feat(profiling): profile `threading.Semaphore` primitives with Python Lock profiler #15327

vlad-scherbich · 2025-11-18T19:34:52Z

https://datadoghq.atlassian.net/browse/PROF-12727

Description

This PR adds profiling support for threading.Semaphore to the Lock Profiler, including critical double-counting prevention when multiple lock collectors are active simultaneously.

What

Add ThreadingSemaphoreCollector: New collector for profiling threading.Semaphore usage
Prevent double-counting: Detect and skip profiling stdlib-internal locks to avoid duplicate samples
Proper stack attribution: Ensure stack traces point to user code, not threading.py internals

Why

Without direct Semaphore profiling:

Stack traces attribute operations to threading.py internals (e.g., Condition.__enter__ at line 502)
Flame graphs show stdlib code instead of application code
Performance bottlenecks are obscured and unusable for debugging

The double-counting problem:

# When both ThreadingLockCollector and ThreadingSemaphoreCollector are active:
sem = threading.Semaphore(1)  # User creates semaphore
# Internally: Semaphore → Condition → Lock (3 wrapped objects!)
sem.acquire()  # Would generate 2 samples: Semaphore + internal Lock (INSTEAD of 1!)

Without prevention, one user operation generates multiple profile samples, making metrics inaccurate.

Changes

1. New Semaphore Collector (ddtrace/profiling/collector/threading.py)
2. Double-Counting Prevention (ddtrace/profiling/collector/_lock.py)
3. Drive-by fixes (tests/profiling_v2/collector/test_threading.py)

added type annotations
renamed type aliases for clarity

Testing

Test user code is attributed, and not that of internal libs: test_stack_trace_points_to_user_code
Test internal locks are marked: test_internal_lock_marked_correctly
Test double-counting prevention: test_no_double_counting_with_lock_collector

Implementation Notes

Flame graphs show clean attribution to application code.
The Semaphore → Condition → Lock chain is not visible
Why use Frame 2, Not Frame 1?

Frame 0: _profiled_allocate_lock (currently executing)
Frame 1: _LockAllocatorWrapper.__call__ (the wrapper)
Frame 2: actual caller (user code OR threading.py) ← We inspect this!

Performance Impact

Extra ~8 bytes per lock for the new __slots__ field (~8% increase from optimized version)
Lock creation: +1 sys._getframe(2) call, +1 path comparison (one-time per lock)
Hot path (acquire/release): +1 if self.is_internal check (negligible)

Risk

Low: new profiled type added, existing are unmodified
Low: edge cases in is_internal detection (mitigated by testing)

github-actions · 2025-11-18T19:35:33Z

CODEOWNERS have been resolved as:

releasenotes/notes/Added-support-for-profiling-of-threading.Semaphore-objects-to-the-Python-Lock-profiler-aa46b9a5b01ccd3d.yaml  @DataDog/apm-python
.gitignore                                                              @DataDog/apm-core-python
ddtrace/profiling/collector/_lock.py                                    @DataDog/profiling-python
ddtrace/profiling/collector/threading.py                                @DataDog/profiling-python
ddtrace/profiling/profiler.py                                           @DataDog/profiling-python
tests/profiling_v2/collector/test_threading.py                          @DataDog/profiling-python

github-actions · 2025-11-18T20:02:26Z

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 253 ± 2 ms.

The average import time from base is: 262 ± 5 ms.

The import time difference between this PR and base is: -9.5 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 7.230 ms (2.86%)

ddtrace.bootstrap.sitecustomize 4.267 ms (1.69%)

ddtrace.bootstrap.preload 4.267 ms (1.69%)

ddtrace.internal.settings.dynamic_instrumentation 0.731 ms (0.29%)

ddtrace.internal.remoteconfig.client 0.697 ms (0.28%)

ddtrace.internal.remoteconfig.worker 0.693 ms (0.27%)

ddtrace 2.962 ms (1.17%)

ddtrace.trace 0.792 ms (0.31%)

ddtrace._logger 0.712 ms (0.28%)

ddtrace.internal.telemetry 0.712 ms (0.28%)

ddtrace.internal.telemetry.writer 0.712 ms (0.28%)

ddtrace.internal.utils.version 0.712 ms (0.28%)

ddtrace.internal._unpatched 0.091 ms (0.04%)

subprocess 0.064 ms (0.03%)

contextlib 0.064 ms (0.03%)

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%)

pr-commenter · 2025-11-18T20:28:23Z

Performance SLOs

Comparing candidate vlad/proflock-implement-semaphore (ae2c3c9) with baseline main (9ba3709)

📈 Performance Regressions (2 suites)

📈 iastaspects - 118/118

✅ add_aspect

Time: ✅ 0.404µs (SLO: <10.000µs 📉 -96.0%) vs baseline: +0.1%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +4.3%

✅ add_inplace_aspect

Time: ✅ 0.407µs (SLO: <10.000µs 📉 -95.9%) vs baseline: +0.2%

Memory: ✅ 39.852MB (SLO: <41.500MB -4.0%) vs baseline: +5.9%

✅ add_inplace_noaspect

Time: ✅ 0.320µs (SLO: <10.000µs 📉 -96.8%) vs baseline: +0.7%

Memory: ✅ 39.440MB (SLO: <41.500MB -5.0%) vs baseline: +4.6%

✅ add_noaspect

Time: ✅ 0.280µs (SLO: <10.000µs 📉 -97.2%) vs baseline: +1.5%

Memory: ✅ 39.361MB (SLO: <41.500MB -5.2%) vs baseline: +4.7%

✅ bytearray_aspect

Time: ✅ 1.331µs (SLO: <10.000µs 📉 -86.7%) vs baseline: +1.7%

Memory: ✅ 39.813MB (SLO: <41.500MB -4.1%) vs baseline: +5.2%

✅ bytearray_extend_aspect

Time: ✅ 1.544µs (SLO: <10.000µs 📉 -84.6%) vs baseline: +0.1%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +4.9%

✅ bytearray_extend_noaspect

Time: ✅ 0.617µs (SLO: <10.000µs 📉 -93.8%) vs baseline: +0.7%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +4.9%

✅ bytearray_noaspect

Time: ✅ 0.484µs (SLO: <10.000µs 📉 -95.2%) vs baseline: +0.1%

Memory: ✅ 39.440MB (SLO: <41.500MB -5.0%) vs baseline: +4.8%

✅ bytes_aspect

Time: ✅ 1.283µs (SLO: <10.000µs 📉 -87.2%) vs baseline: +0.1%

Memory: ✅ 39.420MB (SLO: <41.500MB -5.0%) vs baseline: +4.6%

✅ bytes_noaspect

Time: ✅ 0.495µs (SLO: <10.000µs 📉 -95.1%) vs baseline: -0.2%

Memory: ✅ 39.872MB (SLO: <41.500MB -3.9%) vs baseline: +5.7%

✅ bytesio_aspect

Time: ✅ 1.314µs (SLO: <10.000µs 📉 -86.9%) vs baseline: +1.4%

Memory: ✅ 39.852MB (SLO: <41.500MB -4.0%) vs baseline: +5.0%

✅ bytesio_noaspect

Time: ✅ 0.499µs (SLO: <10.000µs 📉 -95.0%) vs baseline: +0.6%

Memory: ✅ 39.833MB (SLO: <41.500MB -4.0%) vs baseline: +5.8%

✅ capitalize_aspect

Time: ✅ 0.733µs (SLO: <10.000µs 📉 -92.7%) vs baseline: -1.4%

Memory: ✅ 39.577MB (SLO: <41.500MB -4.6%) vs baseline: +5.3%

✅ capitalize_noaspect

Time: ✅ 0.437µs (SLO: <10.000µs 📉 -95.6%) vs baseline: +0.5%

Memory: ✅ 39.361MB (SLO: <41.500MB -5.2%) vs baseline: +4.5%

✅ casefold_aspect

Time: ✅ 0.737µs (SLO: <10.000µs 📉 -92.6%) vs baseline: +0.3%

Memory: ✅ 39.911MB (SLO: <41.500MB -3.8%) vs baseline: +4.9%

✅ casefold_noaspect

Time: ✅ 0.365µs (SLO: <10.000µs 📉 -96.3%) vs baseline: -0.7%

Memory: ✅ 39.872MB (SLO: <41.500MB -3.9%) vs baseline: +6.0%

✅ decode_aspect

Time: ✅ 0.718µs (SLO: <10.000µs 📉 -92.8%) vs baseline: -1.0%

Memory: ✅ 39.499MB (SLO: <41.500MB -4.8%) vs baseline: +3.9%

✅ decode_noaspect

Time: ✅ 0.419µs (SLO: <10.000µs 📉 -95.8%) vs baseline: ~same

Memory: ✅ 39.754MB (SLO: <41.500MB -4.2%) vs baseline: +5.7%

✅ encode_aspect

Time: ✅ 0.717µs (SLO: <10.000µs 📉 -92.8%) vs baseline: +1.2%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +3.9%

✅ encode_noaspect

Time: ✅ 0.398µs (SLO: <10.000µs 📉 -96.0%) vs baseline: -1.6%

Memory: ✅ 39.931MB (SLO: <41.500MB -3.8%) vs baseline: +6.2%

✅ format_aspect

Time: ✅ 3.479µs (SLO: <10.000µs 📉 -65.2%) vs baseline: +4.8%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +4.9%

✅ format_map_aspect

Time: ✅ 3.907µs (SLO: <10.000µs 📉 -60.9%) vs baseline: 📈 +11.4%

Memory: ✅ 39.518MB (SLO: <41.500MB -4.8%) vs baseline: +5.2%

✅ format_map_noaspect

Time: ✅ 0.777µs (SLO: <10.000µs 📉 -92.2%) vs baseline: +0.5%

Memory: ✅ 39.322MB (SLO: <41.500MB -5.2%) vs baseline: +4.4%

✅ format_noaspect

Time: ✅ 0.595µs (SLO: <10.000µs 📉 -94.1%) vs baseline: -0.2%

Memory: ✅ 39.793MB (SLO: <41.500MB -4.1%) vs baseline: +5.7%

✅ index_aspect

Time: ✅ 0.365µs (SLO: <10.000µs 📉 -96.4%) vs baseline: +1.3%

Memory: ✅ 39.440MB (SLO: <41.500MB -5.0%) vs baseline: +4.4%

✅ index_noaspect

Time: ✅ 0.276µs (SLO: <10.000µs 📉 -97.2%) vs baseline: -0.8%

Memory: ✅ 39.852MB (SLO: <41.500MB -4.0%) vs baseline: +6.1%

✅ join_aspect

Time: ✅ 1.387µs (SLO: <10.000µs 📉 -86.1%) vs baseline: +1.1%

Memory: ✅ 39.479MB (SLO: <41.500MB -4.9%) vs baseline: +4.6%

✅ join_noaspect

Time: ✅ 0.494µs (SLO: <10.000µs 📉 -95.1%) vs baseline: ~same

Memory: ✅ 39.420MB (SLO: <41.500MB -5.0%) vs baseline: +4.8%

✅ ljust_aspect

Time: ✅ 2.491µs (SLO: <20.000µs 📉 -87.5%) vs baseline: -0.3%

Memory: ✅ 39.341MB (SLO: <41.500MB -5.2%) vs baseline: +4.6%

✅ ljust_noaspect

Time: ✅ 0.407µs (SLO: <10.000µs 📉 -95.9%) vs baseline: +1.1%

Memory: ✅ 39.872MB (SLO: <41.500MB -3.9%) vs baseline: +6.0%

✅ lower_aspect

Time: ✅ 2.169µs (SLO: <10.000µs 📉 -78.3%) vs baseline: -1.4%

Memory: ✅ 39.577MB (SLO: <41.500MB -4.6%) vs baseline: +4.9%

✅ lower_noaspect

Time: ✅ 0.366µs (SLO: <10.000µs 📉 -96.3%) vs baseline: -0.4%

Memory: ✅ 39.892MB (SLO: <41.500MB -3.9%) vs baseline: +6.2%

✅ lstrip_aspect

Time: ✅ 2.280µs (SLO: <20.000µs 📉 -88.6%) vs baseline: +3.7%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +4.9%

✅ lstrip_noaspect

Time: ✅ 0.383µs (SLO: <10.000µs 📉 -96.2%) vs baseline: -0.4%

Memory: ✅ 39.892MB (SLO: <41.500MB -3.9%) vs baseline: +5.7%

✅ modulo_aspect

Time: ✅ 1.048µs (SLO: <10.000µs 📉 -89.5%) vs baseline: +0.3%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +3.7%

✅ modulo_aspect_for_bytearray_bytearray

Time: ✅ 1.554µs (SLO: <10.000µs 📉 -84.5%) vs baseline: -0.5%

Memory: ✅ 39.636MB (SLO: <41.500MB -4.5%) vs baseline: +5.2%

✅ modulo_aspect_for_bytes

Time: ✅ 0.980µs (SLO: <10.000µs 📉 -90.2%) vs baseline: ~same

Memory: ✅ 39.558MB (SLO: <41.500MB -4.7%) vs baseline: +4.8%

✅ modulo_aspect_for_bytes_bytearray

Time: ✅ 1.242µs (SLO: <10.000µs 📉 -87.6%) vs baseline: -0.2%

Memory: ✅ 39.459MB (SLO: <41.500MB -4.9%) vs baseline: +4.8%

✅ modulo_noaspect

Time: ✅ 0.622µs (SLO: <10.000µs 📉 -93.8%) vs baseline: -1.7%

Memory: ✅ 39.872MB (SLO: <41.500MB -3.9%) vs baseline: +6.0%

✅ replace_aspect

Time: ✅ 4.868µs (SLO: <10.000µs 📉 -51.3%) vs baseline: -0.3%

Memory: ✅ 39.400MB (SLO: <41.500MB -5.1%) vs baseline: +4.6%

✅ replace_noaspect

Time: ✅ 0.463µs (SLO: <10.000µs 📉 -95.4%) vs baseline: +0.9%

Memory: ✅ 39.872MB (SLO: <41.500MB -3.9%) vs baseline: +6.1%

✅ repr_aspect

Time: ✅ 0.920µs (SLO: <10.000µs 📉 -90.8%) vs baseline: +1.7%

Memory: ✅ 39.479MB (SLO: <41.500MB -4.9%) vs baseline: +4.6%

✅ repr_noaspect

Time: ✅ 0.416µs (SLO: <10.000µs 📉 -95.8%) vs baseline: ~same

Memory: ✅ 39.420MB (SLO: <41.500MB -5.0%) vs baseline: +4.9%

✅ rstrip_aspect

Time: ✅ 1.869µs (SLO: <20.000µs 📉 -90.7%) vs baseline: -0.3%

Memory: ✅ 39.518MB (SLO: <41.500MB -4.8%) vs baseline: +5.1%

✅ rstrip_noaspect

Time: ✅ 0.382µs (SLO: <10.000µs 📉 -96.2%) vs baseline: +1.1%

Memory: ✅ 39.813MB (SLO: <41.500MB -4.1%) vs baseline: +5.7%

✅ slice_aspect

Time: ✅ 0.500µs (SLO: <10.000µs 📉 -95.0%) vs baseline: +0.6%

Memory: ✅ 39.381MB (SLO: <41.500MB -5.1%) vs baseline: +4.4%

✅ slice_noaspect

Time: ✅ 0.443µs (SLO: <10.000µs 📉 -95.6%) vs baseline: -0.7%

Memory: ✅ 39.852MB (SLO: <41.500MB -4.0%) vs baseline: +6.1%

✅ stringio_aspect

Time: ✅ 1.546µs (SLO: <10.000µs 📉 -84.5%) vs baseline: +1.5%

Memory: ✅ 39.833MB (SLO: <41.500MB -4.0%) vs baseline: +4.7%

✅ stringio_noaspect

Time: ✅ 0.718µs (SLO: <10.000µs 📉 -92.8%) vs baseline: -0.3%

Memory: ✅ 39.793MB (SLO: <41.500MB -4.1%) vs baseline: +5.7%

✅ strip_aspect

Time: ✅ 2.210µs (SLO: <20.000µs 📉 -88.9%) vs baseline: -0.3%

Memory: ✅ 39.440MB (SLO: <41.500MB -5.0%) vs baseline: +4.9%

✅ strip_noaspect

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

Memory: ✅ 39.872MB (SLO: <41.500MB -3.9%) vs baseline: +6.0%

✅ swapcase_aspect

Time: ✅ 2.403µs (SLO: <10.000µs 📉 -76.0%) vs baseline: +0.7%

Memory: ✅ 39.499MB (SLO: <41.500MB -4.8%) vs baseline: +4.9%

✅ swapcase_noaspect

Time: ✅ 0.539µs (SLO: <10.000µs 📉 -94.6%) vs baseline: ~same

Memory: ✅ 39.892MB (SLO: <41.500MB -3.9%) vs baseline: +6.1%

✅ title_aspect

Time: ✅ 2.363µs (SLO: <10.000µs 📉 -76.4%) vs baseline: +2.7%

Memory: ✅ 39.558MB (SLO: <41.500MB -4.7%) vs baseline: +5.0%

✅ title_noaspect

Time: ✅ 0.503µs (SLO: <10.000µs 📉 -95.0%) vs baseline: -1.0%

Memory: ✅ 39.852MB (SLO: <41.500MB -4.0%) vs baseline: +5.8%

✅ translate_aspect

Time: ✅ 3.187µs (SLO: <10.000µs 📉 -68.1%) vs baseline: -0.5%

Memory: ✅ 39.499MB (SLO: <41.500MB -4.8%) vs baseline: +5.1%

✅ translate_noaspect

Time: ✅ 1.046µs (SLO: <10.000µs 📉 -89.5%) vs baseline: +1.1%

Memory: ✅ 39.518MB (SLO: <41.500MB -4.8%) vs baseline: +5.1%

✅ upper_aspect

Time: ✅ 2.220µs (SLO: <10.000µs 📉 -77.8%) vs baseline: +0.9%

Memory: ✅ 39.361MB (SLO: <41.500MB -5.2%) vs baseline: +4.7%

✅ upper_noaspect

Time: ✅ 0.368µs (SLO: <10.000µs 📉 -96.3%) vs baseline: -0.9%

Memory: ✅ 39.892MB (SLO: <41.500MB -3.9%) vs baseline: +6.2%

📈 iastaspectsospath - 24/24

✅ ospathbasename_aspect

Time: ✅ 5.202µs (SLO: <10.000µs 📉 -48.0%) vs baseline: 📈 +21.5%

Memory: ✅ 39.931MB (SLO: <41.000MB -2.6%) vs baseline: +5.3%

✅ ospathbasename_noaspect

Time: ✅ 1.081µs (SLO: <10.000µs 📉 -89.2%) vs baseline: +0.3%

Memory: ✅ 39.911MB (SLO: <41.000MB -2.7%) vs baseline: +5.2%

✅ ospathjoin_aspect

Time: ✅ 6.949µs (SLO: <10.000µs 📉 -30.5%) vs baseline: 📈 +12.3%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +4.8%

✅ ospathjoin_noaspect

Time: ✅ 2.285µs (SLO: <10.000µs 📉 -77.1%) vs baseline: -0.2%

Memory: ✅ 39.892MB (SLO: <41.000MB -2.7%) vs baseline: +5.0%

✅ ospathnormcase_aspect

Time: ✅ 3.988µs (SLO: <10.000µs 📉 -60.1%) vs baseline: 📈 +12.8%

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

✅ ospathnormcase_noaspect

Time: ✅ 0.565µs (SLO: <10.000µs 📉 -94.3%) vs baseline: -0.7%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

✅ ospathsplit_aspect

Time: ✅ 5.783µs (SLO: <10.000µs 📉 -42.2%) vs baseline: 📈 +17.9%

Memory: ✅ 39.793MB (SLO: <41.000MB -2.9%) vs baseline: +4.4%

✅ ospathsplit_noaspect

Time: ✅ 1.592µs (SLO: <10.000µs 📉 -84.1%) vs baseline: +0.6%

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

✅ ospathsplitdrive_aspect

Time: ✅ 4.173µs (SLO: <10.000µs 📉 -58.3%) vs baseline: 📈 +11.5%

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

✅ ospathsplitdrive_noaspect

Time: ✅ 0.698µs (SLO: <10.000µs 📉 -93.0%) vs baseline: +1.1%

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

✅ ospathsplitext_aspect

Time: ✅ 4.686µs (SLO: <10.000µs 📉 -53.1%) vs baseline: +1.2%

Memory: ✅ 39.813MB (SLO: <41.000MB -2.9%) vs baseline: +4.5%

✅ ospathsplitext_noaspect

Time: ✅ 1.384µs (SLO: <10.000µs 📉 -86.2%) vs baseline: +0.4%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

🟡 Near SLO Breach (1 suite)

🟡 telemetryaddmetric - 30/30

✅ 1-count-metric-1-times

Time: ✅ 3.030µs (SLO: <20.000µs 📉 -84.9%) vs baseline: +3.5%

Memory: ✅ 34.564MB (SLO: <35.500MB -2.6%) vs baseline: +5.0%

✅ 1-count-metrics-100-times

Time: ✅ 201.284µs (SLO: <220.000µs -8.5%) vs baseline: +0.7%

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

✅ 1-distribution-metric-1-times

Time: ✅ 3.325µs (SLO: <20.000µs 📉 -83.4%) vs baseline: +1.2%

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

✅ 1-distribution-metrics-100-times

Time: ✅ 214.721µs (SLO: <230.000µs -6.6%) vs baseline: +0.1%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.6%

✅ 1-gauge-metric-1-times

Time: ✅ 2.213µs (SLO: <20.000µs 📉 -88.9%) vs baseline: +1.2%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ 1-gauge-metrics-100-times

Time: ✅ 136.592µs (SLO: <150.000µs -8.9%) vs baseline: +0.1%

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

✅ 1-rate-metric-1-times

Time: ✅ 3.119µs (SLO: <20.000µs 📉 -84.4%) vs baseline: +2.4%

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.6%

✅ 1-rate-metrics-100-times

Time: ✅ 216.704µs (SLO: <250.000µs 📉 -13.3%) vs baseline: +1.9%

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

✅ 100-count-metrics-100-times

Time: ✅ 20.195ms (SLO: <22.000ms -8.2%) vs baseline: -0.9%

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

✅ 100-distribution-metrics-100-times

Time: ✅ 2.260ms (SLO: <2.300ms 🟡 -1.8%) vs baseline: -1.5%

Memory: ✅ 34.741MB (SLO: <35.500MB -2.1%) vs baseline: +5.2%

✅ 100-gauge-metrics-100-times

Time: ✅ 1.405ms (SLO: <1.550ms -9.4%) vs baseline: ~same

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

✅ 100-rate-metrics-100-times

Time: ✅ 2.194ms (SLO: <2.550ms 📉 -14.0%) vs baseline: -0.7%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.9%

✅ flush-1-metric

Time: ✅ 4.774µs (SLO: <20.000µs 📉 -76.1%) vs baseline: +7.9%

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

✅ flush-100-metrics

Time: ✅ 174.303µs (SLO: <250.000µs 📉 -30.3%) vs baseline: +1.1%

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.7%

✅ flush-1000-metrics

Time: ✅ 2.135ms (SLO: <2.500ms 📉 -14.6%) vs baseline: +1.0%

Memory: ✅ 35.448MB (SLO: <36.500MB -2.9%) vs baseline: +5.0%

⚠️ Unstable Tests (1 suite)

⚠️

coreapiscenario - 10/10 (1 unstable)

⚠️ context_with_data_listeners

Time: ⚠️ 13.275µs (SLO: <20.000µs 📉 -33.6%) vs baseline: -0.3%

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

✅ context_with_data_no_listeners

Time: ✅ 3.274µs (SLO: <10.000µs 📉 -67.3%) vs baseline: +1.2%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.8%

✅ get_item_exists

Time: ✅ 0.577µs (SLO: <10.000µs 📉 -94.2%) vs baseline: -0.2%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ get_item_missing

Time: ✅ 0.631µs (SLO: <10.000µs 📉 -93.7%) vs baseline: -0.5%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +4.7%

✅ set_item

Time: ✅ 24.032µs (SLO: <30.000µs 📉 -19.9%) vs baseline: -0.3%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.1%

✅ All Tests Passing (19 suites)

✅ djangosimple - 30/30

✅ appsec

Time: ✅ 19.241ms (SLO: <22.300ms 📉 -13.7%) vs baseline: -0.1%

Memory: ✅ 67.908MB (SLO: <70.500MB -3.7%) vs baseline: +4.6%

✅ exception-replay-enabled

Time: ✅ 1.338ms (SLO: <1.450ms -7.7%) vs baseline: ~same

Memory: ✅ 66.109MB (SLO: <67.500MB -2.1%) vs baseline: +4.9%

✅ iast

Time: ✅ 19.268ms (SLO: <22.250ms 📉 -13.4%) vs baseline: ~same

Memory: ✅ 67.869MB (SLO: <70.000MB -3.0%) vs baseline: +4.5%

✅ profiler

Time: ✅ 15.659ms (SLO: <16.550ms -5.4%) vs baseline: +0.8%

Memory: ✅ 55.821MB (SLO: <57.500MB -2.9%) vs baseline: +4.4%

✅ resource-renaming

Time: ✅ 19.308ms (SLO: <21.750ms 📉 -11.2%) vs baseline: +0.2%

Memory: ✅ 67.830MB (SLO: <70.500MB -3.8%) vs baseline: +4.3%

✅ span-code-origin

Time: ✅ 22.758ms (SLO: <28.200ms 📉 -19.3%) vs baseline: -0.3%

Memory: ✅ 69.149MB (SLO: <71.000MB -2.6%) vs baseline: +4.7%

✅ tracer

Time: ✅ 19.265ms (SLO: <21.750ms 📉 -11.4%) vs baseline: -0.2%

Memory: ✅ 67.919MB (SLO: <70.000MB -3.0%) vs baseline: +4.5%

✅ tracer-and-profiler

Time: ✅ 21.424ms (SLO: <23.500ms -8.8%) vs baseline: +0.7%

Memory: ✅ 68.924MB (SLO: <71.000MB -2.9%) vs baseline: +4.8%

✅ tracer-dont-create-db-spans

Time: ✅ 19.207ms (SLO: <21.500ms 📉 -10.7%) vs baseline: -0.7%

Memory: ✅ 67.908MB (SLO: <70.000MB -3.0%) vs baseline: +4.6%

✅ tracer-minimal

Time: ✅ 16.654ms (SLO: <17.500ms -4.8%) vs baseline: +0.4%

Memory: ✅ 67.800MB (SLO: <70.000MB -3.1%) vs baseline: +4.8%

✅ tracer-native

Time: ✅ 19.296ms (SLO: <21.750ms 📉 -11.3%) vs baseline: +0.5%

Memory: ✅ 67.771MB (SLO: <72.500MB -6.5%) vs baseline: +4.5%

✅ tracer-no-caches

Time: ✅ 17.332ms (SLO: <19.650ms 📉 -11.8%) vs baseline: ~same

Memory: ✅ 67.771MB (SLO: <70.000MB -3.2%) vs baseline: +4.9%

✅ tracer-no-databases

Time: ✅ 18.764ms (SLO: <20.100ms -6.6%) vs baseline: -0.1%

Memory: ✅ 67.771MB (SLO: <70.000MB -3.2%) vs baseline: +4.8%

✅ tracer-no-middleware

Time: ✅ 18.966ms (SLO: <21.500ms 📉 -11.8%) vs baseline: ~same

Memory: ✅ 67.849MB (SLO: <70.000MB -3.1%) vs baseline: +5.0%

✅ tracer-no-templates

Time: ✅ 19.200ms (SLO: <22.000ms 📉 -12.7%) vs baseline: +0.5%

Memory: ✅ 67.802MB (SLO: <70.500MB -3.8%) vs baseline: +4.8%

✅ errortrackingdjangosimple - 6/6

✅ errortracking-enabled-all

Time: ✅ 16.304ms (SLO: <19.850ms 📉 -17.9%) vs baseline: -0.3%

Memory: ✅ 67.734MB (SLO: <70.000MB -3.2%) vs baseline: +5.0%

✅ errortracking-enabled-user

Time: ✅ 16.282ms (SLO: <19.400ms 📉 -16.1%) vs baseline: -0.2%

Memory: ✅ 67.719MB (SLO: <70.000MB -3.3%) vs baseline: +4.8%

✅ tracer-enabled

Time: ✅ 16.346ms (SLO: <19.450ms 📉 -16.0%) vs baseline: +0.4%

Memory: ✅ 67.733MB (SLO: <70.000MB -3.2%) vs baseline: +4.9%

✅ errortrackingflasksqli - 6/6

✅ errortracking-enabled-all

Time: ✅ 2.086ms (SLO: <2.300ms -9.3%) vs baseline: +0.9%

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

✅ errortracking-enabled-user

Time: ✅ 2.070ms (SLO: <2.250ms -8.0%) vs baseline: ~same

Memory: ✅ 54.500MB (SLO: <56.500MB -3.5%) vs baseline: +4.8%

✅ tracer-enabled

Time: ✅ 2.085ms (SLO: <2.300ms -9.4%) vs baseline: +1.0%

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

✅ flasksimple - 18/18

✅ appsec-get

Time: ✅ 4.592ms (SLO: <4.750ms -3.3%) vs baseline: -0.3%

Memory: ✅ 64.044MB (SLO: <66.500MB -3.7%) vs baseline: +4.8%

✅ appsec-post

Time: ✅ 6.604ms (SLO: <6.750ms -2.2%) vs baseline: -0.1%

Memory: ✅ 64.319MB (SLO: <66.500MB -3.3%) vs baseline: +4.7%

✅ appsec-telemetry

Time: ✅ 4.583ms (SLO: <4.750ms -3.5%) vs baseline: -0.4%

Memory: ✅ 64.085MB (SLO: <66.500MB -3.6%) vs baseline: +4.9%

✅ debugger

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

Memory: ✅ 47.806MB (SLO: <49.500MB -3.4%) vs baseline: +4.6%

✅ iast-get

Time: ✅ 1.858ms (SLO: <2.000ms -7.1%) vs baseline: -0.2%

Memory: ✅ 44.771MB (SLO: <49.000MB -8.6%) vs baseline: +5.0%

✅ profiler

Time: ✅ 1.928ms (SLO: <2.100ms -8.2%) vs baseline: -0.4%

Memory: ✅ 48.400MB (SLO: <50.000MB -3.2%) vs baseline: +4.9%

✅ resource-renaming

Time: ✅ 3.371ms (SLO: <3.650ms -7.6%) vs baseline: ~same

Memory: ✅ 54.732MB (SLO: <56.000MB -2.3%) vs baseline: +4.8%

✅ tracer

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

Memory: ✅ 54.668MB (SLO: <56.500MB -3.2%) vs baseline: +4.8%

✅ tracer-native

Time: ✅ 3.362ms (SLO: <3.650ms -7.9%) vs baseline: +0.4%

Memory: ✅ 54.688MB (SLO: <60.000MB -8.9%) vs baseline: +5.0%

✅ flasksqli - 6/6

✅ appsec-enabled

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

Memory: ✅ 64.428MB (SLO: <66.000MB -2.4%) vs baseline: +4.9%

✅ iast-enabled

Time: ✅ 2.435ms (SLO: <2.800ms 📉 -13.0%) vs baseline: -0.8%

Memory: ✅ 60.477MB (SLO: <62.500MB -3.2%) vs baseline: +4.9%

✅ tracer-enabled

Time: ✅ 2.051ms (SLO: <2.250ms -8.8%) vs baseline: -0.8%

Memory: ✅ 54.578MB (SLO: <56.500MB -3.4%) vs baseline: +4.8%

✅ httppropagationextract - 60/60

✅ all_styles_all_headers

Time: ✅ 80.553µs (SLO: <100.000µs 📉 -19.4%) vs baseline: -0.4%

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

✅ b3_headers

Time: ✅ 14.794µs (SLO: <20.000µs 📉 -26.0%) vs baseline: +4.0%

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

✅ b3_single_headers

Time: ✅ 13.287µs (SLO: <20.000µs 📉 -33.6%) vs baseline: +0.4%

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

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

Time: ✅ 65.510µs (SLO: <80.000µs 📉 -18.1%) vs baseline: +2.9%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.9%

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

Time: ✅ 65.957µs (SLO: <80.000µs 📉 -17.6%) vs baseline: -0.8%

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

✅ empty_headers

Time: ✅ 1.605µs (SLO: <10.000µs 📉 -84.0%) vs baseline: ~same

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

✅ full_t_id_datadog_headers

Time: ✅ 22.553µs (SLO: <30.000µs 📉 -24.8%) vs baseline: +0.2%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.1%

✅ invalid_priority_header

Time: ✅ 6.630µs (SLO: <10.000µs 📉 -33.7%) vs baseline: +1.1%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +4.5%

✅ invalid_span_id_header

Time: ✅ 6.587µs (SLO: <10.000µs 📉 -34.1%) vs baseline: +1.0%

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

✅ invalid_tags_header

Time: ✅ 6.584µs (SLO: <10.000µs 📉 -34.2%) vs baseline: +0.3%

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

✅ invalid_trace_id_header

Time: ✅ 6.582µs (SLO: <10.000µs 📉 -34.2%) vs baseline: +0.9%

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

✅ large_header_no_matches

Time: ✅ 27.610µs (SLO: <30.000µs -8.0%) vs baseline: -0.3%

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

✅ large_valid_headers_all

Time: ✅ 28.765µs (SLO: <40.000µs 📉 -28.1%) vs baseline: ~same

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

✅ medium_header_no_matches

Time: ✅ 9.901µs (SLO: <20.000µs 📉 -50.5%) vs baseline: -0.7%

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

✅ medium_valid_headers_all

Time: ✅ 11.434µs (SLO: <20.000µs 📉 -42.8%) vs baseline: ~same

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

✅ none_propagation_style

Time: ✅ 1.710µs (SLO: <10.000µs 📉 -82.9%) vs baseline: -1.2%

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%) vs baseline: +4.8%

✅ tracecontext_headers

Time: ✅ 34.963µs (SLO: <40.000µs 📉 -12.6%) vs baseline: -0.2%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.6%

✅ valid_headers_all

Time: ✅ 6.617µs (SLO: <10.000µs 📉 -33.8%) vs baseline: +1.3%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.8%

✅ valid_headers_basic

Time: ✅ 6.179µs (SLO: <10.000µs 📉 -38.2%) vs baseline: +0.9%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ wsgi_empty_headers

Time: ✅ 1.611µs (SLO: <10.000µs 📉 -83.9%) vs baseline: +0.3%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +5.0%

✅ wsgi_invalid_priority_header

Time: ✅ 6.654µs (SLO: <10.000µs 📉 -33.5%) vs baseline: +0.2%

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

✅ wsgi_invalid_span_id_header

Time: ✅ 1.611µs (SLO: <10.000µs 📉 -83.9%) vs baseline: -0.8%

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

✅ wsgi_invalid_tags_header

Time: ✅ 6.631µs (SLO: <10.000µs 📉 -33.7%) vs baseline: +0.4%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.9%

✅ wsgi_invalid_trace_id_header

Time: ✅ 6.639µs (SLO: <10.000µs 📉 -33.6%) vs baseline: +0.5%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.8%

✅ wsgi_large_header_no_matches

Time: ✅ 28.880µs (SLO: <40.000µs 📉 -27.8%) vs baseline: +0.3%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.9%

✅ wsgi_large_valid_headers_all

Time: ✅ 29.839µs (SLO: <40.000µs 📉 -25.4%) vs baseline: ~same

Memory: ✅ 34.505MB (SLO: <35.500MB -2.8%) vs baseline: +4.6%

✅ wsgi_medium_header_no_matches

Time: ✅ 10.313µs (SLO: <20.000µs 📉 -48.4%) vs baseline: +0.6%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.8%

✅ wsgi_medium_valid_headers_all

Time: ✅ 11.638µs (SLO: <20.000µs 📉 -41.8%) vs baseline: +0.3%

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

✅ wsgi_valid_headers_all

Time: ✅ 6.646µs (SLO: <10.000µs 📉 -33.5%) vs baseline: +0.7%

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

✅ wsgi_valid_headers_basic

Time: ✅ 6.212µs (SLO: <10.000µs 📉 -37.9%) vs baseline: +0.6%

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

✅ httppropagationinject - 16/16

✅ ids_only

Time: ✅ 20.926µs (SLO: <30.000µs 📉 -30.2%) vs baseline: -0.2%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.3%

✅ with_all

Time: ✅ 27.859µs (SLO: <40.000µs 📉 -30.4%) vs baseline: +0.5%

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

✅ with_dd_origin

Time: ✅ 24.726µs (SLO: <30.000µs 📉 -17.6%) vs baseline: ~same

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

✅ with_priority_and_origin

Time: ✅ 24.102µs (SLO: <40.000µs 📉 -39.7%) vs baseline: -0.6%

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

✅ with_sampling_priority

Time: ✅ 20.975µs (SLO: <30.000µs 📉 -30.1%) vs baseline: +0.7%

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

✅ with_tags

Time: ✅ 26.163µs (SLO: <40.000µs 📉 -34.6%) vs baseline: +0.9%

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

✅ with_tags_invalid

Time: ✅ 27.389µs (SLO: <40.000µs 📉 -31.5%) vs baseline: ~same

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%) vs baseline: +4.7%

✅ with_tags_max_size

Time: ✅ 26.276µs (SLO: <40.000µs 📉 -34.3%) vs baseline: -0.3%

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

✅ iast_aspects - 40/40

✅ re_expand_aspect

Time: ✅ 30.702µs (SLO: <40.000µs 📉 -23.2%) vs baseline: ~same

Memory: ✅ 39.892MB (SLO: <41.000MB -2.7%) vs baseline: +4.7%

✅ re_expand_noaspect

Time: ✅ 27.829µs (SLO: <40.000µs 📉 -30.4%) vs baseline: -0.7%

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

✅ re_findall_aspect

Time: ✅ 2.869µs (SLO: <10.000µs 📉 -71.3%) vs baseline: -0.2%

Memory: ✅ 39.911MB (SLO: <41.000MB -2.7%) vs baseline: +5.0%

✅ re_findall_noaspect

Time: ✅ 1.390µs (SLO: <10.000µs 📉 -86.1%) vs baseline: -0.7%

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

✅ re_finditer_aspect

Time: ✅ 4.165µs (SLO: <10.000µs 📉 -58.3%) vs baseline: -0.7%

Memory: ✅ 39.734MB (SLO: <41.000MB -3.1%) vs baseline: +4.6%

✅ re_finditer_noaspect

Time: ✅ 1.374µs (SLO: <10.000µs 📉 -86.3%) vs baseline: -0.9%

Memory: ✅ 39.911MB (SLO: <41.000MB -2.7%) vs baseline: +4.9%

✅ re_fullmatch_aspect

Time: ✅ 2.601µs (SLO: <10.000µs 📉 -74.0%) vs baseline: -1.0%

Memory: ✅ 39.911MB (SLO: <41.000MB -2.7%) vs baseline: +4.9%

✅ re_fullmatch_noaspect

Time: ✅ 1.298µs (SLO: <10.000µs 📉 -87.0%) vs baseline: -0.3%

Memory: ✅ 39.990MB (SLO: <41.000MB -2.5%) vs baseline: +5.2%

✅ re_group_aspect

Time: ✅ 2.902µs (SLO: <10.000µs 📉 -71.0%) vs baseline: +0.3%

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

✅ re_group_noaspect

Time: ✅ 1.574µs (SLO: <10.000µs 📉 -84.3%) vs baseline: -0.8%

Memory: ✅ 39.951MB (SLO: <41.000MB -2.6%) vs baseline: +5.1%

✅ re_groups_aspect

Time: ✅ 3.030µs (SLO: <10.000µs 📉 -69.7%) vs baseline: +0.7%

Memory: ✅ 39.931MB (SLO: <41.000MB -2.6%) vs baseline: +5.3%

✅ re_groups_noaspect

Time: ✅ 1.693µs (SLO: <10.000µs 📉 -83.1%) vs baseline: +1.8%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.7%

✅ re_match_aspect

Time: ✅ 2.732µs (SLO: <10.000µs 📉 -72.7%) vs baseline: +2.6%

Memory: ✅ 39.774MB (SLO: <41.000MB -3.0%) vs baseline: +4.6%

✅ re_match_noaspect

Time: ✅ 1.327µs (SLO: <10.000µs 📉 -86.7%) vs baseline: +4.2%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +4.8%

✅ re_search_aspect

Time: ✅ 2.491µs (SLO: <10.000µs 📉 -75.1%) vs baseline: ~same

Memory: ✅ 39.931MB (SLO: <41.000MB -2.6%) vs baseline: +5.2%

✅ re_search_noaspect

Time: ✅ 1.186µs (SLO: <10.000µs 📉 -88.1%) vs baseline: -0.6%

Memory: ✅ 39.833MB (SLO: <41.000MB -2.8%) vs baseline: +5.0%

✅ re_sub_aspect

Time: ✅ 3.331µs (SLO: <10.000µs 📉 -66.7%) vs baseline: +0.5%

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

✅ re_sub_noaspect

Time: ✅ 1.501µs (SLO: <10.000µs 📉 -85.0%) vs baseline: -1.1%

Memory: ✅ 39.813MB (SLO: <41.000MB -2.9%) vs baseline: +4.9%

✅ re_subn_aspect

Time: ✅ 3.530µs (SLO: <10.000µs 📉 -64.7%) vs baseline: ~same

Memory: ✅ 39.793MB (SLO: <41.000MB -2.9%) vs baseline: +4.8%

✅ re_subn_noaspect

Time: ✅ 1.574µs (SLO: <10.000µs 📉 -84.3%) vs baseline: +0.3%

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

✅ iastaspectssplit - 12/12

✅ rsplit_aspect

Time: ✅ 1.368µs (SLO: <10.000µs 📉 -86.3%) vs baseline: -0.2%

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

✅ rsplit_noaspect

Time: ✅ 0.581µs (SLO: <10.000µs 📉 -94.2%) vs baseline: +0.4%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +5.0%

✅ split_aspect

Time: ✅ 1.371µs (SLO: <10.000µs 📉 -86.3%) vs baseline: +1.0%

Memory: ✅ 39.852MB (SLO: <41.000MB -2.8%) vs baseline: +4.7%

✅ split_noaspect

Time: ✅ 0.572µs (SLO: <10.000µs 📉 -94.3%) vs baseline: -0.2%

Memory: ✅ 39.872MB (SLO: <41.000MB -2.8%) vs baseline: +4.9%

✅ splitlines_aspect

Time: ✅ 1.356µs (SLO: <10.000µs 📉 -86.4%) vs baseline: -1.1%

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

✅ splitlines_noaspect

Time: ✅ 0.591µs (SLO: <10.000µs 📉 -94.1%) vs baseline: +1.8%

Memory: ✅ 39.892MB (SLO: <41.000MB -2.7%) vs baseline: +5.0%

✅ otelsdkspan - 24/24

✅ add-event

Time: ✅ 40.385ms (SLO: <42.000ms -3.8%) vs baseline: -0.2%

Memory: ✅ 37.021MB (SLO: <39.000MB -5.1%) vs baseline: +4.9%

✅ add-link

Time: ✅ 36.236ms (SLO: <38.550ms -6.0%) vs baseline: -0.3%

Memory: ✅ 36.982MB (SLO: <39.000MB -5.2%) vs baseline: +4.9%

✅ add-metrics

Time: ✅ 219.852ms (SLO: <232.000ms -5.2%) vs baseline: -0.1%

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

✅ add-tags

Time: ✅ 211.418ms (SLO: <221.600ms -4.6%) vs baseline: +0.4%

Memory: ✅ 37.002MB (SLO: <39.000MB -5.1%) vs baseline: +4.6%

✅ get-context

Time: ✅ 29.132ms (SLO: <31.300ms -6.9%) vs baseline: +0.7%

Memory: ✅ 37.041MB (SLO: <39.000MB -5.0%) vs baseline: +4.7%

✅ is-recording

Time: ✅ 29.134ms (SLO: <31.000ms -6.0%) vs baseline: -0.2%

Memory: ✅ 36.923MB (SLO: <39.000MB -5.3%) vs baseline: +4.7%

✅ record-exception

Time: ✅ 63.044ms (SLO: <65.850ms -4.3%) vs baseline: -0.1%

Memory: ✅ 37.100MB (SLO: <39.000MB -4.9%) vs baseline: +5.1%

✅ set-status

Time: ✅ 31.929ms (SLO: <34.150ms -6.5%) vs baseline: +0.3%

Memory: ✅ 37.061MB (SLO: <39.000MB -5.0%) vs baseline: +5.0%

✅ start

Time: ✅ 28.748ms (SLO: <30.150ms -4.6%) vs baseline: -0.6%

Memory: ✅ 36.962MB (SLO: <39.000MB -5.2%) vs baseline: +4.4%

✅ start-finish

Time: ✅ 33.872ms (SLO: <35.350ms -4.2%) vs baseline: -0.3%

Memory: ✅ 37.002MB (SLO: <39.000MB -5.1%) vs baseline: +4.7%

✅ start-finish-telemetry

Time: ✅ 33.711ms (SLO: <35.450ms -4.9%) vs baseline: -0.4%

Memory: ✅ 37.061MB (SLO: <39.000MB -5.0%) vs baseline: +5.0%

✅ update-name

Time: ✅ 31.031ms (SLO: <33.400ms -7.1%) vs baseline: +0.3%

Memory: ✅ 37.061MB (SLO: <39.000MB -5.0%) vs baseline: +4.9%

✅ otelspan - 22/22

✅ add-event

Time: ✅ 38.496ms (SLO: <47.150ms 📉 -18.4%) vs baseline: -0.2%

Memory: ✅ 39.016MB (SLO: <47.000MB 📉 -17.0%) vs baseline: +4.5%

✅ add-metrics

Time: ✅ 258.811ms (SLO: <344.800ms 📉 -24.9%) vs baseline: +0.8%

Memory: ✅ 43.276MB (SLO: <47.500MB -8.9%) vs baseline: +4.5%

✅ add-tags

Time: ✅ 311.896ms (SLO: <321.000ms -2.8%) vs baseline: -0.8%

Memory: ✅ 43.352MB (SLO: <47.500MB -8.7%) vs baseline: +4.7%

✅ get-context

Time: ✅ 78.739ms (SLO: <92.350ms 📉 -14.7%) vs baseline: +0.2%

Memory: ✅ 39.444MB (SLO: <46.500MB 📉 -15.2%) vs baseline: +5.1%

✅ is-recording

Time: ✅ 36.383ms (SLO: <44.500ms 📉 -18.2%) vs baseline: +1.0%

Memory: ✅ 38.955MB (SLO: <47.500MB 📉 -18.0%) vs baseline: +4.8%

✅ record-exception

Time: ✅ 57.193ms (SLO: <67.650ms 📉 -15.5%) vs baseline: ~same

Memory: ✅ 39.481MB (SLO: <47.000MB 📉 -16.0%) vs baseline: +4.9%

✅ set-status

Time: ✅ 42.555ms (SLO: <50.400ms 📉 -15.6%) vs baseline: +0.2%

Memory: ✅ 38.934MB (SLO: <47.000MB 📉 -17.2%) vs baseline: +4.6%

✅ start

Time: ✅ 35.468ms (SLO: <43.450ms 📉 -18.4%) vs baseline: +0.2%

Memory: ✅ 38.923MB (SLO: <47.000MB 📉 -17.2%) vs baseline: +4.6%

✅ start-finish

Time: ✅ 82.168ms (SLO: <88.000ms -6.6%) vs baseline: ~same

Memory: ✅ 36.726MB (SLO: <46.500MB 📉 -21.0%) vs baseline: +4.9%

✅ start-finish-telemetry

Time: ✅ 83.409ms (SLO: <89.000ms -6.3%) vs baseline: -0.4%

Memory: ✅ 36.726MB (SLO: <46.500MB 📉 -21.0%) vs baseline: +5.0%

✅ update-name

Time: ✅ 37.100ms (SLO: <45.150ms 📉 -17.8%) vs baseline: +0.4%

Memory: ✅ 39.050MB (SLO: <47.000MB 📉 -16.9%) vs baseline: +5.0%

✅ packagespackageforrootmodulemapping - 4/4

✅ cache_off

Time: ✅ 345.214ms (SLO: <354.300ms -2.6%) vs baseline: +0.9%

Memory: ✅ 40.496MB (SLO: <41.500MB -2.4%) vs baseline: +5.0%

✅ cache_on

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

Memory: ✅ 38.257MB (SLO: <41.000MB -6.7%) vs baseline: +4.6%

✅ packagesupdateimporteddependencies - 24/24

✅ import_many

Time: ✅ 155.581µs (SLO: <170.000µs -8.5%) vs baseline: +0.1%

Memory: ✅ 39.143MB (SLO: <41.000MB -4.5%) vs baseline: +4.5%

✅ import_many_cached

Time: ✅ 121.107µs (SLO: <130.000µs -6.8%) vs baseline: -0.4%

Memory: ✅ 39.208MB (SLO: <41.000MB -4.4%) vs baseline: +4.8%

✅ import_many_stdlib

Time: ✅ 1.651ms (SLO: <1.750ms -5.7%) vs baseline: -0.8%

Memory: ✅ 39.512MB (SLO: <41.000MB -3.6%) vs baseline: +5.3%

✅ import_many_stdlib_cached

Time: ✅ 0.997ms (SLO: <1.100ms -9.4%) vs baseline: -0.5%

Memory: ✅ 39.342MB (SLO: <41.000MB -4.0%) vs baseline: +4.8%

✅ import_many_unknown

Time: ✅ 828.576µs (SLO: <890.000µs -6.9%) vs baseline: -1.7%

Memory: ✅ 39.419MB (SLO: <41.000MB -3.9%) vs baseline: +5.6%

✅ import_many_unknown_cached

Time: ✅ 789.254µs (SLO: <870.000µs -9.3%) vs baseline: -0.2%

Memory: ✅ 39.378MB (SLO: <41.000MB -4.0%) vs baseline: +4.6%

✅ import_one

Time: ✅ 19.700µs (SLO: <30.000µs 📉 -34.3%) vs baseline: +0.2%

Memory: ✅ 39.229MB (SLO: <41.000MB -4.3%) vs baseline: +5.0%

✅ import_one_cache

Time: ✅ 6.286µs (SLO: <10.000µs 📉 -37.1%) vs baseline: +0.3%

Memory: ✅ 39.003MB (SLO: <41.000MB -4.9%) vs baseline: +4.2%

✅ import_one_stdlib

Time: ✅ 18.725µs (SLO: <20.000µs -6.4%) vs baseline: +0.4%

Memory: ✅ 39.072MB (SLO: <41.000MB -4.7%) vs baseline: +4.3%

✅ import_one_stdlib_cache

Time: ✅ 6.276µs (SLO: <10.000µs 📉 -37.2%) vs baseline: ~same

Memory: ✅ 39.276MB (SLO: <41.000MB -4.2%) vs baseline: +5.1%

✅ import_one_unknown

Time: ✅ 45.657µs (SLO: <50.000µs -8.7%) vs baseline: +0.8%

Memory: ✅ 39.125MB (SLO: <41.000MB -4.6%) vs baseline: +4.7%

✅ import_one_unknown_cache

Time: ✅ 6.247µs (SLO: <10.000µs 📉 -37.5%) vs baseline: -0.1%

Memory: ✅ 39.200MB (SLO: <41.000MB -4.4%) vs baseline: +4.8%

✅ ratelimiter - 12/12

✅ defaults

Time: ✅ 2.366µs (SLO: <10.000µs 📉 -76.3%) vs baseline: +2.5%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ high_rate_limit

Time: ✅ 2.384µs (SLO: <10.000µs 📉 -76.2%) vs baseline: ~same

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

✅ long_window

Time: ✅ 2.340µs (SLO: <10.000µs 📉 -76.6%) vs baseline: +0.1%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.1%

✅ low_rate_limit

Time: ✅ 2.335µs (SLO: <10.000µs 📉 -76.6%) vs baseline: +0.1%

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

✅ no_rate_limit

Time: ✅ 0.824µs (SLO: <10.000µs 📉 -91.8%) vs baseline: +0.6%

Memory: ✅ 34.583MB (SLO: <35.500MB -2.6%) vs baseline: +4.6%

✅ short_window

Time: ✅ 2.473µs (SLO: <10.000µs 📉 -75.3%) vs baseline: +0.1%

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

✅ recursivecomputation - 8/8

✅ deep

Time: ✅ 307.885ms (SLO: <320.950ms -4.1%) vs baseline: -0.4%

Memory: ✅ 35.409MB (SLO: <36.500MB -3.0%) vs baseline: +4.4%

✅ deep-profiled

Time: ✅ 330.215ms (SLO: <359.150ms -8.1%) vs baseline: -0.2%

Memory: ✅ 39.282MB (SLO: <40.500MB -3.0%) vs baseline: +4.8%

✅ medium

Time: ✅ 7.017ms (SLO: <7.400ms -5.2%) vs baseline: +0.2%

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%) vs baseline: +5.4%

✅ shallow

Time: ✅ 0.941ms (SLO: <1.050ms 📉 -10.4%) vs baseline: +0.5%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +4.8%

✅ samplingrules - 8/8

✅ average_match

Time: ✅ 137.784µs (SLO: <290.000µs 📉 -52.5%) vs baseline: +0.2%

Memory: ✅ 34.524MB (SLO: <35.500MB -2.7%) vs baseline: +4.7%

✅ high_match

Time: ✅ 173.384µs (SLO: <480.000µs 📉 -63.9%) vs baseline: -0.4%

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

✅ low_match

Time: ✅ 98.036µs (SLO: <120.000µs 📉 -18.3%) vs baseline: -0.3%

Memory: ✅ 603.216MB (SLO: <700.000MB 📉 -13.8%) vs baseline: +4.9%

✅ very_low_match

Time: ✅ 2.664ms (SLO: <8.500ms 📉 -68.7%) vs baseline: ~same

Memory: ✅ 70.563MB (SLO: <75.000MB -5.9%) vs baseline: +4.8%

✅ sethttpmeta - 32/32

✅ all-disabled

Time: ✅ 10.682µs (SLO: <20.000µs 📉 -46.6%) vs baseline: +1.8%

Memory: ✅ 35.075MB (SLO: <36.000MB -2.6%) vs baseline: +4.9%

✅ all-enabled

Time: ✅ 39.788µs (SLO: <50.000µs 📉 -20.4%) vs baseline: +0.6%

Memory: ✅ 35.095MB (SLO: <36.000MB -2.5%) vs baseline: +5.0%

✅ collectipvariant_exists

Time: ✅ 40.727µs (SLO: <50.000µs 📉 -18.5%) vs baseline: +0.7%

Memory: ✅ 35.095MB (SLO: <36.000MB -2.5%) vs baseline: +5.1%

✅ no-collectipvariant

Time: ✅ 40.662µs (SLO: <50.000µs 📉 -18.7%) vs baseline: +2.0%

Memory: ✅ 34.996MB (SLO: <36.000MB -2.8%) vs baseline: +4.8%

✅ no-useragentvariant

Time: ✅ 38.705µs (SLO: <50.000µs 📉 -22.6%) vs baseline: +0.5%

Memory: ✅ 35.016MB (SLO: <36.000MB -2.7%) vs baseline: +4.9%

✅ obfuscation-no-query

Time: ✅ 40.466µs (SLO: <50.000µs 📉 -19.1%) vs baseline: +0.1%

Memory: ✅ 34.996MB (SLO: <36.000MB -2.8%) vs baseline: +4.7%

✅ obfuscation-regular-case-explicit-query

Time: ✅ 75.597µs (SLO: <90.000µs 📉 -16.0%) vs baseline: ~same

Memory: ✅ 35.055MB (SLO: <36.500MB -4.0%) vs baseline: +4.3%

✅ obfuscation-regular-case-implicit-query

Time: ✅ 77.351µs (SLO: <90.000µs 📉 -14.1%) vs baseline: +1.6%

Memory: ✅ 35.075MB (SLO: <36.500MB -3.9%) vs baseline: +4.1%

✅ obfuscation-send-querystring-disabled

Time: ✅ 155.754µs (SLO: <170.000µs -8.4%) vs baseline: +1.1%

Memory: ✅ 35.429MB (SLO: <36.500MB -2.9%) vs baseline: +5.1%

✅ obfuscation-worst-case-explicit-query

Time: ✅ 148.536µs (SLO: <160.000µs -7.2%) vs baseline: +0.2%

Memory: ✅ 35.448MB (SLO: <36.500MB -2.9%) vs baseline: +5.1%

✅ obfuscation-worst-case-implicit-query

Time: ✅ 156.282µs (SLO: <170.000µs -8.1%) vs baseline: +1.1%

Memory: ✅ 35.409MB (SLO: <36.500MB -3.0%) vs baseline: +4.9%

✅ useragentvariant_exists_1

Time: ✅ 40.155µs (SLO: <50.000µs 📉 -19.7%) vs baseline: +2.0%

Memory: ✅ 34.996MB (SLO: <36.000MB -2.8%) vs baseline: +5.0%

✅ useragentvariant_exists_2

Time: ✅ 40.566µs (SLO: <50.000µs 📉 -18.9%) vs baseline: +0.8%

Memory: ✅ 35.036MB (SLO: <36.000MB -2.7%) vs baseline: +5.1%

✅ useragentvariant_exists_3

Time: ✅ 40.007µs (SLO: <50.000µs 📉 -20.0%) vs baseline: +0.4%

Memory: ✅ 35.055MB (SLO: <36.000MB -2.6%) vs baseline: +4.8%

✅ useragentvariant_not_exists_1

Time: ✅ 39.599µs (SLO: <50.000µs 📉 -20.8%) vs baseline: +0.9%

Memory: ✅ 35.036MB (SLO: <36.000MB -2.7%) vs baseline: +4.7%

✅ useragentvariant_not_exists_2

Time: ✅ 39.253µs (SLO: <50.000µs 📉 -21.5%) vs baseline: -0.2%

Memory: ✅ 35.095MB (SLO: <36.000MB -2.5%) vs baseline: +4.9%

✅ span - 26/26

✅ add-event

Time: ✅ 16.659ms (SLO: <22.500ms 📉 -26.0%) vs baseline: ~same

Memory: ✅ 36.550MB (SLO: <53.000MB 📉 -31.0%) vs baseline: +4.9%

✅ add-metrics

Time: ✅ 86.815ms (SLO: <93.500ms -7.1%) vs baseline: +0.5%

Memory: ✅ 40.858MB (SLO: <53.000MB 📉 -22.9%) vs baseline: +4.9%

✅ add-tags

Time: ✅ 138.478ms (SLO: <155.000ms 📉 -10.7%) vs baseline: +0.3%

Memory: ✅ 40.521MB (SLO: <53.000MB 📉 -23.5%) vs baseline: +5.0%

✅ get-context

Time: ✅ 16.075ms (SLO: <20.500ms 📉 -21.6%) vs baseline: +3.0%

Memory: ✅ 36.257MB (SLO: <53.000MB 📉 -31.6%) vs baseline: +4.5%

✅ is-recording

Time: ✅ 15.817ms (SLO: <20.500ms 📉 -22.8%) vs baseline: +0.9%

Memory: ✅ 36.345MB (SLO: <53.000MB 📉 -31.4%) vs baseline: +4.8%

✅ record-exception

Time: ✅ 33.646ms (SLO: <40.000ms 📉 -15.9%) vs baseline: +0.3%

Memory: ✅ 36.943MB (SLO: <53.000MB 📉 -30.3%) vs baseline: +4.8%

✅ set-status

Time: ✅ 17.643ms (SLO: <22.000ms 📉 -19.8%) vs baseline: +2.8%

Memory: ✅ 36.344MB (SLO: <53.000MB 📉 -31.4%) vs baseline: +4.9%

✅ start

Time: ✅ 15.464ms (SLO: <20.500ms 📉 -24.6%) vs baseline: ~same

Memory: ✅ 36.319MB (SLO: <53.000MB 📉 -31.5%) vs baseline: +5.0%

✅ start-finish

Time: ✅ 49.834ms (SLO: <52.500ms -5.1%) vs baseline: +0.9%

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

✅ start-finish-telemetry

Time: ✅ 50.913ms (SLO: <54.500ms -6.6%) vs baseline: +0.9%

Memory: ✅ 34.721MB (SLO: <35.500MB -2.2%) vs baseline: +5.3%

✅ start-finish-traceid128

Time: ✅ 51.889ms (SLO: <57.000ms -9.0%) vs baseline: -0.5%

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%) vs baseline: +5.0%

✅ start-traceid128

Time: ✅ 15.849ms (SLO: <22.500ms 📉 -29.6%) vs baseline: +1.2%

Memory: ✅ 36.432MB (SLO: <53.000MB 📉 -31.3%) vs baseline: +4.8%

✅ update-name

Time: ✅ 15.935ms (SLO: <22.000ms 📉 -27.6%) vs baseline: +0.4%

Memory: ✅ 36.413MB (SLO: <53.000MB 📉 -31.3%) vs baseline: +4.7%

✅ tracer - 6/6

✅ large

Time: ✅ 29.238ms (SLO: <32.950ms 📉 -11.3%) vs baseline: +0.7%

Memory: ✅ 35.684MB (SLO: <36.500MB -2.2%) vs baseline: +4.7%

✅ medium

Time: ✅ 2.880ms (SLO: <3.200ms 📉 -10.0%) vs baseline: ~same

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

✅ small

Time: ✅ 329.352µs (SLO: <370.000µs 📉 -11.0%) vs baseline: +0.4%

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

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 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

vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch 5 times, most recently from 334e0f5 to 703ce51 Compare November 19, 2025 22:43

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 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 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

vlad-scherbich changed the title ~~feat(profiling): add profiling of threading.Semaphore objects to Python Lock Profiler~~ feat(profiling): implement profiling of threading.Semaphore objects in Python Lock Profiler Nov 19, 2025

vlad-scherbich changed the title ~~feat(profiling): implement profiling of threading.Semaphore objects in Python Lock Profiler~~ feat(profiling): implement profiling of threading.Semaphore objects in Python Lock profiler Nov 19, 2025

vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch 10 times, most recently from e4ffe7b to 36b7ed5 Compare November 20, 2025 18:33

vlad-scherbich marked this pull request as ready for review November 20, 2025 18:34

vlad-scherbich requested review from a team as code owners November 20, 2025 18:34

vlad-scherbich requested review from Kyle-Verhoog and nsrip-dd November 20, 2025 18:34

vlad-scherbich requested a review from brettlangdon November 20, 2025 18:34

vlad-scherbich changed the title ~~feat(profiling): implement profiling of threading.Semaphore objects in Python Lock profiler~~ feat(profiling): implement profiling of threading.Semaphore primitives in Python Lock profiler Nov 20, 2025

vlad-scherbich changed the title ~~feat(profiling): implement profiling of threading.Semaphore primitives in Python Lock profiler~~ feat(profiling): profile threading.Semaphore primitives in Python Lock profiler Nov 20, 2025

vlad-scherbich changed the title ~~feat(profiling): profile threading.Semaphore primitives in Python Lock profiler~~ feat(profiling): profile threading.Semaphore primitives with Python Lock profiler Nov 20, 2025

vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch from d57fa82 to ae2c3c9 Compare November 20, 2025 20:20

vlad-scherbich marked this pull request as draft November 20, 2025 23:48

add support for profiling threading.Semaphore objects in Lock profiler

2fd568c

vlad-scherbich force-pushed the vlad/proflock-implement-semaphore branch from ae2c3c9 to 2fd568c Compare November 20, 2025 23:49

feat(profiling): profile threading.Semaphore primitives with Python Lock profiler #15327

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feat(profiling): profile threading.Semaphore primitives with Python Lock profiler #15327

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Description

What

Why

Changes

Testing

Implementation Notes

Performance Impact

Risk

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Bootstrap import analysis

Summary

Import time breakdown

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Performance SLOs

✅ add_aspect

✅ add_inplace_aspect

✅ add_inplace_noaspect

✅ add_noaspect

✅ bytearray_aspect

✅ bytearray_extend_aspect

✅ bytearray_extend_noaspect

✅ bytearray_noaspect

✅ bytes_aspect

✅ bytes_noaspect

✅ bytesio_aspect

✅ bytesio_noaspect

✅ capitalize_aspect

✅ capitalize_noaspect

✅ casefold_aspect

✅ casefold_noaspect

✅ decode_aspect

✅ decode_noaspect

✅ encode_aspect

✅ encode_noaspect

✅ format_aspect

✅ format_map_aspect

✅ format_map_noaspect

✅ format_noaspect

✅ index_aspect

✅ index_noaspect

✅ join_aspect

✅ join_noaspect

✅ ljust_aspect

✅ ljust_noaspect

✅ lower_aspect

✅ lower_noaspect

✅ lstrip_aspect

✅ lstrip_noaspect

✅ modulo_aspect

✅ modulo_aspect_for_bytearray_bytearray

✅ modulo_aspect_for_bytes

✅ modulo_aspect_for_bytes_bytearray

✅ modulo_noaspect

✅ replace_aspect

✅ replace_noaspect

✅ repr_aspect

✅ repr_noaspect

✅ rstrip_aspect

✅ rstrip_noaspect

✅ slice_aspect

✅ slice_noaspect

✅ stringio_aspect

✅ stringio_noaspect

✅ strip_aspect

✅ strip_noaspect

✅ swapcase_aspect

✅ swapcase_noaspect

feat(profiling): profile `threading.Semaphore` primitives with Python Lock profiler #15327

feat(profiling): profile `threading.Semaphore` primitives with Python Lock profiler #15327

vlad-scherbich commented Nov 18, 2025 •

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