fix(internal): detach threads if joinable before destroying [backport 4.6] by juanjux · Pull Request #17335 · DataDog/dd-trace-py

juanjux · 2026-04-06T14:22:35Z

Backport of #17297

## Description We have a possible situation where we can end up with orphaned `ThreadRestartTimer` threads in fork-heavy applications. If a fork occurs while the current `ThreadRestartTimer` thread is in the stopping state (after `cls._instance = None` has already been called) then it will appear in `periodic_threads` and be added to `_threads_to_restart_after_fork` and then force restarted. ## Testing  ## Risks  ## Additional Notes This bug is really really hard to reproduce and technically shouldn't be possible because the GIL should be held throughout the whole `os.fork()` call, but this is a code path which could cause some of the crashes we've seen in a fork-heavy application and is an easy defensive guard to add. Co-authored-by: juanjux <juanjo.alvarezmartinez@datadoghq.com> (cherry picked from commit 96352ec)

## Description This fixes a crash that can happen post-fork in fork-heavy workloads. ``` Error UnixSignal: Process terminated with SI_TKILL (SIGABRT) #0 0x00007ed5f6d869fc pthread_kill #1 0x00007ed5f6d32476 gsignal #2 0x00007ed5f6d187f3 abort #3 0x00007ed5f4fdf277 std::terminate #4 0x00007ed5c34737e6 PeriodicThread__after_fork #5 0x0000627d348a79b8 method_vectorcall_VARARGS_KEYWORDS (/usr/src/python/Objects/descrobject.c:365:14) #6 0x0000627d34847ea8 _PyObject_VectorcallTstate (/usr/src/python/./Include/internal/pycore_call.h:92:11) #7 0x0000627d34847ea8 PyObject_Vectorcall (/usr/src/python/Objects/call.c:325:12) #8 0x0000627d3486ec97 _PyEval_EvalFrameDefault (/usr/src/python/Python/bytecodes.c:2715:19) #9 0x0000627d34848e86 _PyObject_VectorcallTstate (/usr/src/python/./Include/internal/pycore_call.h:92:11) #10 0x0000627d34848e86 method_vectorcall (/usr/src/python/Objects/classobject.c:69:20) #11 0x0000627d34847a94 _PyObject_VectorcallTstate (/usr/src/python/./Include/internal/pycore_call.h:92:11) #12 0x00007ed5c3474631 std::thread::_State_impl<std::thread::_Invoker<std::tuple<_PeriodicThread_do_start(periodic_thread*, bool)::{lambda()#1}> > >::_M_run #13 0x00007ed5c3474e10 execute_native_thread_routine ``` _See IR-50207 for more details._ Co-authored-by: brettlangdon <brett.langdon@datadoghq.com> (cherry picked from commit 56acdf4)

cit-pr-commenter-54b7da · 2026-04-06T14:23:53Z

Codeowners resolved as

ddtrace/internal/_threads.cpp                                           @DataDog/apm-core-python
releasenotes/notes/internal-periodic-thread-crash-after-fork-4d1571830c582d21.yaml  @DataDog/apm-python

datadog-datadog-prod-us1-2 · 2026-04-06T14:33:00Z

⚠️ Tests

✨ Fix all issues with BitsAI or with Cursor

⚠️ Warnings

🧪 1 Test failed

❄️ Known flaky: test_distributed_tracing_propagation_no_producer_span[True][py3.14] from test_integration.py

(Fix with Cursor)

Traceback (most recent call last):
    File "/go/src/github.com/DataDog/apm-reliability/dd-trace-py/.riot/venv_py3140_mock_pytest_pytest-mock_coverage_pytest-cov_opentracing_hypothesis6451_more_itertools8110_pytest-randomly_celery[redis]/lib/python3.14/site-packages/celery/backends/asynchronous.py", line 287, in _wait_for_pending
      for _ in self.drain_events_until(
               ~~~~~~~~~~~~~~~~~~~~~~~^
              result.on_ready, timeout=timeout,
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
              on_interval=on_interval):
              ^^^^^^^^^^^^^^^^^^^^^^^^
    File "/go/src/github.com/DataDog/apm-reliability/dd-trace-py/.riot/venv_py3140_mock_pytest_pytest-mock_coverage_pytest-cov_opentracing_hypothesis6451_more_itertools8110_pytest-randomly_celery[redis]/lib/python3.14/site-packages/celery/backends/asynchronous.py", line 52, in drain_events_until
      raise socket.timeout()
...

ℹ️ Info

No other issues found (see more)

❄️ No new flaky tests detected

_{This comment will be updated automatically if new data arrives.

🔗 Commit SHA: 3e655ab | Docs | Datadog PR Page | Was this helpful? React with 👍/👎 or give us feedback!}

pr-commenter · 2026-04-06T14:59:23Z

Performance SLOs

Comparing candidate juanjux/kowalski/fix-internal-detach-threads-if-joinable-before-destroying-backport-4.6 (3e655ab) with baseline 4.6 (906ceb5)

📈 Performance Regressions (2 suites)

📈 iastaspects - 118/118

✅ add_aspect

Time: ✅ 108.294µs (SLO: <130.000µs 📉 -16.7%) vs baseline: +3.6%

Memory: ✅ 43.315MB (SLO: <46.000MB -5.8%) vs baseline: +4.6%

✅ add_inplace_aspect

Time: ✅ 105.027µs (SLO: <130.000µs 📉 -19.2%) vs baseline: -0.6%

Memory: ✅ 43.334MB (SLO: <46.000MB -5.8%) vs baseline: +5.1%

✅ add_inplace_noaspect

Time: ✅ 28.327µs (SLO: <40.000µs 📉 -29.2%) vs baseline: +0.7%

Memory: ✅ 43.710MB (SLO: <46.000MB -5.0%) vs baseline: +5.1%

✅ add_noaspect

Time: ✅ 48.876µs (SLO: <70.000µs 📉 -30.2%) vs baseline: ~same

Memory: ✅ 43.638MB (SLO: <46.000MB -5.1%) vs baseline: +4.9%

✅ bytearray_aspect

Time: ✅ 251.676µs (SLO: <400.000µs 📉 -37.1%) vs baseline: -0.5%

Memory: ✅ 43.342MB (SLO: <46.000MB -5.8%) vs baseline: +4.2%

✅ bytearray_extend_aspect

Time: ✅ 641.400µs (SLO: <800.000µs 📉 -19.8%) vs baseline: -1.1%

Memory: ✅ 43.381MB (SLO: <46.000MB -5.7%) vs baseline: +4.5%

✅ bytearray_extend_noaspect

Time: ✅ 263.625µs (SLO: <400.000µs 📉 -34.1%) vs baseline: -1.5%

Memory: ✅ 43.707MB (SLO: <46.000MB -5.0%) vs baseline: +5.1%

✅ bytearray_noaspect

Time: ✅ 134.986µs (SLO: <300.000µs 📉 -55.0%) vs baseline: +0.2%

Memory: ✅ 43.657MB (SLO: <46.000MB -5.1%) vs baseline: +5.0%

✅ bytes_aspect

Time: ✅ 218.323µs (SLO: <300.000µs 📉 -27.2%) vs baseline: +1.2%

Memory: ✅ 43.359MB (SLO: <46.000MB -5.7%) vs baseline: +5.3%

✅ bytes_noaspect

Time: ✅ 131.202µs (SLO: <200.000µs 📉 -34.4%) vs baseline: -0.8%

Memory: ✅ 43.599MB (SLO: <46.000MB -5.2%) vs baseline: +4.7%

✅ bytesio_aspect

Time: ✅ 3.753ms (SLO: <5.000ms 📉 -24.9%) vs baseline: -0.3%

Memory: ✅ 43.334MB (SLO: <46.000MB -5.8%) vs baseline: +4.5%

✅ bytesio_noaspect

Time: ✅ 311.998µs (SLO: <420.000µs 📉 -25.7%) vs baseline: +0.6%

Memory: ✅ 43.587MB (SLO: <46.000MB -5.2%) vs baseline: +4.6%

✅ capitalize_aspect

Time: ✅ 88.209µs (SLO: <300.000µs 📉 -70.6%) vs baseline: ~same

Memory: ✅ 43.292MB (SLO: <46.000MB -5.9%) vs baseline: +4.7%

✅ capitalize_noaspect

Time: ✅ 250.965µs (SLO: <300.000µs 📉 -16.3%) vs baseline: +0.4%

Memory: ✅ 43.657MB (SLO: <46.000MB -5.1%) vs baseline: +4.7%

✅ casefold_aspect

Time: ✅ 91.404µs (SLO: <500.000µs 📉 -81.7%) vs baseline: +3.7%

Memory: ✅ 43.255MB (SLO: <46.000MB -6.0%) vs baseline: +4.1%

✅ casefold_noaspect

Time: ✅ 303.514µs (SLO: <500.000µs 📉 -39.3%) vs baseline: +0.2%

Memory: ✅ 43.595MB (SLO: <46.000MB -5.2%) vs baseline: +4.6%

✅ decode_aspect

Time: ✅ 86.613µs (SLO: <100.000µs 📉 -13.4%) vs baseline: +0.4%

Memory: ✅ 43.380MB (SLO: <46.000MB -5.7%) vs baseline: +4.8%

✅ decode_noaspect

Time: ✅ 152.709µs (SLO: <210.000µs 📉 -27.3%) vs baseline: +1.3%

Memory: ✅ 43.580MB (SLO: <46.000MB -5.3%) vs baseline: +4.6%

✅ encode_aspect

Time: ✅ 84.054µs (SLO: <200.000µs 📉 -58.0%) vs baseline: -0.3%

Memory: ✅ 43.361MB (SLO: <46.000MB -5.7%) vs baseline: +4.8%

✅ encode_noaspect

Time: ✅ 136.972µs (SLO: <200.000µs 📉 -31.5%) vs baseline: -1.3%

Memory: ✅ 43.581MB (SLO: <46.000MB -5.3%) vs baseline: +4.6%

✅ format_aspect

Time: ✅ 14.548ms (SLO: <19.200ms 📉 -24.2%) vs baseline: -0.4%

Memory: ✅ 43.620MB (SLO: <46.000MB -5.2%) vs baseline: +4.9%

✅ format_map_aspect

Time: ✅ 16.471ms (SLO: <21.500ms 📉 -23.4%) vs baseline: +0.4%

Memory: ✅ 43.502MB (SLO: <46.000MB -5.4%) vs baseline: +5.2%

✅ format_map_noaspect

Time: ✅ 369.110µs (SLO: <500.000µs 📉 -26.2%) vs baseline: +1.2%

Memory: ✅ 43.645MB (SLO: <46.000MB -5.1%) vs baseline: +4.9%

✅ format_noaspect

Time: ✅ 306.354µs (SLO: <500.000µs 📉 -38.7%) vs baseline: +1.3%

Memory: ✅ 43.535MB (SLO: <46.000MB -5.4%) vs baseline: +4.6%

✅ index_aspect

Time: ✅ 122.290µs (SLO: <300.000µs 📉 -59.2%) vs baseline: +0.4%

Memory: ✅ 43.333MB (SLO: <46.000MB -5.8%) vs baseline: +4.6%

✅ index_noaspect

Time: ✅ 40.854µs (SLO: <300.000µs 📉 -86.4%) vs baseline: +0.8%

Memory: ✅ 43.640MB (SLO: <46.000MB -5.1%) vs baseline: +4.8%

✅ join_aspect

Time: ✅ 211.044µs (SLO: <300.000µs 📉 -29.7%) vs baseline: -0.6%

Memory: ✅ 43.426MB (SLO: <46.000MB -5.6%) vs baseline: +5.0%

✅ join_noaspect

Time: ✅ 139.903µs (SLO: <300.000µs 📉 -53.4%) vs baseline: -1.3%

Memory: ✅ 43.604MB (SLO: <46.000MB -5.2%) vs baseline: +4.7%

✅ ljust_aspect

Time: ✅ 496.718µs (SLO: <700.000µs 📉 -29.0%) vs baseline: -1.6%

Memory: ✅ 43.235MB (SLO: <46.000MB -6.0%) vs baseline: +4.8%

✅ ljust_noaspect

Time: ✅ 254.376µs (SLO: <300.000µs 📉 -15.2%) vs baseline: +0.1%

Memory: ✅ 43.607MB (SLO: <46.000MB -5.2%) vs baseline: +4.8%

✅ lower_aspect

Time: ✅ 291.950µs (SLO: <500.000µs 📉 -41.6%) vs baseline: -1.0%

Memory: ✅ 43.314MB (SLO: <46.000MB -5.8%) vs baseline: +4.7%

✅ lower_noaspect

Time: ✅ 237.284µs (SLO: <300.000µs 📉 -20.9%) vs baseline: -0.1%

Memory: ✅ 43.613MB (SLO: <46.000MB -5.2%) vs baseline: +4.9%

✅ lstrip_aspect

Time: ✅ 0.314ms (SLO: <3.000ms 📉 -89.5%) vs baseline: 📈 +16.0%

Memory: ✅ 43.417MB (SLO: <46.000MB -5.6%) vs baseline: +5.3%

✅ lstrip_noaspect

Time: ✅ 0.175ms (SLO: <3.000ms 📉 -94.2%) vs baseline: -0.7%

Memory: ✅ 43.575MB (SLO: <46.000MB -5.3%) vs baseline: +4.6%

✅ modulo_aspect

Time: ✅ 14.264ms (SLO: <18.750ms 📉 -23.9%) vs baseline: +0.3%

Memory: ✅ 43.491MB (SLO: <46.000MB -5.5%) vs baseline: +5.0%

✅ modulo_aspect_for_bytearray_bytearray

Time: ✅ 15.031ms (SLO: <19.350ms 📉 -22.3%) vs baseline: +1.3%

Memory: ✅ 43.601MB (SLO: <46.000MB -5.2%) vs baseline: +5.6%

✅ modulo_aspect_for_bytes

Time: ✅ 14.395ms (SLO: <18.900ms 📉 -23.8%) vs baseline: -0.3%

Memory: ✅ 43.480MB (SLO: <46.000MB -5.5%) vs baseline: +4.6%

✅ modulo_aspect_for_bytes_bytearray

Time: ✅ 14.603ms (SLO: <19.150ms 📉 -23.7%) vs baseline: -0.4%

Memory: ✅ 43.574MB (SLO: <46.000MB -5.3%) vs baseline: +5.0%

✅ modulo_noaspect

Time: ✅ 0.364ms (SLO: <3.000ms 📉 -87.9%) vs baseline: +1.3%

Memory: ✅ 43.614MB (SLO: <46.000MB -5.2%) vs baseline: +4.9%

✅ replace_aspect

Time: ✅ 18.421ms (SLO: <24.000ms 📉 -23.2%) vs baseline: -0.1%

Memory: ✅ 43.478MB (SLO: <46.000MB -5.5%) vs baseline: +4.6%

✅ replace_noaspect

Time: ✅ 279.371µs (SLO: <300.000µs -6.9%) vs baseline: ~same

Memory: ✅ 43.568MB (SLO: <46.000MB -5.3%) vs baseline: +4.5%

✅ repr_aspect

Time: ✅ 312.074µs (SLO: <420.000µs 📉 -25.7%) vs baseline: +0.4%

Memory: ✅ 43.407MB (SLO: <46.000MB -5.6%) vs baseline: +5.0%

✅ repr_noaspect

Time: ✅ 46.711µs (SLO: <90.000µs 📉 -48.1%) vs baseline: -0.5%

Memory: ✅ 43.671MB (SLO: <46.000MB -5.1%) vs baseline: +4.9%

✅ rstrip_aspect

Time: ✅ 385.917µs (SLO: <500.000µs 📉 -22.8%) vs baseline: +0.2%

Memory: ✅ 43.449MB (SLO: <46.000MB -5.5%) vs baseline: +5.0%

✅ rstrip_noaspect

Time: ✅ 179.537µs (SLO: <300.000µs 📉 -40.2%) vs baseline: -0.6%

Memory: ✅ 43.548MB (SLO: <46.000MB -5.3%) vs baseline: +4.7%

✅ slice_aspect

Time: ✅ 184.036µs (SLO: <300.000µs 📉 -38.7%) vs baseline: -0.1%

Memory: ✅ 43.425MB (SLO: <46.000MB -5.6%) vs baseline: +4.8%

✅ slice_noaspect

Time: ✅ 53.800µs (SLO: <90.000µs 📉 -40.2%) vs baseline: -0.2%

Memory: ✅ 43.607MB (SLO: <46.000MB -5.2%) vs baseline: +4.9%

✅ stringio_aspect

Time: ✅ 3.819ms (SLO: <5.000ms 📉 -23.6%) vs baseline: ~same

Memory: ✅ 43.295MB (SLO: <46.000MB -5.9%) vs baseline: +4.5%

✅ stringio_noaspect

Time: ✅ 341.507µs (SLO: <500.000µs 📉 -31.7%) vs baseline: -0.6%

Memory: ✅ 43.684MB (SLO: <46.000MB -5.0%) vs baseline: +4.5%

✅ strip_aspect

Time: ✅ 268.537µs (SLO: <350.000µs 📉 -23.3%) vs baseline: -1.2%

Memory: ✅ 43.391MB (SLO: <46.000MB -5.7%) vs baseline: +5.2%

✅ strip_noaspect

Time: ✅ 177.236µs (SLO: <240.000µs 📉 -26.2%) vs baseline: +0.6%

Memory: ✅ 43.660MB (SLO: <46.000MB -5.1%) vs baseline: +4.7%

✅ swapcase_aspect

Time: ✅ 332.832µs (SLO: <500.000µs 📉 -33.4%) vs baseline: -0.7%

Memory: ✅ 43.496MB (SLO: <46.000MB -5.4%) vs baseline: +4.8%

✅ swapcase_noaspect

Time: ✅ 272.779µs (SLO: <400.000µs 📉 -31.8%) vs baseline: -0.2%

Memory: ✅ 43.665MB (SLO: <46.000MB -5.1%) vs baseline: +5.1%

✅ title_aspect

Time: ✅ 342.452µs (SLO: <500.000µs 📉 -31.5%) vs baseline: +7.4%

Memory: ✅ 43.252MB (SLO: <46.000MB -6.0%) vs baseline: +4.6%

✅ title_noaspect

Time: ✅ 259.835µs (SLO: <400.000µs 📉 -35.0%) vs baseline: ~same

Memory: ✅ 43.509MB (SLO: <46.000MB -5.4%) vs baseline: +4.5%

✅ translate_aspect

Time: ✅ 494.565µs (SLO: <700.000µs 📉 -29.3%) vs baseline: +0.2%

Memory: ✅ 43.183MB (SLO: <46.000MB -6.1%) vs baseline: +4.5%

✅ translate_noaspect

Time: ✅ 421.589µs (SLO: <500.000µs 📉 -15.7%) vs baseline: -1.8%

Memory: ✅ 43.696MB (SLO: <46.000MB -5.0%) vs baseline: +5.0%

✅ upper_aspect

Time: ✅ 295.704µs (SLO: <500.000µs 📉 -40.9%) vs baseline: ~same

Memory: ✅ 43.274MB (SLO: <46.000MB -5.9%) vs baseline: +4.4%

✅ upper_noaspect

Time: ✅ 234.077µs (SLO: <400.000µs 📉 -41.5%) vs baseline: -0.7%

Memory: ✅ 43.640MB (SLO: <46.000MB -5.1%) vs baseline: +5.0%

📈 iastaspectsospath - 24/24

✅ ospathbasename_aspect

Time: ✅ 488.713µs (SLO: <700.000µs 📉 -30.2%) vs baseline: 📈 +17.2%

Memory: ✅ 43.498MB (SLO: <46.000MB -5.4%) vs baseline: +5.6%

✅ ospathbasename_noaspect

Time: ✅ 422.326µs (SLO: <700.000µs 📉 -39.7%) vs baseline: -0.2%

Memory: ✅ 43.332MB (SLO: <46.000MB -5.8%) vs baseline: +4.6%

✅ ospathjoin_aspect

Time: ✅ 617.980µs (SLO: <700.000µs 📉 -11.7%) vs baseline: -0.1%

Memory: ✅ 43.301MB (SLO: <46.000MB -5.9%) vs baseline: +4.6%

✅ ospathjoin_noaspect

Time: ✅ 630.587µs (SLO: <700.000µs -9.9%) vs baseline: +0.9%

Memory: ✅ 43.321MB (SLO: <46.000MB -5.8%) vs baseline: +4.6%

✅ ospathnormcase_aspect

Time: ✅ 347.309µs (SLO: <700.000µs 📉 -50.4%) vs baseline: +0.3%

Memory: ✅ 43.291MB (SLO: <46.000MB -5.9%) vs baseline: +4.9%

✅ ospathnormcase_noaspect

Time: ✅ 354.384µs (SLO: <700.000µs 📉 -49.4%) vs baseline: +0.9%

Memory: ✅ 43.234MB (SLO: <46.000MB -6.0%) vs baseline: +4.5%

✅ ospathsplit_aspect

Time: ✅ 478.365µs (SLO: <700.000µs 📉 -31.7%) vs baseline: -0.5%

Memory: ✅ 43.278MB (SLO: <46.000MB -5.9%) vs baseline: +4.5%

✅ ospathsplit_noaspect

Time: ✅ 489.220µs (SLO: <700.000µs 📉 -30.1%) vs baseline: -0.6%

Memory: ✅ 43.136MB (SLO: <46.000MB -6.2%) vs baseline: +4.1%

✅ ospathsplitdrive_aspect

Time: ✅ 367.075µs (SLO: <700.000µs 📉 -47.6%) vs baseline: +0.2%

Memory: ✅ 43.470MB (SLO: <46.000MB -5.5%) vs baseline: +5.0%

✅ ospathsplitdrive_noaspect

Time: ✅ 73.251µs (SLO: <700.000µs 📉 -89.5%) vs baseline: +0.4%

Memory: ✅ 43.306MB (SLO: <46.000MB -5.9%) vs baseline: +4.8%

✅ ospathsplitext_aspect

Time: ✅ 449.022µs (SLO: <700.000µs 📉 -35.9%) vs baseline: ~same

Memory: ✅ 43.293MB (SLO: <46.000MB -5.9%) vs baseline: +4.7%

✅ ospathsplitext_noaspect

Time: ✅ 458.515µs (SLO: <700.000µs 📉 -34.5%) vs baseline: -0.3%

Memory: ✅ 43.293MB (SLO: <46.000MB -5.9%) vs baseline: +4.7%

🟡 Near SLO Breach (1 suite)

🟡 flasksimple - 18/18

✅ appsec-get

Time: ✅ 3.462ms (SLO: <4.750ms 📉 -27.1%) vs baseline: +0.5%

Memory: ✅ 55.396MB (SLO: <66.500MB 📉 -16.7%) vs baseline: +4.8%

✅ appsec-post

Time: ✅ 2.912ms (SLO: <6.750ms 📉 -56.9%) vs baseline: +0.1%

Memory: ✅ 55.679MB (SLO: <66.500MB 📉 -16.3%) vs baseline: +4.8%

✅ appsec-telemetry

Time: ✅ 3.436ms (SLO: <4.750ms 📉 -27.7%) vs baseline: +0.6%

Memory: ✅ 55.512MB (SLO: <66.500MB 📉 -16.5%) vs baseline: +4.9%

✅ debugger

Time: ✅ 1.879ms (SLO: <2.000ms -6.0%) vs baseline: ~same

Memory: ✅ 48.917MB (SLO: <51.500MB -5.0%) vs baseline: +4.7%

✅ iast-get

Time: ✅ 1.878ms (SLO: <2.000ms -6.1%) vs baseline: +0.4%

Memory: ✅ 45.886MB (SLO: <49.000MB -6.4%) vs baseline: +4.9%

✅ profiler

Time: ✅ 1.914ms (SLO: <2.100ms -8.9%) vs baseline: -0.1%

Memory: ✅ 51.979MB (SLO: <52.500MB 🟡 -1.0%) vs baseline: +5.0%

✅ resource-renaming

Time: ✅ 3.412ms (SLO: <3.650ms -6.5%) vs baseline: -0.3%

Memory: ✅ 55.513MB (SLO: <60.000MB -7.5%) vs baseline: +4.9%

✅ tracer

Time: ✅ 3.431ms (SLO: <3.650ms -6.0%) vs baseline: ~same

Memory: ✅ 55.481MB (SLO: <60.000MB -7.5%) vs baseline: +5.0%

✅ tracer-native

Time: ✅ 3.420ms (SLO: <3.650ms -6.3%) vs baseline: -0.3%

Memory: ✅ 55.418MB (SLO: <60.000MB -7.6%) vs baseline: +4.8%

⚠️ Unstable Tests (2 suites)

⚠️

coreapiscenario - 10/10 (1 unstable)

⚠️ context_with_data_listeners

Time: ⚠️ 13.345µs (SLO: <20.000µs 📉 -33.3%) vs baseline: -0.2%

Memory: ✅ 36.313MB (SLO: <38.000MB -4.4%) vs baseline: +5.0%

✅ context_with_data_no_listeners

Time: ✅ 3.341µs (SLO: <10.000µs 📉 -66.6%) vs baseline: +0.3%

Memory: ✅ 36.294MB (SLO: <38.000MB -4.5%) vs baseline: +5.0%

✅ get_item_exists

Time: ✅ 0.588µs (SLO: <10.000µs 📉 -94.1%) vs baseline: +0.9%

Memory: ✅ 36.235MB (SLO: <38.000MB -4.6%) vs baseline: +4.9%

✅ get_item_missing

Time: ✅ 0.643µs (SLO: <10.000µs 📉 -93.6%) vs baseline: +0.8%

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +4.8%

✅ set_item

Time: ✅ 24.190µs (SLO: <30.000µs 📉 -19.4%) vs baseline: +0.2%

Memory: ✅ 36.392MB (SLO: <38.000MB -4.2%) vs baseline: +5.1%

⚠️

packagesupdateimporteddependencies - 24/24 (1 unstable)

✅ import_many

Time: ✅ 155.554µs (SLO: <170.000µs -8.5%) vs baseline: -0.3%

Memory: ✅ 40.757MB (SLO: <46.000MB 📉 -11.4%) vs baseline: +4.5%

✅ import_many_cached

Time: ✅ 121.481µs (SLO: <130.000µs -6.6%) vs baseline: +0.4%

Memory: ✅ 40.931MB (SLO: <46.000MB 📉 -11.0%) vs baseline: +4.2%

✅ import_many_stdlib

Time: ✅ 0.781ms (SLO: <1.750ms 📉 -55.4%) vs baseline: +0.2%

Memory: ✅ 40.880MB (SLO: <46.000MB 📉 -11.1%) vs baseline: +5.0%

⚠️ import_many_stdlib_cached

Time: ⚠️ 0.177ms (SLO: <1.100ms 📉 -83.9%) vs baseline: +0.4%

Memory: ✅ 41.160MB (SLO: <46.000MB 📉 -10.5%) vs baseline: +5.1%

✅ import_many_unknown

Time: ✅ 840.743µs (SLO: <890.000µs -5.5%) vs baseline: +1.7%

Memory: ✅ 41.036MB (SLO: <46.000MB 📉 -10.8%) vs baseline: +4.8%

✅ import_many_unknown_cached

Time: ✅ 790.729µs (SLO: <870.000µs -9.1%) vs baseline: -0.7%

Memory: ✅ 41.363MB (SLO: <46.000MB 📉 -10.1%) vs baseline: +5.7%

✅ import_one

Time: ✅ 19.803µs (SLO: <30.000µs 📉 -34.0%) vs baseline: -0.2%

Memory: ✅ 40.868MB (SLO: <46.000MB 📉 -11.2%) vs baseline: +3.7%

✅ import_one_cache

Time: ✅ 6.259µs (SLO: <10.000µs 📉 -37.4%) vs baseline: -0.4%

Memory: ✅ 40.967MB (SLO: <46.000MB 📉 -10.9%) vs baseline: +5.0%

✅ import_one_stdlib

Time: ✅ 18.690µs (SLO: <20.000µs -6.6%) vs baseline: +0.6%

Memory: ✅ 41.008MB (SLO: <46.000MB 📉 -10.9%) vs baseline: +5.2%

✅ import_one_stdlib_cache

Time: ✅ 6.270µs (SLO: <10.000µs 📉 -37.3%) vs baseline: -1.0%

Memory: ✅ 41.070MB (SLO: <46.000MB 📉 -10.7%) vs baseline: +5.0%

✅ import_one_unknown

Time: ✅ 45.299µs (SLO: <50.000µs -9.4%) vs baseline: -0.3%

Memory: ✅ 40.811MB (SLO: <46.000MB 📉 -11.3%) vs baseline: +4.5%

✅ import_one_unknown_cache

Time: ✅ 6.316µs (SLO: <10.000µs 📉 -36.8%) vs baseline: ~same

Memory: ✅ 41.127MB (SLO: <43.000MB -4.4%) vs baseline: +5.2%

✅ All Tests Passing (21 suites)

✅ codeprovenancefork - 2/2

✅ fork-10

Time: ✅ 2.137s (SLO: <2.300s -7.1%) vs baseline: +2.6%

Memory: ✅ 17.380MB (SLO: <20.000MB 📉 -13.1%) vs baseline: +4.6%

✅ djangosimple - 30/30

✅ appsec

Time: ✅ 19.555ms (SLO: <22.300ms 📉 -12.3%) vs baseline: ~same

Memory: ✅ 68.400MB (SLO: <73.500MB -6.9%) vs baseline: +4.9%

✅ exception-replay-enabled

Time: ✅ 1.379ms (SLO: <1.450ms -4.9%) vs baseline: -0.6%

Memory: ✅ 66.562MB (SLO: <71.500MB -6.9%) vs baseline: +5.0%

✅ iast

Time: ✅ 19.623ms (SLO: <22.250ms 📉 -11.8%) vs baseline: +0.2%

Memory: ✅ 68.656MB (SLO: <75.000MB -8.5%) vs baseline: +5.3%

✅ profiler

Time: ✅ 15.240ms (SLO: <16.550ms -7.9%) vs baseline: ~same

Memory: ✅ 59.546MB (SLO: <61.000MB -2.4%) vs baseline: +4.8%

✅ resource-renaming

Time: ✅ 19.562ms (SLO: <21.750ms 📉 -10.1%) vs baseline: -0.2%

Memory: ✅ 68.557MB (SLO: <73.500MB -6.7%) vs baseline: +5.2%

✅ span-code-origin

Time: ✅ 20.249ms (SLO: <28.200ms 📉 -28.2%) vs baseline: +2.0%

Memory: ✅ 68.341MB (SLO: <75.000MB -8.9%) vs baseline: +4.8%

✅ tracer

Time: ✅ 19.630ms (SLO: <21.750ms -9.7%) vs baseline: +0.5%

Memory: ✅ 68.656MB (SLO: <75.000MB -8.5%) vs baseline: +5.3%

✅ tracer-and-profiler

Time: ✅ 21.116ms (SLO: <23.500ms 📉 -10.1%) vs baseline: +0.2%

Memory: ✅ 69.855MB (SLO: <75.000MB -6.9%) vs baseline: +4.7%

✅ tracer-dont-create-db-spans

Time: ✅ 19.728ms (SLO: <21.500ms -8.2%) vs baseline: +0.6%

Memory: ✅ 68.636MB (SLO: <75.000MB -8.5%) vs baseline: +5.3%

✅ tracer-minimal

Time: ✅ 16.810ms (SLO: <17.500ms -3.9%) vs baseline: +0.1%

Memory: ✅ 68.321MB (SLO: <75.000MB -8.9%) vs baseline: +4.8%

✅ tracer-native

Time: ✅ 19.696ms (SLO: <21.750ms -9.4%) vs baseline: +0.5%

Memory: ✅ 68.616MB (SLO: <72.500MB -5.4%) vs baseline: +5.4%

✅ tracer-no-caches

Time: ✅ 17.695ms (SLO: <19.650ms -10.0%) vs baseline: +0.3%

Memory: ✅ 68.321MB (SLO: <75.000MB -8.9%) vs baseline: +5.0%

✅ tracer-no-databases

Time: ✅ 19.287ms (SLO: <20.100ms -4.0%) vs baseline: +0.4%

Memory: ✅ 68.302MB (SLO: <75.000MB -8.9%) vs baseline: +4.6%

✅ tracer-no-middleware

Time: ✅ 19.324ms (SLO: <21.500ms 📉 -10.1%) vs baseline: +0.1%

Memory: ✅ 68.302MB (SLO: <75.000MB -8.9%) vs baseline: +4.7%

✅ tracer-no-templates

Time: ✅ 19.635ms (SLO: <22.000ms 📉 -10.7%) vs baseline: +0.8%

Memory: ✅ 68.316MB (SLO: <73.500MB -7.1%) vs baseline: +5.0%

✅ errortrackingdjangosimple - 6/6

✅ errortracking-enabled-all

Time: ✅ 16.404ms (SLO: <19.850ms 📉 -17.4%) vs baseline: -0.1%

Memory: ✅ 68.076MB (SLO: <75.000MB -9.2%) vs baseline: +4.7%

✅ errortracking-enabled-user

Time: ✅ 16.414ms (SLO: <19.400ms 📉 -15.4%) vs baseline: ~same

Memory: ✅ 68.239MB (SLO: <75.000MB -9.0%) vs baseline: +5.1%

✅ tracer-enabled

Time: ✅ 16.407ms (SLO: <19.450ms 📉 -15.6%) vs baseline: ~same

Memory: ✅ 68.158MB (SLO: <75.000MB -9.1%) vs baseline: +4.8%

✅ errortrackingflasksqli - 6/6

✅ errortracking-enabled-all

Time: ✅ 2.127ms (SLO: <2.300ms -7.5%) vs baseline: -0.1%

Memory: ✅ 55.572MB (SLO: <60.000MB -7.4%) vs baseline: +4.8%

✅ errortracking-enabled-user

Time: ✅ 2.135ms (SLO: <2.250ms -5.1%) vs baseline: ~same

Memory: ✅ 55.598MB (SLO: <60.000MB -7.3%) vs baseline: +4.9%

✅ tracer-enabled

Time: ✅ 2.133ms (SLO: <2.300ms -7.3%) vs baseline: +0.4%

Memory: ✅ 55.651MB (SLO: <60.000MB -7.2%) vs baseline: +5.0%

✅ flasksqli - 6/6

✅ appsec-enabled

Time: ✅ 2.125ms (SLO: <4.200ms 📉 -49.4%) vs baseline: +0.3%

Memory: ✅ 55.725MB (SLO: <66.000MB 📉 -15.6%) vs baseline: +4.9%

✅ iast-enabled

Time: ✅ 2.135ms (SLO: <2.800ms 📉 -23.7%) vs baseline: +0.3%

Memory: ✅ 55.676MB (SLO: <62.500MB 📉 -10.9%) vs baseline: +4.8%

✅ tracer-enabled

Time: ✅ 2.119ms (SLO: <2.250ms -5.8%) vs baseline: -0.2%

Memory: ✅ 55.679MB (SLO: <60.000MB -7.2%) vs baseline: +4.8%

✅ forktime - 4/4

✅ baseline

Time: ✅ 1.954ms (SLO: <3.000ms 📉 -34.9%) vs baseline: +3.7%

Memory: ✅ 29.295MB (SLO: <33.000MB 📉 -11.2%) vs baseline: +5.0%

✅ configured

Time: ✅ 8.712ms (SLO: <13.000ms 📉 -33.0%) vs baseline: +0.4%

Memory: ✅ 55.550MB (SLO: <60.000MB -7.4%) vs baseline: +5.0%

✅ httppropagationextract - 60/60

✅ all_styles_all_headers

Time: ✅ 80.207µs (SLO: <100.000µs 📉 -19.8%) vs baseline: +4.6%

Memory: ✅ 36.510MB (SLO: <38.000MB -3.9%) vs baseline: +5.0%

✅ b3_headers

Time: ✅ 12.805µs (SLO: <20.000µs 📉 -36.0%) vs baseline: ~same

Memory: ✅ 36.372MB (SLO: <38.000MB -4.3%) vs baseline: +4.7%

✅ b3_single_headers

Time: ✅ 11.799µs (SLO: <20.000µs 📉 -41.0%) vs baseline: ~same

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +4.5%

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

Time: ✅ 61.524µs (SLO: <80.000µs 📉 -23.1%) vs baseline: +0.1%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.7%

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

Time: ✅ 63.381µs (SLO: <80.000µs 📉 -20.8%) vs baseline: -0.1%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.9%

✅ empty_headers

Time: ✅ 1.302µs (SLO: <10.000µs 📉 -87.0%) vs baseline: ~same

Memory: ✅ 36.392MB (SLO: <38.000MB -4.2%) vs baseline: +4.9%

✅ full_t_id_datadog_headers

Time: ✅ 21.251µs (SLO: <30.000µs 📉 -29.2%) vs baseline: ~same

Memory: ✅ 36.451MB (SLO: <38.000MB -4.1%) vs baseline: +4.6%

✅ invalid_priority_header

Time: ✅ 5.915µs (SLO: <10.000µs 📉 -40.8%) vs baseline: +0.4%

Memory: ✅ 36.372MB (SLO: <38.000MB -4.3%) vs baseline: +5.0%

✅ invalid_span_id_header

Time: ✅ 5.911µs (SLO: <10.000µs 📉 -40.9%) vs baseline: +0.9%

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +4.5%

✅ invalid_tags_header

Time: ✅ 5.918µs (SLO: <10.000µs 📉 -40.8%) vs baseline: +0.5%

Memory: ✅ 36.490MB (SLO: <38.000MB -4.0%) vs baseline: +5.1%

✅ invalid_trace_id_header

Time: ✅ 5.898µs (SLO: <10.000µs 📉 -41.0%) vs baseline: -0.3%

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +4.5%

✅ large_header_no_matches

Time: ✅ 26.960µs (SLO: <30.000µs 📉 -10.1%) vs baseline: ~same

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.9%

✅ large_valid_headers_all

Time: ✅ 28.029µs (SLO: <40.000µs 📉 -29.9%) vs baseline: +0.3%

Memory: ✅ 36.353MB (SLO: <38.000MB -4.3%) vs baseline: +4.6%

✅ medium_header_no_matches

Time: ✅ 9.192µs (SLO: <20.000µs 📉 -54.0%) vs baseline: -0.5%

Memory: ✅ 36.313MB (SLO: <38.000MB -4.4%) vs baseline: +4.6%

✅ medium_valid_headers_all

Time: ✅ 10.694µs (SLO: <20.000µs 📉 -46.5%) vs baseline: +1.0%

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +4.7%

✅ none_propagation_style

Time: ✅ 1.384µs (SLO: <10.000µs 📉 -86.2%) vs baseline: -1.2%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +5.0%

✅ tracecontext_headers

Time: ✅ 32.807µs (SLO: <40.000µs 📉 -18.0%) vs baseline: ~same

Memory: ✅ 36.510MB (SLO: <38.000MB -3.9%) vs baseline: +5.0%

✅ valid_headers_all

Time: ✅ 5.924µs (SLO: <10.000µs 📉 -40.8%) vs baseline: +0.5%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.6%

✅ valid_headers_basic

Time: ✅ 5.467µs (SLO: <10.000µs 📉 -45.3%) vs baseline: -0.4%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.3%

✅ wsgi_empty_headers

Time: ✅ 1.306µs (SLO: <10.000µs 📉 -86.9%) vs baseline: +0.1%

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +4.7%

✅ wsgi_invalid_priority_header

Time: ✅ 5.940µs (SLO: <10.000µs 📉 -40.6%) vs baseline: +0.3%

Memory: ✅ 36.392MB (SLO: <38.000MB -4.2%) vs baseline: +4.6%

✅ wsgi_invalid_span_id_header

Time: ✅ 1.308µs (SLO: <10.000µs 📉 -86.9%) vs baseline: -0.4%

Memory: ✅ 36.372MB (SLO: <38.000MB -4.3%) vs baseline: +4.7%

✅ wsgi_invalid_tags_header

Time: ✅ 5.984µs (SLO: <10.000µs 📉 -40.2%) vs baseline: +0.8%

Memory: ✅ 36.313MB (SLO: <38.000MB -4.4%) vs baseline: +4.5%

✅ wsgi_invalid_trace_id_header

Time: ✅ 5.957µs (SLO: <10.000µs 📉 -40.4%) vs baseline: +0.4%

Memory: ✅ 36.471MB (SLO: <38.000MB -4.0%) vs baseline: +5.0%

✅ wsgi_large_header_no_matches

Time: ✅ 27.998µs (SLO: <40.000µs 📉 -30.0%) vs baseline: -0.2%

Memory: ✅ 36.313MB (SLO: <38.000MB -4.4%) vs baseline: +4.5%

✅ wsgi_large_valid_headers_all

Time: ✅ 29.217µs (SLO: <40.000µs 📉 -27.0%) vs baseline: ~same

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.7%

✅ wsgi_medium_header_no_matches

Time: ✅ 9.488µs (SLO: <20.000µs 📉 -52.6%) vs baseline: +0.2%

Memory: ✅ 36.372MB (SLO: <38.000MB -4.3%) vs baseline: +4.8%

✅ wsgi_medium_valid_headers_all

Time: ✅ 10.957µs (SLO: <20.000µs 📉 -45.2%) vs baseline: +0.4%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +4.7%

✅ wsgi_valid_headers_all

Time: ✅ 5.952µs (SLO: <10.000µs 📉 -40.5%) vs baseline: ~same

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +4.8%

✅ wsgi_valid_headers_basic

Time: ✅ 5.506µs (SLO: <10.000µs 📉 -44.9%) vs baseline: +0.1%

Memory: ✅ 36.569MB (SLO: <38.000MB -3.8%) vs baseline: +5.5%

✅ httppropagationinject - 16/16

✅ ids_only

Time: ✅ 20.658µs (SLO: <30.000µs 📉 -31.1%) vs baseline: +3.3%

Memory: ✅ 36.471MB (SLO: <38.000MB -4.0%) vs baseline: +4.9%

✅ with_all

Time: ✅ 26.757µs (SLO: <40.000µs 📉 -33.1%) vs baseline: +0.5%

Memory: ✅ 36.412MB (SLO: <38.000MB -4.2%) vs baseline: +5.0%

✅ with_dd_origin

Time: ✅ 23.877µs (SLO: <30.000µs 📉 -20.4%) vs baseline: +0.1%

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +5.0%

✅ with_priority_and_origin

Time: ✅ 23.321µs (SLO: <40.000µs 📉 -41.7%) vs baseline: +0.2%

Memory: ✅ 36.353MB (SLO: <38.000MB -4.3%) vs baseline: +4.2%

✅ with_sampling_priority

Time: ✅ 20.037µs (SLO: <30.000µs 📉 -33.2%) vs baseline: +0.1%

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +4.5%

✅ with_tags

Time: ✅ 24.926µs (SLO: <40.000µs 📉 -37.7%) vs baseline: +0.7%

Memory: ✅ 36.372MB (SLO: <38.000MB -4.3%) vs baseline: +4.6%

✅ with_tags_invalid

Time: ✅ 26.281µs (SLO: <40.000µs 📉 -34.3%) vs baseline: -0.2%

Memory: ✅ 36.353MB (SLO: <38.000MB -4.3%) vs baseline: +4.7%

✅ with_tags_max_size

Time: ✅ 25.311µs (SLO: <40.000µs 📉 -36.7%) vs baseline: -0.3%

Memory: ✅ 36.392MB (SLO: <38.000MB -4.2%) vs baseline: +4.7%

✅ iastaspectssplit - 12/12

✅ rsplit_aspect

Time: ✅ 154.291µs (SLO: <250.000µs 📉 -38.3%) vs baseline: +2.3%

Memory: ✅ 43.411MB (SLO: <46.000MB -5.6%) vs baseline: +5.1%

✅ rsplit_noaspect

Time: ✅ 157.034µs (SLO: <250.000µs 📉 -37.2%) vs baseline: -0.2%

Memory: ✅ 43.372MB (SLO: <46.000MB -5.7%) vs baseline: +4.7%

✅ split_aspect

Time: ✅ 148.630µs (SLO: <250.000µs 📉 -40.5%) vs baseline: +0.3%

Memory: ✅ 43.352MB (SLO: <46.000MB -5.8%) vs baseline: +4.7%

✅ split_noaspect

Time: ✅ 153.609µs (SLO: <250.000µs 📉 -38.6%) vs baseline: +0.6%

Memory: ✅ 43.273MB (SLO: <46.000MB -5.9%) vs baseline: +4.7%

✅ splitlines_aspect

Time: ✅ 147.506µs (SLO: <250.000µs 📉 -41.0%) vs baseline: +2.6%

Memory: ✅ 43.549MB (SLO: <46.000MB -5.3%) vs baseline: +5.4%

✅ splitlines_noaspect

Time: ✅ 151.025µs (SLO: <250.000µs 📉 -39.6%) vs baseline: +0.4%

Memory: ✅ 43.332MB (SLO: <46.000MB -5.8%) vs baseline: +4.6%

✅ iastpropagation - 8/8

✅ no-propagation

Time: ✅ 48.861µs (SLO: <60.000µs 📉 -18.6%) vs baseline: -0.3%

Memory: ✅ 39.734MB (SLO: <42.000MB -5.4%) vs baseline: +5.3%

✅ propagation_enabled

Time: ✅ 139.376µs (SLO: <190.000µs 📉 -26.6%) vs baseline: +1.5%

Memory: ✅ 39.675MB (SLO: <42.000MB -5.5%) vs baseline: +4.7%

✅ propagation_enabled_100

Time: ✅ 1.593ms (SLO: <2.300ms 📉 -30.7%) vs baseline: +0.8%

Memory: ✅ 39.734MB (SLO: <42.000MB -5.4%) vs baseline: +4.9%

✅ propagation_enabled_1000

Time: ✅ 29.024ms (SLO: <34.550ms 📉 -16.0%) vs baseline: -0.3%

Memory: ✅ 39.656MB (SLO: <42.000MB -5.6%) vs baseline: +4.8%

✅ otelsdkspan - 24/24

✅ add-event

Time: ✅ 40.792ms (SLO: <42.000ms -2.9%) vs baseline: +0.3%

Memory: ✅ 38.791MB (SLO: <40.750MB -4.8%) vs baseline: +4.5%

✅ add-link

Time: ✅ 36.616ms (SLO: <38.550ms -5.0%) vs baseline: +0.3%

Memory: ✅ 38.928MB (SLO: <40.750MB -4.5%) vs baseline: +5.3%

✅ add-metrics

Time: ✅ 222.740ms (SLO: <232.000ms -4.0%) vs baseline: +1.6%

Memory: ✅ 38.751MB (SLO: <40.750MB -4.9%) vs baseline: +4.4%

✅ add-tags

Time: ✅ 212.701ms (SLO: <221.600ms -4.0%) vs baseline: +1.2%

Memory: ✅ 38.810MB (SLO: <40.750MB -4.8%) vs baseline: +5.0%

✅ get-context

Time: ✅ 29.248ms (SLO: <31.300ms -6.6%) vs baseline: +0.4%

Memory: ✅ 38.732MB (SLO: <40.750MB -5.0%) vs baseline: +4.3%

✅ is-recording

Time: ✅ 29.280ms (SLO: <31.000ms -5.5%) vs baseline: +0.5%

Memory: ✅ 38.948MB (SLO: <40.750MB -4.4%) vs baseline: +5.3%

✅ record-exception

Time: ✅ 63.247ms (SLO: <65.850ms -4.0%) vs baseline: +0.4%

Memory: ✅ 38.987MB (SLO: <40.750MB -4.3%) vs baseline: +5.1%

✅ set-status

Time: ✅ 32.015ms (SLO: <34.150ms -6.3%) vs baseline: +0.2%

Memory: ✅ 38.869MB (SLO: <40.750MB -4.6%) vs baseline: +5.4%

✅ start

Time: ✅ 29.479ms (SLO: <30.150ms -2.2%) vs baseline: +2.4%

Memory: ✅ 38.869MB (SLO: <40.750MB -4.6%) vs baseline: +5.6%

✅ start-finish

Time: ✅ 34.076ms (SLO: <35.350ms -3.6%) vs baseline: +0.7%

Memory: ✅ 38.810MB (SLO: <40.750MB -4.8%) vs baseline: +5.0%

✅ start-finish-telemetry

Time: ✅ 34.131ms (SLO: <35.450ms -3.7%) vs baseline: -0.1%

Memory: ✅ 38.771MB (SLO: <40.750MB -4.9%) vs baseline: +4.6%

✅ update-name

Time: ✅ 31.194ms (SLO: <33.400ms -6.6%) vs baseline: +0.8%

Memory: ✅ 38.987MB (SLO: <40.750MB -4.3%) vs baseline: +5.3%

✅ otelspan - 22/22

✅ add-event

Time: ✅ 40.492ms (SLO: <47.150ms 📉 -14.1%) vs baseline: +0.1%

Memory: ✅ 41.249MB (SLO: <47.000MB 📉 -12.2%) vs baseline: +5.0%

✅ add-metrics

Time: ✅ 251.633ms (SLO: <344.800ms 📉 -27.0%) vs baseline: +0.2%

Memory: ✅ 45.736MB (SLO: <47.500MB -3.7%) vs baseline: +5.2%

✅ add-tags

Time: ✅ 307.880ms (SLO: <330.000ms -6.7%) vs baseline: +0.4%

Memory: ✅ 45.644MB (SLO: <47.500MB -3.9%) vs baseline: +4.8%

✅ get-context

Time: ✅ 81.006ms (SLO: <92.350ms 📉 -12.3%) vs baseline: +0.3%

Memory: ✅ 41.209MB (SLO: <46.500MB 📉 -11.4%) vs baseline: +4.9%

✅ is-recording

Time: ✅ 36.850ms (SLO: <44.500ms 📉 -17.2%) vs baseline: ~same

Memory: ✅ 41.163MB (SLO: <47.500MB 📉 -13.3%) vs baseline: +5.1%

✅ record-exception

Time: ✅ 59.143ms (SLO: <67.650ms 📉 -12.6%) vs baseline: -0.4%

Memory: ✅ 41.610MB (SLO: <47.000MB 📉 -11.5%) vs baseline: +4.9%

✅ set-status

Time: ✅ 43.225ms (SLO: <50.400ms 📉 -14.2%) vs baseline: +0.2%

Memory: ✅ 41.083MB (SLO: <47.000MB 📉 -12.6%) vs baseline: +5.1%

✅ start

Time: ✅ 37.672ms (SLO: <43.450ms 📉 -13.3%) vs baseline: +4.0%

Memory: ✅ 41.172MB (SLO: <47.000MB 📉 -12.4%) vs baseline: +5.3%

✅ start-finish

Time: ✅ 85.236ms (SLO: <90.000ms -5.3%) vs baseline: +0.4%

Memory: ✅ 38.850MB (SLO: <46.500MB 📉 -16.5%) vs baseline: +4.9%

✅ start-finish-telemetry

Time: ✅ 86.738ms (SLO: <91.000ms -4.7%) vs baseline: -0.1%

Memory: ✅ 38.869MB (SLO: <46.500MB 📉 -16.4%) vs baseline: +4.8%

✅ update-name

Time: ✅ 37.928ms (SLO: <45.150ms 📉 -16.0%) vs baseline: +0.6%

Memory: ✅ 41.140MB (SLO: <47.000MB 📉 -12.5%) vs baseline: +4.8%

✅ packagespackageforrootmodulemapping - 4/4

✅ cache_off

Time: ✅ 345.688ms (SLO: <354.300ms -2.4%) vs baseline: -0.5%

Memory: ✅ 41.855MB (SLO: <46.000MB -9.0%) vs baseline: +3.3%

✅ cache_on

Time: ✅ 0.391µs (SLO: <10.000µs 📉 -96.1%) vs baseline: +0.4%

Memory: ✅ 40.994MB (SLO: <46.000MB 📉 -10.9%) vs baseline: +4.6%

✅ rand - 2/2

✅ rand128bits

Time: ✅ 0.182µs (SLO: <21.000µs 📉 -99.1%) vs baseline: ~same

✅ rand64bits

Time: ✅ 0.123µs (SLO: <15.000µs 📉 -99.2%) vs baseline: -0.7%

✅ ratelimiter - 12/12

✅ defaults

Time: ✅ 2.343µs (SLO: <10.000µs 📉 -76.6%) vs baseline: -0.4%

Memory: ✅ 36.313MB (SLO: <38.000MB -4.4%) vs baseline: +5.1%

✅ high_rate_limit

Time: ✅ 2.397µs (SLO: <10.000µs 📉 -76.0%) vs baseline: -0.7%

Memory: ✅ 36.274MB (SLO: <38.000MB -4.5%) vs baseline: +4.8%

✅ long_window

Time: ✅ 2.354µs (SLO: <10.000µs 📉 -76.5%) vs baseline: +0.3%

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +5.0%

✅ low_rate_limit

Time: ✅ 2.355µs (SLO: <10.000µs 📉 -76.4%) vs baseline: +0.1%

Memory: ✅ 36.372MB (SLO: <38.000MB -4.3%) vs baseline: +5.1%

✅ no_rate_limit

Time: ✅ 0.833µs (SLO: <10.000µs 📉 -91.7%) vs baseline: +0.6%

Memory: ✅ 36.313MB (SLO: <38.000MB -4.4%) vs baseline: +4.8%

✅ short_window

Time: ✅ 2.492µs (SLO: <10.000µs 📉 -75.1%) vs baseline: +0.9%

Memory: ✅ 36.274MB (SLO: <38.000MB -4.5%) vs baseline: +4.8%

✅ recursivecomputation - 8/8

✅ deep

Time: ✅ 310.495ms (SLO: <320.950ms -3.3%) vs baseline: ~same

Memory: ✅ 37.257MB (SLO: <38.750MB -3.9%) vs baseline: +5.0%

✅ deep-profiled

Time: ✅ 327.389ms (SLO: <359.150ms -8.8%) vs baseline: -0.2%

Memory: ✅ 43.077MB (SLO: <46.000MB -6.4%) vs baseline: +4.8%

✅ medium

Time: ✅ 7.170ms (SLO: <7.400ms -3.1%) vs baseline: +0.3%

Memory: ✅ 36.490MB (SLO: <38.000MB -4.0%) vs baseline: +5.1%

✅ shallow

Time: ✅ 0.985ms (SLO: <1.050ms -6.2%) vs baseline: +1.6%

Memory: ✅ 36.353MB (SLO: <38.000MB -4.3%) vs baseline: +5.0%

✅ samplingrules - 8/8

✅ average_match

Time: ✅ 149.661µs (SLO: <290.000µs 📉 -48.4%) vs baseline: -0.7%

Memory: ✅ 36.235MB (SLO: <38.000MB -4.6%) vs baseline: +4.5%

✅ high_match

Time: ✅ 201.335µs (SLO: <480.000µs 📉 -58.1%) vs baseline: +1.3%

Memory: ✅ 36.353MB (SLO: <38.000MB -4.3%) vs baseline: +4.9%

✅ low_match

Time: ✅ 101.067µs (SLO: <120.000µs 📉 -15.8%) vs baseline: +0.7%

Memory: ✅ 701.612MB (SLO: <780.000MB 📉 -10.0%) vs baseline: +4.9%

✅ very_low_match

Time: ✅ 2.955ms (SLO: <8.500ms 📉 -65.2%) vs baseline: -0.3%

Memory: ✅ 78.835MB (SLO: <85.000MB -7.3%) vs baseline: +4.9%

✅ sethttpmeta - 32/32

✅ all-disabled

Time: ✅ 10.472µs (SLO: <20.000µs 📉 -47.6%) vs baseline: -0.5%

Memory: ✅ 37.080MB (SLO: <38.750MB -4.3%) vs baseline: +5.1%

✅ all-enabled

Time: ✅ 40.943µs (SLO: <50.000µs 📉 -18.1%) vs baseline: +2.0%

Memory: ✅ 36.844MB (SLO: <38.750MB -4.9%) vs baseline: +4.8%

✅ collectipvariant_exists

Time: ✅ 40.852µs (SLO: <50.000µs 📉 -18.3%) vs baseline: +0.2%

Memory: ✅ 36.785MB (SLO: <38.750MB -5.1%) vs baseline: +4.5%

✅ no-collectipvariant

Time: ✅ 40.261µs (SLO: <50.000µs 📉 -19.5%) vs baseline: +0.3%

Memory: ✅ 36.884MB (SLO: <38.750MB -4.8%) vs baseline: +5.0%

✅ no-useragentvariant

Time: ✅ 38.777µs (SLO: <50.000µs 📉 -22.4%) vs baseline: -0.4%

Memory: ✅ 37.041MB (SLO: <38.750MB -4.4%) vs baseline: +5.4%

✅ obfuscation-no-query

Time: ✅ 40.587µs (SLO: <50.000µs 📉 -18.8%) vs baseline: -0.1%

Memory: ✅ 36.707MB (SLO: <38.750MB -5.3%) vs baseline: +4.6%

✅ obfuscation-regular-case-explicit-query

Time: ✅ 76.203µs (SLO: <90.000µs 📉 -15.3%) vs baseline: -0.1%

Memory: ✅ 37.218MB (SLO: <38.750MB -4.0%) vs baseline: +4.9%

✅ obfuscation-regular-case-implicit-query

Time: ✅ 76.882µs (SLO: <90.000µs 📉 -14.6%) vs baseline: ~same

Memory: ✅ 37.120MB (SLO: <38.750MB -4.2%) vs baseline: +4.5%

✅ obfuscation-send-querystring-disabled

Time: ✅ 155.428µs (SLO: <170.000µs -8.6%) vs baseline: ~same

Memory: ✅ 37.198MB (SLO: <38.750MB -4.0%) vs baseline: +4.9%

✅ obfuscation-worst-case-explicit-query

Time: ✅ 150.162µs (SLO: <160.000µs -6.1%) vs baseline: ~same

Memory: ✅ 37.139MB (SLO: <38.750MB -4.2%) vs baseline: +4.7%

✅ obfuscation-worst-case-implicit-query

Time: ✅ 156.224µs (SLO: <170.000µs -8.1%) vs baseline: ~same

Memory: ✅ 37.139MB (SLO: <38.750MB -4.2%) vs baseline: +4.9%

✅ useragentvariant_exists_1

Time: ✅ 39.588µs (SLO: <50.000µs 📉 -20.8%) vs baseline: +0.2%

Memory: ✅ 36.844MB (SLO: <38.750MB -4.9%) vs baseline: +4.8%

✅ useragentvariant_exists_2

Time: ✅ 40.771µs (SLO: <50.000µs 📉 -18.5%) vs baseline: -0.3%

Memory: ✅ 36.844MB (SLO: <38.750MB -4.9%) vs baseline: +4.7%

✅ useragentvariant_exists_3

Time: ✅ 40.163µs (SLO: <50.000µs 📉 -19.7%) vs baseline: ~same

Memory: ✅ 36.923MB (SLO: <38.750MB -4.7%) vs baseline: +5.1%

✅ useragentvariant_not_exists_1

Time: ✅ 39.453µs (SLO: <50.000µs 📉 -21.1%) vs baseline: -0.1%

Memory: ✅ 36.903MB (SLO: <38.750MB -4.8%) vs baseline: +4.5%

✅ useragentvariant_not_exists_2

Time: ✅ 39.552µs (SLO: <50.000µs 📉 -20.9%) vs baseline: +0.4%

Memory: ✅ 36.864MB (SLO: <38.750MB -4.9%) vs baseline: +5.0%

✅ span - 26/26

✅ add-event

Time: ✅ 18.467ms (SLO: <22.500ms 📉 -17.9%) vs baseline: ~same

Memory: ✅ 38.475MB (SLO: <53.000MB 📉 -27.4%) vs baseline: +4.8%

✅ add-metrics

Time: ✅ 88.352ms (SLO: <93.500ms -5.5%) vs baseline: ~same

Memory: ✅ 43.057MB (SLO: <53.000MB 📉 -18.8%) vs baseline: +4.8%

✅ add-tags

Time: ✅ 145.012ms (SLO: <155.000ms -6.4%) vs baseline: +0.5%

Memory: ✅ 42.934MB (SLO: <53.000MB 📉 -19.0%) vs baseline: +4.8%

✅ get-context

Time: ✅ 16.829ms (SLO: <20.500ms 📉 -17.9%) vs baseline: +0.2%

Memory: ✅ 38.476MB (SLO: <53.000MB 📉 -27.4%) vs baseline: +5.0%

✅ is-recording

Time: ✅ 16.907ms (SLO: <20.500ms 📉 -17.5%) vs baseline: -0.2%

Memory: ✅ 38.280MB (SLO: <53.000MB 📉 -27.8%) vs baseline: +4.7%

✅ record-exception

Time: ✅ 37.694ms (SLO: <41.000ms -8.1%) vs baseline: +0.3%

Memory: ✅ 39.159MB (SLO: <53.000MB 📉 -26.1%) vs baseline: +5.2%

✅ set-status

Time: ✅ 18.627ms (SLO: <22.000ms 📉 -15.3%) vs baseline: +0.3%

Memory: ✅ 38.516MB (SLO: <53.000MB 📉 -27.3%) vs baseline: +4.9%

✅ start

Time: ✅ 17.584ms (SLO: <20.500ms 📉 -14.2%) vs baseline: +4.9%

Memory: ✅ 38.437MB (SLO: <53.000MB 📉 -27.5%) vs baseline: +5.0%

✅ start-finish

Time: ✅ 53.730ms (SLO: <56.000ms -4.1%) vs baseline: +0.3%

Memory: ✅ 36.392MB (SLO: <38.000MB -4.2%) vs baseline: +5.0%

✅ start-finish-telemetry

Time: ✅ 54.897ms (SLO: <58.000ms -5.4%) vs baseline: ~same

Memory: ✅ 36.451MB (SLO: <38.000MB -4.1%) vs baseline: +5.1%

✅ start-finish-traceid128

Time: ✅ 56.310ms (SLO: <60.000ms -6.1%) vs baseline: ~same

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +5.3%

✅ start-traceid128

Time: ✅ 16.720ms (SLO: <22.500ms 📉 -25.7%) vs baseline: -1.0%

Memory: ✅ 38.339MB (SLO: <53.000MB 📉 -27.7%) vs baseline: +4.7%

✅ update-name

Time: ✅ 17.331ms (SLO: <22.000ms 📉 -21.2%) vs baseline: -0.3%

Memory: ✅ 38.496MB (SLO: <53.000MB 📉 -27.4%) vs baseline: +5.1%

✅ telemetryaddmetric - 30/30

✅ 1-count-metric-1-times

Time: ✅ 2.197µs (SLO: <20.000µs 📉 -89.0%) vs baseline: +6.5%

Memory: ✅ 36.255MB (SLO: <38.000MB -4.6%) vs baseline: +4.7%

✅ 1-count-metrics-100-times

Time: ✅ 150.579µs (SLO: <220.000µs 📉 -31.6%) vs baseline: ~same

Memory: ✅ 36.392MB (SLO: <38.000MB -4.2%) vs baseline: +5.0%

✅ 1-distribution-metric-1-times

Time: ✅ 2.423µs (SLO: <20.000µs 📉 -87.9%) vs baseline: -0.5%

Memory: ✅ 36.333MB (SLO: <38.000MB -4.4%) vs baseline: +5.4%

✅ 1-distribution-metrics-100-times

Time: ✅ 161.935µs (SLO: <230.000µs 📉 -29.6%) vs baseline: -0.9%

Memory: ✅ 36.196MB (SLO: <38.000MB -4.7%) vs baseline: +4.8%

✅ 1-gauge-metric-1-times

Time: ✅ 1.944µs (SLO: <20.000µs 📉 -90.3%) vs baseline: -0.4%

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +5.4%

✅ 1-gauge-metrics-100-times

Time: ✅ 137.040µs (SLO: <150.000µs -8.6%) vs baseline: -0.6%

Memory: ✅ 36.235MB (SLO: <38.000MB -4.6%) vs baseline: +4.7%

✅ 1-rate-metric-1-times

Time: ✅ 2.196µs (SLO: <20.000µs 📉 -89.0%) vs baseline: -0.2%

Memory: ✅ 36.235MB (SLO: <38.000MB -4.6%) vs baseline: +4.9%

✅ 1-rate-metrics-100-times

Time: ✅ 163.738µs (SLO: <250.000µs 📉 -34.5%) vs baseline: ~same

Memory: ✅ 36.235MB (SLO: <38.000MB -4.6%) vs baseline: +4.6%

✅ 100-count-metrics-100-times

Time: ✅ 15.014ms (SLO: <22.000ms 📉 -31.8%) vs baseline: -0.7%

Memory: ✅ 36.255MB (SLO: <38.000MB -4.6%) vs baseline: +5.0%

✅ 100-distribution-metrics-100-times

Time: ✅ 1.711ms (SLO: <2.550ms 📉 -32.9%) vs baseline: -0.4%

Memory: ✅ 36.431MB (SLO: <38.000MB -4.1%) vs baseline: +5.1%

✅ 100-gauge-metrics-100-times

Time: ✅ 1.406ms (SLO: <1.550ms -9.3%) vs baseline: -0.4%

Memory: ✅ 36.235MB (SLO: <38.000MB -4.6%) vs baseline: +4.6%

✅ 100-rate-metrics-100-times

Time: ✅ 1.682ms (SLO: <2.550ms 📉 -34.1%) vs baseline: +0.6%

Memory: ✅ 36.215MB (SLO: <38.000MB -4.7%) vs baseline: +4.6%

✅ flush-1-metric

Time: ✅ 3.552µs (SLO: <20.000µs 📉 -82.2%) vs baseline: +0.4%

Memory: ✅ 36.215MB (SLO: <38.000MB -4.7%) vs baseline: +4.3%

✅ flush-100-metrics

Time: ✅ 175.109µs (SLO: <250.000µs 📉 -30.0%) vs baseline: -0.4%

Memory: ✅ 36.274MB (SLO: <38.000MB -4.5%) vs baseline: +4.7%

✅ flush-1000-metrics

Time: ✅ 2.188ms (SLO: <2.500ms 📉 -12.5%) vs baseline: -1.3%

Memory: ✅ 37.120MB (SLO: <38.750MB -4.2%) vs baseline: +5.0%

✅ tracer - 6/6

✅ large

Time: ✅ 31.315ms (SLO: <32.950ms -5.0%) vs baseline: +0.2%

Memory: ✅ 37.591MB (SLO: <39.250MB -4.2%) vs baseline: +5.0%

✅ medium

Time: ✅ 3.106ms (SLO: <3.200ms -2.9%) vs baseline: ~same

Memory: ✅ 36.451MB (SLO: <38.750MB -5.9%) vs baseline: +5.1%

✅ small

Time: ✅ 360.972µs (SLO: <370.000µs -2.4%) vs baseline: +3.4%

Memory: ✅ 36.392MB (SLO: <38.750MB -6.1%) vs baseline: +4.7%

ℹ️ Scenarios Missing SLO Configuration (46 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
iast_aspects-re_expand_aspect
iast_aspects-re_expand_noaspect
iast_aspects-re_findall_aspect
iast_aspects-re_findall_noaspect
iast_aspects-re_finditer_aspect
iast_aspects-re_finditer_noaspect
iast_aspects-re_fullmatch_aspect
iast_aspects-re_fullmatch_noaspect
iast_aspects-re_group_aspect
iast_aspects-re_group_noaspect
iast_aspects-re_groups_aspect
iast_aspects-re_groups_noaspect
iast_aspects-re_match_aspect
iast_aspects-re_match_noaspect
iast_aspects-re_search_aspect
iast_aspects-re_search_noaspect
iast_aspects-re_sub_aspect
iast_aspects-re_sub_noaspect
iast_aspects-re_subn_aspect
iast_aspects-re_subn_noaspect
sethttpmeta-obfuscation-disabled
startup-baseline
startup-baseline_django
startup-baseline_flask
startup-ddtrace_run
startup-ddtrace_run_appsec
startup-ddtrace_run_profiling
startup-ddtrace_run_runtime_metrics
startup-ddtrace_run_send_span
startup-ddtrace_run_telemetry_disabled
startup-ddtrace_run_telemetry_enabled
startup-import_ddtrace
startup-import_ddtrace_auto
startup-import_ddtrace_auto_django
startup-import_ddtrace_auto_flask
startup-import_ddtrace_django
startup-import_ddtrace_flask

brettlangdon and others added 3 commits April 6, 2026 11:31

Merge branch '4.6' of https://github.com/DataDog/dd-trace-py into 4.6

86d222b

juanjux requested review from a team as code owners April 6, 2026 14:22

juanjux requested review from ZStriker19, christophe-papazian and emmettbutler April 6, 2026 14:22

taegyunkim approved these changes Apr 6, 2026

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brettlangdon approved these changes Apr 6, 2026

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juanjux merged commit eb3fc51 into 4.6 Apr 6, 2026
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juanjux deleted the juanjux/kowalski/fix-internal-detach-threads-if-joinable-before-destroying-backport-4.6 branch April 6, 2026 15:54

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juanjux commented Apr 6, 2026

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cit-pr-commenter-54b7da Bot commented Apr 6, 2026

Codeowners resolved as

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⚠️ Warnings

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pr-commenter Bot commented Apr 6, 2026

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

✅ title_aspect

✅ title_noaspect

✅ translate_aspect

✅ translate_noaspect

✅ upper_aspect

✅ upper_noaspect

✅ ospathbasename_aspect

✅ ospathbasename_noaspect

✅ ospathjoin_aspect

✅ ospathjoin_noaspect

✅ ospathnormcase_aspect

✅ ospathnormcase_noaspect

✅ ospathsplit_aspect

✅ ospathsplit_noaspect

datadog-datadog-prod-us1-2 Bot commented Apr 6, 2026 •

edited by datadog-prod-us1-4 Bot

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