -13.3%) vs baseline: ~same

Memory: ✅ 60.496MB (SLO: <62.500MB -3.2%) vs baseline: +4.9%

✅ tracer-enabled

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

Memory: ✅ 54.696MB (SLO: <56.500MB -3.2%) vs baseline: +5.3%

✅ httppropagationextract - 60/60

✅ all_styles_all_headers

Time: ✅ 80.625µs (SLO: <100.000µs 📉 -19.4%) vs baseline: +0.2%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ b3_headers

Time: ✅ 14.626µs (SLO: <20.000µs 📉 -26.9%) vs baseline: +3.4%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.6%

✅ b3_single_headers

Time: ✅ 14.032µs (SLO: <20.000µs 📉 -29.8%) vs baseline: +5.7%

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.7%

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

Time: ✅ 65.584µs (SLO: <80.000µs 📉 -18.0%) vs baseline: +2.9%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +5.1%

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

Time: ✅ 65.933µs (SLO: <80.000µs 📉 -17.6%) vs baseline: ~same

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.7%

✅ empty_headers

Time: ✅ 1.595µs (SLO: <10.000µs 📉 -84.1%) vs baseline: -0.3%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.7%

✅ full_t_id_datadog_headers

Time: ✅ 23.651µs (SLO: <30.000µs 📉 -21.2%) vs baseline: +5.8%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +4.9%

✅ invalid_priority_header

Time: ✅ 6.622µs (SLO: <10.000µs 📉 -33.8%) vs baseline: +1.1%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +5.1%

✅ invalid_span_id_header

Time: ✅ 6.555µs (SLO: <10.000µs 📉 -34.5%) vs baseline: -0.6%

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.4%

✅ invalid_tags_header

Time: ✅ 6.550µs (SLO: <10.000µs 📉 -34.5%) vs baseline: ~same

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +5.1%

✅ invalid_trace_id_header

Time: ✅ 6.576µs (SLO: <10.000µs 📉 -34.2%) vs baseline: +0.3%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +5.2%

✅ large_header_no_matches

Time: ✅ 27.807µs (SLO: <30.000µs -7.3%) vs baseline: +0.4%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.2%

✅ large_valid_headers_all

Time: ✅ 28.702µs (SLO: <40.000µs 📉 -28.2%) vs baseline: -0.7%

Memory: ✅ 34.485MB (SLO: <35.500MB -2.9%) vs baseline: +4.6%

✅ medium_header_no_matches

Time: ✅ 9.897µs (SLO: <20.000µs 📉 -50.5%) vs baseline: -0.3%

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.9%

✅ medium_valid_headers_all

Time: ✅ 11.354µs (SLO: <20.000µs 📉 -43.2%) vs baseline: ~same

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +5.0%

✅ none_propagation_style

Time: ✅ 1.705µs (SLO: <10.000µs 📉 -83.0%) vs baseline: -0.1%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ tracecontext_headers

Time: ✅ 36.239µs (SLO: <40.000µs -9.4%) vs baseline: +3.9%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +4.9%

✅ valid_headers_all

Time: ✅ 6.562µs (SLO: <10.000µs 📉 -34.4%) vs baseline: +0.3%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ valid_headers_basic

Time: ✅ 6.142µs (SLO: <10.000µs 📉 -38.6%) vs baseline: ~same

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +5.0%

✅ wsgi_empty_headers

Time: ✅ 1.598µs (SLO: <10.000µs 📉 -84.0%) vs baseline: ~same

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +5.2%

✅ wsgi_invalid_priority_header

Time: ✅ 6.605µs (SLO: <10.000µs 📉 -34.0%) vs baseline: +0.2%

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.7%

✅ wsgi_invalid_span_id_header

Time: ✅ 1.608µs (SLO: <10.000µs 📉 -83.9%) vs baseline: +0.4%

Memory: ✅ 34.682MB (SLO: <35.500MB -2.3%) vs baseline: +5.3%

✅ wsgi_invalid_tags_header

Time: ✅ 6.727µs (SLO: <10.000µs 📉 -32.7%) vs baseline: +1.9%

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +4.6%

✅ wsgi_invalid_trace_id_header

Time: ✅ 6.633µs (SLO: <10.000µs 📉 -33.7%) vs baseline: +0.5%

Memory: ✅ 34.465MB (SLO: <35.500MB -2.9%) vs baseline: +4.9%

✅ wsgi_large_header_no_matches

Time: ✅ 28.809µs (SLO: <40.000µs 📉 -28.0%) vs baseline: +0.3%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.9%

✅ wsgi_large_valid_headers_all

Time: ✅ 29.783µs (SLO: <40.000µs 📉 -25.5%) vs baseline: -0.2%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.5%

✅ wsgi_medium_header_no_matches

Time: ✅ 10.127µs (SLO: <20.000µs 📉 -49.4%) vs baseline: ~same

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.8%

✅ wsgi_medium_valid_headers_all

Time: ✅ 11.679µs (SLO: <20.000µs 📉 -41.6%) vs baseline: +0.5%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +5.3%

✅ wsgi_valid_headers_all

Time: ✅ 6.620µs (SLO: <10.000µs 📉 -33.8%) vs baseline: ~same

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.9%

✅ wsgi_valid_headers_basic

Time: ✅ 6.187µs (SLO: <10.000µs 📉 -38.1%) vs baseline: ~same

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.7%

✅ httppropagationinject - 16/16

✅ ids_only

Time: ✅ 20.891µs (SLO: <30.000µs 📉 -30.4%) vs baseline: +0.3%

Memory: ✅ 34.485MB (SLO: <35.500MB -2.9%) vs baseline: +4.5%

✅ with_all

Time: ✅ 27.698µs (SLO: <40.000µs 📉 -30.8%) vs baseline: +0.8%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.8%

✅ with_dd_origin

Time: ✅ 24.967µs (SLO: <30.000µs 📉 -16.8%) vs baseline: +1.2%

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +4.9%

✅ with_priority_and_origin

Time: ✅ 24.075µs (SLO: <40.000µs 📉 -39.8%) vs baseline: +0.9%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.8%

✅ with_sampling_priority

Time: ✅ 20.952µs (SLO: <30.000µs 📉 -30.2%) vs baseline: +0.3%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +5.0%

✅ with_tags

Time: ✅ 26.759µs (SLO: <40.000µs 📉 -33.1%) vs baseline: +3.0%

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +4.9%

✅ with_tags_invalid

Time: ✅ 27.460µs (SLO: <40.000µs 📉 -31.3%) vs baseline: +0.7%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.8%

✅ with_tags_max_size

Time: ✅ 26.264µs (SLO: <40.000µs 📉 -34.3%) vs baseline: +0.2%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +5.3%

✅ iast_aspects - 40/40

✅ re_expand_aspect

Time: ✅ 32.105µs (SLO: <40.000µs 📉 -19.7%) vs baseline: +0.5%

Memory: ✅ 39.833MB (SLO: <41.000MB -2.8%) vs baseline: +4.8%

✅ re_expand_noaspect

Time: ✅ 29.688µs (SLO: <40.000µs 📉 -25.8%) vs baseline: +2.8%

Memory: ✅ 39.892MB (SLO: <41.000MB -2.7%) vs baseline: +5.1%

✅ re_findall_aspect

Time: ✅ 2.908µs (SLO: <10.000µs 📉 -70.9%) vs baseline: -0.1%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.5%

✅ re_findall_noaspect

Time: ✅ 1.417µs (SLO: <10.000µs 📉 -85.8%) vs baseline: +0.2%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.8%

✅ re_finditer_aspect

Time: ✅ 4.368µs (SLO: <10.000µs 📉 -56.3%) vs baseline: -0.9%

Memory: ✅ 39.793MB (SLO: <41.000MB -2.9%) vs baseline: +4.7%

✅ re_finditer_noaspect

Time: ✅ 1.409µs (SLO: <10.000µs 📉 -85.9%) vs baseline: -0.4%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +5.2%

✅ re_fullmatch_aspect

Time: ✅ 2.657µs (SLO: <10.000µs 📉 -73.4%) vs baseline: -1.4%

Memory: ✅ 39.951MB (SLO: <41.000MB -2.6%) vs baseline: +5.0%

✅ re_fullmatch_noaspect

Time: ✅ 1.297µs (SLO: <10.000µs 📉 -87.0%) vs baseline: -0.3%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

✅ re_group_aspect

Time: ✅ 2.932µs (SLO: <10.000µs 📉 -70.7%) vs baseline: +0.4%

Memory: ✅ 39.833MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

✅ re_group_noaspect

Time: ✅ 1.606µs (SLO: <10.000µs 📉 -83.9%) vs baseline: +0.6%

Memory: ✅ 39.911MB (SLO: <41.000MB -2.7%) vs baseline: +4.8%

✅ re_groups_aspect

Time: ✅ 3.263µs (SLO: <10.000µs 📉 -67.4%) vs baseline: +7.1%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +4.7%

✅ re_groups_noaspect

Time: ✅ 1.697µs (SLO: <10.000µs 📉 -83.0%) vs baseline: ~same

Memory: ✅ 39.813MB (SLO: <41.000MB -2.9%) vs baseline: +4.7%

✅ re_match_aspect

Time: ✅ 2.700µs (SLO: <10.000µs 📉 -73.0%) vs baseline: +1.2%

Memory: ✅ 39.931MB (SLO: <41.000MB -2.6%) vs baseline: +5.0%

✅ re_match_noaspect

Time: ✅ 1.301µs (SLO: <10.000µs 📉 -87.0%) vs baseline: -2.5%

Memory: ✅ 39.833MB (SLO: <41.000MB -2.8%) vs baseline: +4.8%

✅ re_search_aspect

Time: ✅ 2.527µs (SLO: <10.000µs 📉 -74.7%) vs baseline: +0.7%

Memory: ✅ 39.754MB (SLO: <41.000MB -3.0%) vs baseline: +4.5%

✅ re_search_noaspect

Time: ✅ 1.208µs (SLO: <10.000µs 📉 -87.9%) vs baseline: -0.1%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.8%

✅ re_sub_aspect

Time: ✅ 3.372µs (SLO: <10.000µs 📉 -66.3%) vs baseline: +1.0%

Memory: ✅ 39.774MB (SLO: <41.000MB -3.0%) vs baseline: +4.4%

✅ re_sub_noaspect

Time: ✅ 1.540µs (SLO: <10.000µs 📉 -84.6%) vs baseline: +0.2%

Memory: ✅ 39.774MB (SLO: <41.000MB -3.0%) vs baseline: +4.7%

✅ re_subn_aspect

Time: ✅ 3.606µs (SLO: <10.000µs 📉 -63.9%) vs baseline: +0.3%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +5.1%

✅ re_subn_noaspect

Time: ✅ 1.623µs (SLO: <10.000µs 📉 -83.8%) vs baseline: +0.7%

Memory: ✅ 39.813MB (SLO: <41.000MB -2.9%) vs baseline: +4.7%

✅ iastaspectssplit - 12/12

✅ rsplit_aspect

Time: ✅ 1.383µs (SLO: <10.000µs 📉 -86.2%) vs baseline: -2.1%

Memory: ✅ 39.970MB (SLO: <41.000MB -2.5%) vs baseline: +5.2%

✅ rsplit_noaspect

Time: ✅ 0.586µs (SLO: <10.000µs 📉 -94.1%) vs baseline: +0.7%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +5.1%

✅ split_aspect

Time: ✅ 1.364µs (SLO: <10.000µs 📉 -86.4%) vs baseline: -3.3%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

✅ split_noaspect

Time: ✅ 0.570µs (SLO: <10.000µs 📉 -94.3%) vs baseline: -0.7%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

✅ splitlines_aspect

Time: ✅ 1.384µs (SLO: <10.000µs 📉 -86.2%) vs baseline: -1.3%

Memory: ✅ 39.970MB (SLO: <41.000MB -2.5%) vs baseline: +4.9%

✅ splitlines_noaspect

Time: ✅ 0.588µs (SLO: <10.000µs 📉 -94.1%) vs baseline: +0.6%

Memory: ✅ 39.892MB (SLO: <41.000MB -2.7%) vs baseline: +4.9%

✅ otelsdkspan - 24/24

✅ add-event

Time: ✅ 40.907ms (SLO: <42.000ms -2.6%) vs baseline: +1.2%

Memory: ✅ 36.943MB (SLO: <39.000MB -5.3%) vs baseline: +4.9%

✅ add-link

Time: ✅ 36.308ms (SLO: <38.550ms -5.8%) vs baseline: +0.2%

Memory: ✅ 36.943MB (SLO: <39.000MB -5.3%) vs baseline: +4.6%

✅ add-metrics

Time: ✅ 218.533ms (SLO: <232.000ms -5.8%) vs baseline: -0.5%

Memory: ✅ 37.021MB (SLO: <39.000MB -5.1%) vs baseline: +5.0%

✅ add-tags

Time: ✅ 211.471ms (SLO: <221.600ms -4.6%) vs baseline: +0.7%

Memory: ✅ 37.041MB (SLO: <39.000MB -5.0%) vs baseline: +5.0%

✅ get-context

Time: ✅ 28.927ms (SLO: <31.300ms -7.6%) vs baseline: -0.5%

Memory: ✅ 36.962MB (SLO: <39.000MB -5.2%) vs baseline: +5.0%

✅ is-recording

Time: ✅ 29.505ms (SLO: <31.000ms -4.8%) vs baseline: +1.0%

Memory: ✅ 36.962MB (SLO: <39.000MB -5.2%) vs baseline: +4.7%

✅ record-exception

Time: ✅ 62.912ms (SLO: <65.850ms -4.5%) vs baseline: -0.7%

Memory: ✅ 37.021MB (SLO: <39.000MB -5.1%) vs baseline: +5.1%

✅ set-status

Time: ✅ 31.845ms (SLO: <34.150ms -6.7%) vs baseline: ~same

Memory: ✅ 37.002MB (SLO: <39.000MB -5.1%) vs baseline: +5.2%

✅ start

Time: ✅ 28.895ms (SLO: <30.150ms -4.2%) vs baseline: -0.2%

Memory: ✅ 36.962MB (SLO: <39.000MB -5.2%) vs baseline: +5.1%

✅ start-finish

Time: ✅ 33.789ms (SLO: <35.350ms -4.4%) vs baseline: +0.2%

Memory: ✅ 36.962MB (SLO: <39.000MB -5.2%) vs baseline: +4.7%

✅ start-finish-telemetry

Time: ✅ 33.711ms (SLO: <35.450ms -4.9%) vs baseline: ~same

Memory: ✅ 36.943MB (SLO: <39.000MB -5.3%) vs baseline: +4.8%

✅ update-name

Time: ✅ 31.460ms (SLO: <33.400ms -5.8%) vs baseline: +1.3%

Memory: ✅ 37.021MB (SLO: <39.000MB -5.1%) vs baseline: +5.1%

✅ ratelimiter - 12/12

✅ defaults

Time: ✅ 2.362µs (SLO: <10.000µs 📉 -76.4%) vs baseline: ~same

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.9%

✅ high_rate_limit

Time: ✅ 2.411µs (SLO: <10.000µs 📉 -75.9%) vs baseline: -0.1%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ long_window

Time: ✅ 2.359µs (SLO: <10.000µs 📉 -76.4%) vs baseline: -0.6%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +5.1%

✅ low_rate_limit

Time: ✅ 2.371µs (SLO: <10.000µs 📉 -76.3%) vs baseline: ~same

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +5.0%

✅ no_rate_limit

Time: ✅ 0.825µs (SLO: <10.000µs 📉 -91.7%) vs baseline: -0.2%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.5%

✅ short_window

Time: ✅ 2.495µs (SLO: <10.000µs 📉 -75.0%) vs baseline: +0.7%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.8%

✅ recursivecomputation - 8/8

✅ deep

Time: ✅ 308.829ms (SLO: <320.950ms -3.8%) vs baseline: ~same

Memory: ✅ 35.311MB (SLO: <36.500MB -3.3%) vs baseline: +4.7%

✅ deep-profiled

Time: ✅ 329.428ms (SLO: <359.150ms -8.3%) vs baseline: -0.2%

Memory: ✅ 39.145MB (SLO: <40.500MB -3.3%) vs baseline: +4.6%

✅ medium

Time: ✅ 6.973ms (SLO: <7.400ms -5.8%) vs baseline: -0.1%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.7%

✅ shallow

Time: ✅ 0.937ms (SLO: <1.050ms 📉 -10.7%) vs baseline: +0.2%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.9%

✅ samplingrules - 8/8

✅ average_match

Time: ✅ 137.882µs (SLO: <290.000µs 📉 -52.5%) vs baseline: -0.5%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.6%

✅ high_match

Time: ✅ 174.429µs (SLO: <480.000µs 📉 -63.7%) vs baseline: +0.4%

Memory: ✅ 34.544MB (SLO: <35.500MB -2.7%) vs baseline: +4.8%

✅ low_match

Time: ✅ 99.069µs (SLO: <120.000µs 📉 -17.4%) vs baseline: +0.4%

Memory: ✅ 603.210MB (SLO: <700.000MB 📉 -13.8%) vs baseline: +4.9%

✅ very_low_match

Time: ✅ 2.661ms (SLO: <8.500ms 📉 -68.7%) vs baseline: +0.2%

Memory: ✅ 70.515MB (SLO: <75.000MB -6.0%) vs baseline: +4.8%

✅ span - 26/26

✅ add-event

Time: ✅ 17.424ms (SLO: <22.500ms 📉 -22.6%) vs baseline: +1.4%

Memory: ✅ 36.446MB (SLO: <53.000MB 📉 -31.2%) vs baseline: +4.6%

✅ add-metrics

Time: ✅ 87.385ms (SLO: <93.500ms -6.5%) vs baseline: -0.2%

Memory: ✅ 40.785MB (SLO: <53.000MB 📉 -23.0%) vs baseline: +5.0%

✅ add-tags

Time: ✅ 139.606ms (SLO: <155.000ms -9.9%) vs baseline: -0.6%

Memory: ✅ 40.470MB (SLO: <53.000MB 📉 -23.6%) vs baseline: +4.6%

✅ get-context

Time: ✅ 16.159ms (SLO: <20.500ms 📉 -21.2%) vs baseline: +1.0%

Memory: ✅ 36.222MB (SLO: <53.000MB 📉 -31.7%) vs baseline: +4.9%

✅ is-recording

Time: ✅ 16.379ms (SLO: <20.500ms 📉 -20.1%) vs baseline: +1.4%

Memory: ✅ 36.239MB (SLO: <53.000MB 📉 -31.6%) vs baseline: +5.0%

✅ record-exception

Time: ✅ 36.044ms (SLO: <40.000ms -9.9%) vs baseline: +2.5%

Memory: ✅ 36.876MB (SLO: <53.000MB 📉 -30.4%) vs baseline: +4.9%

✅ set-status

Time: ✅ 17.880ms (SLO: <22.000ms 📉 -18.7%) vs baseline: +1.1%

Memory: ✅ 36.136MB (SLO: <53.000MB 📉 -31.8%) vs baseline: +4.9%

✅ start

Time: ✅ 16.015ms (SLO: <20.500ms 📉 -21.9%) vs baseline: +0.8%

Memory: ✅ 36.219MB (SLO: <53.000MB 📉 -31.7%) vs baseline: +5.0%

✅ start-finish

Time: ✅ 50.535ms (SLO: <52.500ms -3.7%) vs baseline: -0.2%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.9%

✅ start-finish-telemetry

Time: ✅ 51.937ms (SLO: <54.500ms -4.7%) vs baseline: -0.4%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ start-finish-traceid128

Time: ✅ 53.903ms (SLO: <57.000ms -5.4%) vs baseline: +0.6%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.9%

✅ start-traceid128

Time: ✅ 16.429ms (SLO: <22.500ms 📉 -27.0%) vs baseline: +1.0%

Memory: ✅ 36.340MB (SLO: <53.000MB 📉 -31.4%) vs baseline: +4.8%

✅ update-name

Time: ✅ 16.312ms (SLO: <22.000ms 📉 -25.9%) vs baseline: -1.3%

Memory: ✅ 36.337MB (SLO: <53.000MB 📉 -31.4%) vs baseline: +4.8%

✅ tracer - 6/6

✅ large

Time: ✅ 29.010ms (SLO: <32.950ms 📉 -12.0%) vs baseline: -0.4%

Memory: ✅ 35.507MB (SLO: <36.500MB -2.7%) vs baseline: +4.2%

✅ medium

Time: ✅ 2.887ms (SLO: <3.200ms -9.8%) vs baseline: +0.5%

Memory: ✅ 34.190MB (SLO: <35.500MB -3.7%) vs baseline: +5.0%

✅ small

Time: ✅ 327.404µs (SLO: <370.000µs 📉 -11.5%) vs baseline: +0.6%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +5.1%

ℹ️ Scenarios Missing SLO Configuration (9 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

@vlad-scherbich vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch 3 times, most recently from 9e3700b to 0b81599 Compare November 19, 2025 21:53
@vlad-scherbich vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch from 0b81599 to 334e0f5 Compare November 19, 2025 22:04
@vlad-scherbich vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch from 334e0f5 to 703ce51 Compare November 19, 2025 22:43
@vlad-scherbich vlad-scherbich changed the title feat(profiling): add support for direct profiling of threading.Sem… feat(profiling): add support profiling of threading.Semaphore objects in Python Lock Profiler Nov 19, 2025
@vlad-scherbich vlad-scherbich changed the title feat(profiling): add support profiling of threading.Semaphore objects in Python Lock Profiler feat(profiling): add profiling of threading.Semaphore objects in Python Lock Profiler Nov 19, 2025
@vlad-scherbich vlad-scherbich changed the title feat(profiling): add profiling of threading.Semaphore objects in Python Lock Profiler feat(profiling): add profiling of threading.Semaphore objects to Python Lock Profiler Nov 19, 2025
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@vlad-scherbich