fix(internal): detach threads if joinable before destroying [backport 4.5] by juanjux · Pull Request #17336 · DataDog/dd-trace-py

juanjux · 2026-04-06T14:26:46Z

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 · 2026-04-06T14:27:11Z

Codeowners resolved as

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

pr-commenter · 2026-04-06T15:06:14Z

Performance SLOs

Comparing candidate juanjux/kowalski/fix-internal-detach-threads-if-joinable-before-destroying-backport-4.5 (96394dd) with baseline 4.5 (8ecee12)

📈 Performance Regressions (2 suites)

📈 iastaspects - 118/118

✅ add_aspect

Time: ✅ 103.664µs (SLO: <130.000µs 📉 -20.3%) vs baseline: +2.9%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +4.9%

✅ add_inplace_aspect

Time: ✅ 102.078µs (SLO: <130.000µs 📉 -21.5%) vs baseline: +1.0%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +6.6%

✅ add_inplace_noaspect

Time: ✅ 28.325µs (SLO: <40.000µs 📉 -29.2%) vs baseline: ~same

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

✅ add_noaspect

Time: ✅ 48.980µs (SLO: <70.000µs 📉 -30.0%) vs baseline: +0.5%

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

✅ bytearray_aspect

Time: ✅ 250.106µs (SLO: <400.000µs 📉 -37.5%) vs baseline: -0.8%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.1%

✅ bytearray_extend_aspect

Time: ✅ 642.787µs (SLO: <800.000µs 📉 -19.7%) vs baseline: -1.4%

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

✅ bytearray_extend_noaspect

Time: ✅ 263.198µs (SLO: <400.000µs 📉 -34.2%) vs baseline: -0.4%

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

✅ bytearray_noaspect

Time: ✅ 139.613µs (SLO: <300.000µs 📉 -53.5%) vs baseline: +0.9%

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

✅ bytes_aspect

Time: ✅ 217.839µs (SLO: <300.000µs 📉 -27.4%) vs baseline: ~same

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +5.1%

✅ bytes_noaspect

Time: ✅ 133.537µs (SLO: <200.000µs 📉 -33.2%) vs baseline: +0.1%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +5.7%

✅ bytesio_aspect

Time: ✅ 3.766ms (SLO: <5.000ms 📉 -24.7%) vs baseline: -0.2%

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

✅ bytesio_noaspect

Time: ✅ 315.874µs (SLO: <420.000µs 📉 -24.8%) vs baseline: +0.6%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.4%

✅ capitalize_aspect

Time: ✅ 88.200µs (SLO: <300.000µs 📉 -70.6%) vs baseline: +0.1%

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

✅ capitalize_noaspect

Time: ✅ 249.892µs (SLO: <300.000µs 📉 -16.7%) vs baseline: +1.7%

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

✅ casefold_aspect

Time: ✅ 88.600µs (SLO: <500.000µs 📉 -82.3%) vs baseline: +0.2%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.5%

✅ casefold_noaspect

Time: ✅ 302.724µs (SLO: <500.000µs 📉 -39.5%) vs baseline: -1.2%

Memory: ✅ 42.880MB (SLO: <46.000MB -6.8%) vs baseline: +5.1%

✅ decode_aspect

Time: ✅ 86.975µs (SLO: <100.000µs 📉 -13.0%) vs baseline: +0.1%

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

✅ decode_noaspect

Time: ✅ 152.649µs (SLO: <210.000µs 📉 -27.3%) vs baseline: ~same

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +5.5%

✅ encode_aspect

Time: ✅ 84.218µs (SLO: <200.000µs 📉 -57.9%) vs baseline: +0.2%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.2%

✅ encode_noaspect

Time: ✅ 142.173µs (SLO: <200.000µs 📉 -28.9%) vs baseline: +0.9%

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

✅ format_aspect

Time: ✅ 14.607ms (SLO: <19.200ms 📉 -23.9%) vs baseline: ~same

Memory: ✅ 43.045MB (SLO: <46.000MB -6.4%) vs baseline: +4.9%

✅ format_map_aspect

Time: ✅ 16.438ms (SLO: <21.500ms 📉 -23.5%) vs baseline: +0.7%

Memory: ✅ 43.058MB (SLO: <46.000MB -6.4%) vs baseline: +5.8%

✅ format_map_noaspect

Time: ✅ 369.941µs (SLO: <500.000µs 📉 -26.0%) vs baseline: -0.4%

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

✅ format_noaspect

Time: ✅ 298.571µs (SLO: <500.000µs 📉 -40.3%) vs baseline: -1.6%

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

✅ index_aspect

Time: ✅ 126.077µs (SLO: <300.000µs 📉 -58.0%) vs baseline: +2.9%

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.1%

✅ index_noaspect

Time: ✅ 40.353µs (SLO: <300.000µs 📉 -86.5%) vs baseline: ~same

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.5%

✅ join_aspect

Time: ✅ 206.700µs (SLO: <300.000µs 📉 -31.1%) vs baseline: -2.2%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +4.9%

✅ join_noaspect

Time: ✅ 144.804µs (SLO: <300.000µs 📉 -51.7%) vs baseline: +1.6%

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

✅ ljust_aspect

Time: ✅ 568.842µs (SLO: <700.000µs 📉 -18.7%) vs baseline: 📈 +14.5%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +4.7%

✅ ljust_noaspect

Time: ✅ 254.566µs (SLO: <300.000µs 📉 -15.1%) vs baseline: -0.4%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +5.4%

✅ lower_aspect

Time: ✅ 289.725µs (SLO: <500.000µs 📉 -42.1%) vs baseline: -2.0%

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

✅ lower_noaspect

Time: ✅ 228.717µs (SLO: <300.000µs 📉 -23.8%) vs baseline: -1.7%

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

✅ lstrip_aspect

Time: ✅ 0.268ms (SLO: <3.000ms 📉 -91.1%) vs baseline: -2.1%

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

✅ lstrip_noaspect

Time: ✅ 0.172ms (SLO: <3.000ms 📉 -94.3%) vs baseline: -3.2%

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

✅ modulo_aspect

Time: ✅ 14.264ms (SLO: <18.750ms 📉 -23.9%) vs baseline: +0.2%

Memory: ✅ 43.070MB (SLO: <46.000MB -6.4%) vs baseline: +4.9%

✅ modulo_aspect_for_bytearray_bytearray

Time: ✅ 14.809ms (SLO: <19.350ms 📉 -23.5%) vs baseline: ~same

Memory: ✅ 43.110MB (SLO: <46.000MB -6.3%) vs baseline: +5.2%

✅ modulo_aspect_for_bytes

Time: ✅ 14.478ms (SLO: <18.900ms 📉 -23.4%) vs baseline: +0.8%

Memory: ✅ 42.995MB (SLO: <46.000MB -6.5%) vs baseline: +4.8%

✅ modulo_aspect_for_bytes_bytearray

Time: ✅ 14.587ms (SLO: <19.150ms 📉 -23.8%) vs baseline: -0.4%

Memory: ✅ 43.100MB (SLO: <46.000MB -6.3%) vs baseline: +5.1%

✅ modulo_noaspect

Time: ✅ 0.356ms (SLO: <3.000ms 📉 -88.1%) vs baseline: -0.4%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.2%

✅ replace_aspect

Time: ✅ 18.411ms (SLO: <24.000ms 📉 -23.3%) vs baseline: +0.1%

Memory: ✅ 43.059MB (SLO: <46.000MB -6.4%) vs baseline: +4.9%

✅ replace_noaspect

Time: ✅ 275.749µs (SLO: <300.000µs -8.1%) vs baseline: -1.8%

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

✅ repr_aspect

Time: ✅ 313.938µs (SLO: <420.000µs 📉 -25.3%) vs baseline: -1.7%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +5.2%

✅ repr_noaspect

Time: ✅ 46.587µs (SLO: <90.000µs 📉 -48.2%) vs baseline: -0.5%

Memory: ✅ 43.037MB (SLO: <46.000MB -6.4%) vs baseline: +5.1%

✅ rstrip_aspect

Time: ✅ 380.984µs (SLO: <500.000µs 📉 -23.8%) vs baseline: ~same

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

✅ rstrip_noaspect

Time: ✅ 179.717µs (SLO: <300.000µs 📉 -40.1%) vs baseline: +0.6%

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

✅ slice_aspect

Time: ✅ 179.975µs (SLO: <300.000µs 📉 -40.0%) vs baseline: -2.3%

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

✅ slice_noaspect

Time: ✅ 54.030µs (SLO: <90.000µs 📉 -40.0%) vs baseline: -0.2%

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

✅ stringio_aspect

Time: ✅ 4.388ms (SLO: <5.000ms 📉 -12.2%) vs baseline: 📈 +16.0%

Memory: ✅ 43.018MB (SLO: <46.000MB -6.5%) vs baseline: +5.1%

✅ stringio_noaspect

Time: ✅ 345.162µs (SLO: <500.000µs 📉 -31.0%) vs baseline: ~same

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

✅ strip_aspect

Time: ✅ 265.926µs (SLO: <350.000µs 📉 -24.0%) vs baseline: -2.4%

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

✅ strip_noaspect

Time: ✅ 172.805µs (SLO: <240.000µs 📉 -28.0%) vs baseline: -3.4%

Memory: ✅ 42.959MB (SLO: <46.000MB -6.6%) vs baseline: +5.2%

✅ swapcase_aspect

Time: ✅ 328.365µs (SLO: <500.000µs 📉 -34.3%) vs baseline: -1.8%

Memory: ✅ 42.998MB (SLO: <46.000MB -6.5%) vs baseline: +5.2%

✅ swapcase_noaspect

Time: ✅ 268.112µs (SLO: <400.000µs 📉 -33.0%) vs baseline: ~same

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

✅ title_aspect

Time: ✅ 313.311µs (SLO: <500.000µs 📉 -37.3%) vs baseline: -1.5%

Memory: ✅ 42.920MB (SLO: <46.000MB -6.7%) vs baseline: +5.2%

✅ title_noaspect

Time: ✅ 252.529µs (SLO: <400.000µs 📉 -36.9%) vs baseline: -0.3%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.1%

✅ translate_aspect

Time: ✅ 490.820µs (SLO: <700.000µs 📉 -29.9%) vs baseline: ~same

Memory: ✅ 42.979MB (SLO: <46.000MB -6.6%) vs baseline: +5.2%

✅ translate_noaspect

Time: ✅ 422.669µs (SLO: <500.000µs 📉 -15.5%) vs baseline: -0.5%

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

✅ upper_aspect

Time: ✅ 294.084µs (SLO: <500.000µs 📉 -41.2%) vs baseline: -0.3%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.2%

✅ upper_noaspect

Time: ✅ 230.561µs (SLO: <400.000µs 📉 -42.4%) vs baseline: -0.3%

Memory: ✅ 42.939MB (SLO: <46.000MB -6.7%) vs baseline: +5.1%

📈 iastaspectsospath - 24/24

✅ ospathbasename_aspect

Time: ✅ 510.173µs (SLO: <700.000µs 📉 -27.1%) vs baseline: 📈 +19.8%

Memory: ✅ 42.546MB (SLO: <46.000MB -7.5%) vs baseline: +4.9%

✅ ospathbasename_noaspect

Time: ✅ 424.486µs (SLO: <700.000µs 📉 -39.4%) vs baseline: -1.6%

Memory: ✅ 42.566MB (SLO: <46.000MB -7.5%) vs baseline: +5.0%

✅ ospathjoin_aspect

Time: ✅ 616.158µs (SLO: <700.000µs 📉 -12.0%) vs baseline: -0.8%

Memory: ✅ 42.566MB (SLO: <46.000MB -7.5%) vs baseline: +5.1%

✅ ospathjoin_noaspect

Time: ✅ 627.134µs (SLO: <700.000µs 📉 -10.4%) vs baseline: -0.4%

Memory: ✅ 42.625MB (SLO: <46.000MB -7.3%) vs baseline: +5.1%

✅ ospathnormcase_aspect

Time: ✅ 348.622µs (SLO: <700.000µs 📉 -50.2%) vs baseline: -0.8%

Memory: ✅ 42.585MB (SLO: <46.000MB -7.4%) vs baseline: +5.1%

✅ ospathnormcase_noaspect

Time: ✅ 355.667µs (SLO: <700.000µs 📉 -49.2%) vs baseline: +0.1%

Memory: ✅ 42.644MB (SLO: <46.000MB -7.3%) vs baseline: +5.3%

✅ ospathsplit_aspect

Time: ✅ 483.643µs (SLO: <700.000µs 📉 -30.9%) vs baseline: -0.5%

Memory: ✅ 42.546MB (SLO: <46.000MB -7.5%) vs baseline: +5.1%

✅ ospathsplit_noaspect

Time: ✅ 494.293µs (SLO: <700.000µs 📉 -29.4%) vs baseline: ~same

Memory: ✅ 42.585MB (SLO: <46.000MB -7.4%) vs baseline: +5.1%

✅ ospathsplitdrive_aspect

Time: ✅ 373.789µs (SLO: <700.000µs 📉 -46.6%) vs baseline: -0.8%

Memory: ✅ 42.566MB (SLO: <46.000MB -7.5%) vs baseline: +5.0%

✅ ospathsplitdrive_noaspect

Time: ✅ 72.502µs (SLO: <700.000µs 📉 -89.6%) vs baseline: -2.1%

Memory: ✅ 42.625MB (SLO: <46.000MB -7.3%) vs baseline: +5.2%

✅ ospathsplitext_aspect

Time: ✅ 456.639µs (SLO: <700.000µs 📉 -34.8%) vs baseline: -0.3%

Memory: ✅ 42.605MB (SLO: <46.000MB -7.4%) vs baseline: +5.1%

✅ ospathsplitext_noaspect

Time: ✅ 460.218µs (SLO: <700.000µs 📉 -34.3%) vs baseline: -0.8%

Memory: ✅ 42.585MB (SLO: <46.000MB -7.4%) vs baseline: +5.0%

🟡 Near SLO Breach (2 suites)

🟡 packagespackageforrootmodulemapping - 4/4

✅ cache_off

Time: ✅ 349.261ms (SLO: <354.300ms 🟡 -1.4%) vs baseline: -1.1%

Memory: ✅ 42.505MB (SLO: <46.000MB -7.6%) vs baseline: +6.1%

✅ cache_on

Time: ✅ 0.388µs (SLO: <10.000µs 📉 -96.1%) vs baseline: -0.9%

Memory: ✅ 40.441MB (SLO: <46.000MB 📉 -12.1%) vs baseline: +4.9%

🟡 tracer - 6/6

✅ large

Time: ✅ 31.901ms (SLO: <32.950ms -3.2%) vs baseline: +0.7%

Memory: ✅ 36.726MB (SLO: <39.250MB -6.4%) vs baseline: +5.0%

✅ medium

Time: ✅ 3.135ms (SLO: <3.200ms -2.0%) vs baseline: +0.8%

Memory: ✅ 35.252MB (SLO: <38.750MB -9.0%) vs baseline: +5.3%

✅ small

Time: ✅ 366.586µs (SLO: <370.000µs 🟡 -0.9%) vs baseline: +4.0%

Memory: ✅ 35.232MB (SLO: <38.750MB -9.1%) vs baseline: +4.9%

⚠️ Unstable Tests (2 suites)

⚠️

coreapiscenario - 10/10 (1 unstable)

⚠️ context_with_data_listeners

Time: ⚠️ 13.253µs (SLO: <20.000µs 📉 -33.7%) vs baseline: ~same

Memory: ✅ 35.193MB (SLO: <38.000MB -7.4%) vs baseline: +5.0%

✅ context_with_data_no_listeners

Time: ✅ 3.301µs (SLO: <10.000µs 📉 -67.0%) vs baseline: +1.5%

Memory: ✅ 35.232MB (SLO: <38.000MB -7.3%) vs baseline: +5.3%

✅ get_item_exists

Time: ✅ 0.580µs (SLO: <10.000µs 📉 -94.2%) vs baseline: -0.8%

Memory: ✅ 35.154MB (SLO: <38.000MB -7.5%) vs baseline: +5.2%

✅ get_item_missing

Time: ✅ 0.636µs (SLO: <10.000µs 📉 -93.6%) vs baseline: +0.1%

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

✅ set_item

Time: ✅ 23.901µs (SLO: <30.000µs 📉 -20.3%) vs baseline: -1.1%

Memory: ✅ 35.193MB (SLO: <38.000MB -7.4%) vs baseline: +5.1%

⚠️

packagesupdateimporteddependencies - 24/24 (1 unstable)

✅ import_many

Time: ✅ 157.314µs (SLO: <170.000µs -7.5%) vs baseline: +1.8%

Memory: ✅ 40.115MB (SLO: <46.000MB 📉 -12.8%) vs baseline: +4.7%

✅ import_many_cached

Time: ✅ 121.924µs (SLO: <130.000µs -6.2%) vs baseline: +1.1%

Memory: ✅ 40.022MB (SLO: <46.000MB 📉 -13.0%) vs baseline: +4.5%

✅ import_many_stdlib

Time: ✅ 0.769ms (SLO: <1.750ms 📉 -56.0%) vs baseline: +0.2%

Memory: ✅ 39.978MB (SLO: <46.000MB 📉 -13.1%) vs baseline: +4.7%

⚠️ import_many_stdlib_cached

Time: ⚠️ 0.176ms (SLO: <1.100ms 📉 -84.0%) vs baseline: +0.5%

Memory: ✅ 40.310MB (SLO: <46.000MB 📉 -12.4%) vs baseline: +5.3%

✅ import_many_unknown

Time: ✅ 827.444µs (SLO: <890.000µs -7.0%) vs baseline: +0.2%

Memory: ✅ 40.163MB (SLO: <46.000MB 📉 -12.7%) vs baseline: +5.5%

✅ import_many_unknown_cached

Time: ✅ 790.783µs (SLO: <870.000µs -9.1%) vs baseline: -0.3%

Memory: ✅ 40.091MB (SLO: <46.000MB 📉 -12.8%) vs baseline: +5.0%

✅ import_one

Time: ✅ 19.982µs (SLO: <30.000µs 📉 -33.4%) vs baseline: +0.8%

Memory: ✅ 40.230MB (SLO: <46.000MB 📉 -12.5%) vs baseline: +5.0%

✅ import_one_cache

Time: ✅ 6.321µs (SLO: <10.000µs 📉 -36.8%) vs baseline: +1.1%

Memory: ✅ 40.096MB (SLO: <46.000MB 📉 -12.8%) vs baseline: +5.0%

✅ import_one_stdlib

Time: ✅ 18.848µs (SLO: <20.000µs -5.8%) vs baseline: +1.5%

Memory: ✅ 40.059MB (SLO: <46.000MB 📉 -12.9%) vs baseline: +4.9%

✅ import_one_stdlib_cache

Time: ✅ 6.292µs (SLO: <10.000µs 📉 -37.1%) vs baseline: +0.6%

Memory: ✅ 40.325MB (SLO: <46.000MB 📉 -12.3%) vs baseline: +6.2%

✅ import_one_unknown

Time: ✅ 45.442µs (SLO: <50.000µs -9.1%) vs baseline: ~same

Memory: ✅ 40.232MB (SLO: <46.000MB 📉 -12.5%) vs baseline: +5.8%

✅ import_one_unknown_cache

Time: ✅ 6.301µs (SLO: <10.000µs 📉 -37.0%) vs baseline: +0.2%

Memory: ✅ 40.354MB (SLO: <43.000MB -6.2%) vs baseline: +6.0%

✅ All Tests Passing (18 suites)

✅ djangosimple - 30/30

✅ appsec

Time: ✅ 19.622ms (SLO: <22.300ms 📉 -12.0%) vs baseline: -0.2%

Memory: ✅ 67.609MB (SLO: <73.500MB -8.0%) vs baseline: +5.2%

✅ exception-replay-enabled

Time: ✅ 1.382ms (SLO: <1.450ms -4.7%) vs baseline: ~same

Memory: ✅ 65.736MB (SLO: <71.500MB -8.1%) vs baseline: +5.0%

✅ iast

Time: ✅ 19.673ms (SLO: <22.250ms 📉 -11.6%) vs baseline: -0.5%

Memory: ✅ 67.626MB (SLO: <75.000MB -9.8%) vs baseline: +5.1%

✅ profiler

Time: ✅ 15.373ms (SLO: <16.550ms -7.1%) vs baseline: +0.4%

Memory: ✅ 58.707MB (SLO: <61.000MB -3.8%) vs baseline: +5.4%

✅ resource-renaming

Time: ✅ 19.528ms (SLO: <21.750ms 📉 -10.2%) vs baseline: ~same

Memory: ✅ 67.630MB (SLO: <73.500MB -8.0%) vs baseline: +5.2%

✅ span-code-origin

Time: ✅ 19.975ms (SLO: <28.200ms 📉 -29.2%) vs baseline: +0.2%

Memory: ✅ 67.618MB (SLO: <75.000MB -9.8%) vs baseline: +5.1%

✅ tracer

Time: ✅ 19.655ms (SLO: <21.750ms -9.6%) vs baseline: -0.2%

Memory: ✅ 67.625MB (SLO: <75.000MB -9.8%) vs baseline: +5.2%

✅ tracer-and-profiler

Time: ✅ 21.134ms (SLO: <23.500ms 📉 -10.1%) vs baseline: -0.3%

Memory: ✅ 69.040MB (SLO: <75.000MB -7.9%) vs baseline: +5.1%

✅ tracer-dont-create-db-spans

Time: ✅ 19.805ms (SLO: <21.500ms -7.9%) vs baseline: +0.5%

Memory: ✅ 67.627MB (SLO: <75.000MB -9.8%) vs baseline: +5.2%

✅ tracer-minimal

Time: ✅ 16.921ms (SLO: <17.500ms -3.3%) vs baseline: +0.3%

Memory: ✅ 67.625MB (SLO: <75.000MB -9.8%) vs baseline: +5.1%

✅ tracer-native

Time: ✅ 19.624ms (SLO: <21.750ms -9.8%) vs baseline: +1.1%

Memory: ✅ 67.604MB (SLO: <72.500MB -6.8%) vs baseline: +5.2%

✅ tracer-no-caches

Time: ✅ 17.682ms (SLO: <19.650ms 📉 -10.0%) vs baseline: +0.4%

Memory: ✅ 67.629MB (SLO: <75.000MB -9.8%) vs baseline: +5.2%

✅ tracer-no-databases

Time: ✅ 19.320ms (SLO: <20.100ms -3.9%) vs baseline: +0.3%

Memory: ✅ 67.604MB (SLO: <75.000MB -9.9%) vs baseline: +5.2%

✅ tracer-no-middleware

Time: ✅ 19.347ms (SLO: <21.500ms 📉 -10.0%) vs baseline: +0.2%

Memory: ✅ 67.623MB (SLO: <75.000MB -9.8%) vs baseline: +5.2%

✅ tracer-no-templates

Time: ✅ 19.580ms (SLO: <22.000ms 📉 -11.0%) vs baseline: +0.6%

Memory: ✅ 67.622MB (SLO: <73.500MB -8.0%) vs baseline: +5.1%

✅ errortrackingdjangosimple - 6/6

✅ errortracking-enabled-all

Time: ✅ 16.343ms (SLO: <19.850ms 📉 -17.7%) vs baseline: -0.3%

Memory: ✅ 67.039MB (SLO: <75.000MB 📉 -10.6%) vs baseline: +5.0%

✅ errortracking-enabled-user

Time: ✅ 16.343ms (SLO: <19.400ms 📉 -15.8%) vs baseline: -0.4%

Memory: ✅ 67.112MB (SLO: <75.000MB 📉 -10.5%) vs baseline: +5.1%

✅ tracer-enabled

Time: ✅ 16.406ms (SLO: <19.450ms 📉 -15.7%) vs baseline: +0.4%

Memory: ✅ 67.119MB (SLO: <75.000MB 📉 -10.5%) vs baseline: +5.2%

✅ errortrackingflasksqli - 6/6

✅ errortracking-enabled-all

Time: ✅ 2.122ms (SLO: <2.300ms -7.7%) vs baseline: ~same

Memory: ✅ 54.614MB (SLO: <60.000MB -9.0%) vs baseline: +5.3%

✅ errortracking-enabled-user

Time: ✅ 2.136ms (SLO: <2.250ms -5.1%) vs baseline: ~same

Memory: ✅ 54.576MB (SLO: <60.000MB -9.0%) vs baseline: +5.2%

✅ tracer-enabled

Time: ✅ 2.122ms (SLO: <2.300ms -7.7%) vs baseline: ~same

Memory: ✅ 54.574MB (SLO: <60.000MB -9.0%) vs baseline: +5.2%

✅ flasksimple - 18/18

✅ appsec-get

Time: ✅ 3.443ms (SLO: <4.750ms 📉 -27.5%) vs baseline: -0.2%

Memory: ✅ 54.811MB (SLO: <66.500MB 📉 -17.6%) vs baseline: +5.5%

✅ appsec-post

Time: ✅ 2.920ms (SLO: <6.750ms 📉 -56.7%) vs baseline: +0.3%

Memory: ✅ 54.776MB (SLO: <66.500MB 📉 -17.6%) vs baseline: +5.4%

✅ appsec-telemetry

Time: ✅ 3.469ms (SLO: <4.750ms 📉 -27.0%) vs baseline: +0.7%

Memory: ✅ 54.783MB (SLO: <66.500MB 📉 -17.6%) vs baseline: +5.3%

✅ debugger

Time: ✅ 1.884ms (SLO: <2.000ms -5.8%) vs baseline: +0.3%

Memory: ✅ 48.195MB (SLO: <51.500MB -6.4%) vs baseline: +5.4%

✅ iast-get

Time: ✅ 1.875ms (SLO: <2.000ms -6.3%) vs baseline: ~same

Memory: ✅ 45.151MB (SLO: <49.000MB -7.9%) vs baseline: +5.3%

✅ profiler

Time: ✅ 1.917ms (SLO: <2.100ms -8.7%) vs baseline: +0.2%

Memory: ✅ 50.768MB (SLO: <52.500MB -3.3%) vs baseline: +5.6%

✅ resource-renaming

Time: ✅ 3.412ms (SLO: <3.650ms -6.5%) vs baseline: -0.7%

Memory: ✅ 54.806MB (SLO: <60.000MB -8.7%) vs baseline: +5.6%

✅ tracer

Time: ✅ 3.439ms (SLO: <3.650ms -5.8%) vs baseline: -0.2%

Memory: ✅ 54.764MB (SLO: <60.000MB -8.7%) vs baseline: +5.3%

✅ tracer-native

Time: ✅ 3.449ms (SLO: <3.650ms -5.5%) vs baseline: +0.6%

Memory: ✅ 54.792MB (SLO: <60.000MB -8.7%) vs baseline: +5.3%

✅ flasksqli - 6/6

✅ appsec-enabled

Time: ✅ 2.117ms (SLO: <4.200ms 📉 -49.6%) vs baseline: ~same

Memory: ✅ 54.460MB (SLO: <66.000MB 📉 -17.5%) vs baseline: +4.9%

✅ iast-enabled

Time: ✅ 2.131ms (SLO: <2.800ms 📉 -23.9%) vs baseline: +0.4%

Memory: ✅ 54.555MB (SLO: <62.500MB 📉 -12.7%) vs baseline: +5.3%

✅ tracer-enabled

Time: ✅ 2.116ms (SLO: <2.250ms -6.0%) vs baseline: +0.2%

Memory: ✅ 54.552MB (SLO: <60.000MB -9.1%) vs baseline: +5.1%

✅ forktime - 4/4

✅ baseline

Time: ✅ 1.956ms (SLO: <3.000ms 📉 -34.8%) vs baseline: +3.2%

Memory: ✅ 29.255MB (SLO: <33.000MB 📉 -11.3%) vs baseline: +4.8%

✅ configured

Time: ✅ 8.772ms (SLO: <13.000ms 📉 -32.5%) vs baseline: +0.4%

Memory: ✅ 54.696MB (SLO: <60.000MB -8.8%) vs baseline: +5.1%

✅ httppropagationextract - 60/60

✅ all_styles_all_headers

Time: ✅ 79.055µs (SLO: <100.000µs 📉 -20.9%) vs baseline: +4.7%

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

✅ b3_headers

Time: ✅ 12.812µs (SLO: <20.000µs 📉 -35.9%) vs baseline: +0.3%

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

✅ b3_single_headers

Time: ✅ 11.906µs (SLO: <20.000µs 📉 -40.5%) vs baseline: +0.1%

Memory: ✅ 35.763MB (SLO: <38.000MB -5.9%) vs baseline: +6.3%

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

Time: ✅ 60.899µs (SLO: <80.000µs 📉 -23.9%) vs baseline: ~same

Memory: ✅ 35.763MB (SLO: <38.000MB -5.9%) vs baseline: +6.3%

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

Time: ✅ 62.296µs (SLO: <80.000µs 📉 -22.1%) vs baseline: -0.3%

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

✅ empty_headers

Time: ✅ 1.305µs (SLO: <10.000µs 📉 -86.9%) vs baseline: +0.1%

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

✅ full_t_id_datadog_headers

Time: ✅ 20.958µs (SLO: <30.000µs 📉 -30.1%) vs baseline: +0.3%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +6.5%

✅ invalid_priority_header

Time: ✅ 5.900µs (SLO: <10.000µs 📉 -41.0%) vs baseline: ~same

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +6.7%

✅ invalid_span_id_header

Time: ✅ 5.916µs (SLO: <10.000µs 📉 -40.8%) vs baseline: +0.3%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +5.7%

✅ invalid_tags_header

Time: ✅ 5.938µs (SLO: <10.000µs 📉 -40.6%) vs baseline: +0.8%

Memory: ✅ 35.566MB (SLO: <38.000MB -6.4%) vs baseline: +5.9%

✅ invalid_trace_id_header

Time: ✅ 5.932µs (SLO: <10.000µs 📉 -40.7%) vs baseline: +0.5%

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

✅ large_header_no_matches

Time: ✅ 27.025µs (SLO: <30.000µs -9.9%) vs baseline: -0.2%

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

✅ large_valid_headers_all

Time: ✅ 28.006µs (SLO: <40.000µs 📉 -30.0%) vs baseline: -0.2%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +5.7%

✅ medium_header_no_matches

Time: ✅ 9.270µs (SLO: <20.000µs 📉 -53.6%) vs baseline: +0.3%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +6.4%

✅ medium_valid_headers_all

Time: ✅ 10.669µs (SLO: <20.000µs 📉 -46.7%) vs baseline: +0.2%

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +6.0%

✅ none_propagation_style

Time: ✅ 1.395µs (SLO: <10.000µs 📉 -86.0%) vs baseline: ~same

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +6.4%

✅ tracecontext_headers

Time: ✅ 32.823µs (SLO: <40.000µs 📉 -17.9%) vs baseline: +0.3%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +6.4%

✅ valid_headers_all

Time: ✅ 5.905µs (SLO: <10.000µs 📉 -40.9%) vs baseline: -0.3%

Memory: ✅ 35.783MB (SLO: <38.000MB -5.8%) vs baseline: +6.1%

✅ valid_headers_basic

Time: ✅ 5.502µs (SLO: <10.000µs 📉 -45.0%) vs baseline: -0.5%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +6.1%

✅ wsgi_empty_headers

Time: ✅ 1.306µs (SLO: <10.000µs 📉 -86.9%) vs baseline: +0.3%

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

✅ wsgi_invalid_priority_header

Time: ✅ 5.976µs (SLO: <10.000µs 📉 -40.2%) vs baseline: +0.7%

Memory: ✅ 35.783MB (SLO: <38.000MB -5.8%) vs baseline: +6.3%

✅ wsgi_invalid_span_id_header

Time: ✅ 1.310µs (SLO: <10.000µs 📉 -86.9%) vs baseline: +0.7%

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

✅ wsgi_invalid_tags_header

Time: ✅ 5.978µs (SLO: <10.000µs 📉 -40.2%) vs baseline: +0.4%

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +6.0%

✅ wsgi_invalid_trace_id_header

Time: ✅ 5.990µs (SLO: <10.000µs 📉 -40.1%) vs baseline: +0.1%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +6.2%

✅ wsgi_large_header_no_matches

Time: ✅ 28.214µs (SLO: <40.000µs 📉 -29.5%) vs baseline: +0.2%

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

✅ wsgi_large_valid_headers_all

Time: ✅ 29.215µs (SLO: <40.000µs 📉 -27.0%) vs baseline: ~same

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +5.3%

✅ wsgi_medium_header_no_matches

Time: ✅ 9.478µs (SLO: <20.000µs 📉 -52.6%) vs baseline: ~same

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +5.9%

✅ wsgi_medium_valid_headers_all

Time: ✅ 11.010µs (SLO: <20.000µs 📉 -44.9%) vs baseline: +1.0%

Memory: ✅ 35.802MB (SLO: <38.000MB -5.8%) vs baseline: +6.6%

✅ wsgi_valid_headers_all

Time: ✅ 5.965µs (SLO: <10.000µs 📉 -40.4%) vs baseline: ~same

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +5.8%

✅ wsgi_valid_headers_basic

Time: ✅ 5.505µs (SLO: <10.000µs 📉 -45.0%) vs baseline: -0.7%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +6.4%

✅ httppropagationinject - 16/16

✅ ids_only

Time: ✅ 21.060µs (SLO: <30.000µs 📉 -29.8%) vs baseline: +4.8%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +6.3%

✅ with_all

Time: ✅ 26.921µs (SLO: <40.000µs 📉 -32.7%) vs baseline: -0.3%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +6.1%

✅ with_dd_origin

Time: ✅ 23.860µs (SLO: <30.000µs 📉 -20.5%) vs baseline: -0.7%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +5.9%

✅ with_priority_and_origin

Time: ✅ 23.268µs (SLO: <40.000µs 📉 -41.8%) vs baseline: ~same

Memory: ✅ 35.783MB (SLO: <38.000MB -5.8%) vs baseline: +6.6%

✅ with_sampling_priority

Time: ✅ 20.175µs (SLO: <30.000µs 📉 -32.8%) vs baseline: -0.2%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +6.1%

✅ with_tags

Time: ✅ 25.071µs (SLO: <40.000µs 📉 -37.3%) vs baseline: +0.1%

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +6.3%

✅ with_tags_invalid

Time: ✅ 26.439µs (SLO: <40.000µs 📉 -33.9%) vs baseline: +0.7%

Memory: ✅ 35.783MB (SLO: <38.000MB -5.8%) vs baseline: +6.6%

✅ with_tags_max_size

Time: ✅ 25.474µs (SLO: <40.000µs 📉 -36.3%) vs baseline: +0.5%

Memory: ✅ 35.743MB (SLO: <38.000MB -5.9%) vs baseline: +6.4%

✅ iastaspectssplit - 12/12

✅ rsplit_aspect

Time: ✅ 145.548µs (SLO: <250.000µs 📉 -41.8%) vs baseline: -3.4%

Memory: ✅ 42.546MB (SLO: <46.000MB -7.5%) vs baseline: +4.8%

✅ rsplit_noaspect

Time: ✅ 151.823µs (SLO: <250.000µs 📉 -39.3%) vs baseline: -2.3%

Memory: ✅ 42.585MB (SLO: <46.000MB -7.4%) vs baseline: +5.1%

✅ split_aspect

Time: ✅ 146.372µs (SLO: <250.000µs 📉 -41.5%) vs baseline: -2.8%

Memory: ✅ 42.605MB (SLO: <46.000MB -7.4%) vs baseline: +5.1%

✅ split_noaspect

Time: ✅ 150.565µs (SLO: <250.000µs 📉 -39.8%) vs baseline: -2.6%

Memory: ✅ 42.546MB (SLO: <46.000MB -7.5%) vs baseline: +4.9%

✅ splitlines_aspect

Time: ✅ 148.478µs (SLO: <250.000µs 📉 -40.6%) vs baseline: -1.5%

Memory: ✅ 42.526MB (SLO: <46.000MB -7.6%) vs baseline: +5.1%

✅ splitlines_noaspect

Time: ✅ 151.557µs (SLO: <250.000µs 📉 -39.4%) vs baseline: -0.8%

Memory: ✅ 42.546MB (SLO: <46.000MB -7.5%) vs baseline: +5.1%

✅ iastpropagation - 8/8

✅ no-propagation

Time: ✅ 48.640µs (SLO: <60.000µs 📉 -18.9%) vs baseline: -0.3%

Memory: ✅ 38.987MB (SLO: <42.000MB -7.2%) vs baseline: +5.2%

✅ propagation_enabled

Time: ✅ 138.101µs (SLO: <190.000µs 📉 -27.3%) vs baseline: +1.0%

Memory: ✅ 38.968MB (SLO: <42.000MB -7.2%) vs baseline: +5.1%

✅ propagation_enabled_100

Time: ✅ 1.607ms (SLO: <2.300ms 📉 -30.1%) vs baseline: +0.9%

Memory: ✅ 39.007MB (SLO: <42.000MB -7.1%) vs baseline: +5.0%

✅ propagation_enabled_1000

Time: ✅ 29.724ms (SLO: <34.550ms 📉 -14.0%) vs baseline: +1.4%

Memory: ✅ 38.948MB (SLO: <42.000MB -7.3%) vs baseline: +4.8%

✅ otelsdkspan - 24/24

✅ add-event

Time: ✅ 40.469ms (SLO: <42.000ms -3.6%) vs baseline: ~same

Memory: ✅ 38.083MB (SLO: <40.750MB -6.5%) vs baseline: +5.1%

✅ add-link

Time: ✅ 36.658ms (SLO: <38.550ms -4.9%) vs baseline: +0.5%

Memory: ✅ 38.004MB (SLO: <40.750MB -6.7%) vs baseline: +4.7%

✅ add-metrics

Time: ✅ 220.318ms (SLO: <232.000ms -5.0%) vs baseline: +0.5%

Memory: ✅ 38.083MB (SLO: <40.750MB -6.5%) vs baseline: +5.1%

✅ add-tags

Time: ✅ 212.746ms (SLO: <221.600ms -4.0%) vs baseline: +0.2%

Memory: ✅ 38.083MB (SLO: <40.750MB -6.5%) vs baseline: +5.3%

✅ get-context

Time: ✅ 29.311ms (SLO: <31.300ms -6.4%) vs baseline: -0.4%

Memory: ✅ 38.063MB (SLO: <40.750MB -6.6%) vs baseline: +5.2%

✅ is-recording

Time: ✅ 29.201ms (SLO: <31.000ms -5.8%) vs baseline: +0.4%

Memory: ✅ 37.965MB (SLO: <40.750MB -6.8%) vs baseline: +4.9%

✅ record-exception

Time: ✅ 63.154ms (SLO: <65.850ms -4.1%) vs baseline: -0.3%

Memory: ✅ 38.024MB (SLO: <40.750MB -6.7%) vs baseline: +5.2%

✅ set-status

Time: ✅ 32.209ms (SLO: <34.150ms -5.7%) vs baseline: +0.9%

Memory: ✅ 38.063MB (SLO: <40.750MB -6.6%) vs baseline: +5.2%

✅ start

Time: ✅ 29.546ms (SLO: <30.150ms -2.0%) vs baseline: +2.5%

Memory: ✅ 37.985MB (SLO: <40.750MB -6.8%) vs baseline: +5.1%

✅ start-finish

Time: ✅ 34.142ms (SLO: <35.350ms -3.4%) vs baseline: +0.5%

Memory: ✅ 38.004MB (SLO: <40.750MB -6.7%) vs baseline: +5.0%

✅ start-finish-telemetry

Time: ✅ 33.914ms (SLO: <35.450ms -4.3%) vs baseline: +0.6%

Memory: ✅ 38.004MB (SLO: <40.750MB -6.7%) vs baseline: +5.2%

✅ update-name

Time: ✅ 31.312ms (SLO: <33.400ms -6.3%) vs baseline: +0.4%

Memory: ✅ 38.024MB (SLO: <40.750MB -6.7%) vs baseline: +4.9%

✅ otelspan - 22/22

✅ add-event

Time: ✅ 40.930ms (SLO: <47.150ms 📉 -13.2%) vs baseline: +0.7%

Memory: ✅ 40.331MB (SLO: <47.000MB 📉 -14.2%) vs baseline: +5.3%

✅ add-metrics

Time: ✅ 254.303ms (SLO: <344.800ms 📉 -26.2%) vs baseline: +0.7%

Memory: ✅ 44.796MB (SLO: <47.500MB -5.7%) vs baseline: +5.1%

✅ add-tags

Time: ✅ 305.481ms (SLO: <330.000ms -7.4%) vs baseline: -1.1%

Memory: ✅ 44.815MB (SLO: <47.500MB -5.7%) vs baseline: +5.0%

✅ get-context

Time: ✅ 81.272ms (SLO: <92.350ms 📉 -12.0%) vs baseline: +0.3%

Memory: ✅ 40.655MB (SLO: <46.500MB 📉 -12.6%) vs baseline: +5.7%

✅ is-recording

Time: ✅ 37.137ms (SLO: <44.500ms 📉 -16.5%) vs baseline: +1.0%

Memory: ✅ 40.188MB (SLO: <47.500MB 📉 -15.4%) vs baseline: +5.1%

✅ record-exception

Time: ✅ 59.885ms (SLO: <67.650ms 📉 -11.5%) vs baseline: +0.2%

Memory: ✅ 40.793MB (SLO: <47.000MB 📉 -13.2%) vs baseline: +5.1%

✅ set-status

Time: ✅ 43.801ms (SLO: <50.400ms 📉 -13.1%) vs baseline: +0.3%

Memory: ✅ 40.163MB (SLO: <47.000MB 📉 -14.5%) vs baseline: +5.5%

✅ start

Time: ✅ 38.171ms (SLO: <43.450ms 📉 -12.1%) vs baseline: +5.4%

Memory: ✅ 40.227MB (SLO: <47.000MB 📉 -14.4%) vs baseline: +5.4%

✅ start-finish

Time: ✅ 85.397ms (SLO: <90.000ms -5.1%) vs baseline: +0.5%

Memory: ✅ 37.808MB (SLO: <46.500MB 📉 -18.7%) vs baseline: +4.8%

✅ start-finish-telemetry

Time: ✅ 87.157ms (SLO: <91.000ms -4.2%) vs baseline: +0.5%

Memory: ✅ 37.788MB (SLO: <46.500MB 📉 -18.7%) vs baseline: +4.7%

✅ update-name

Time: ✅ 38.252ms (SLO: <45.150ms 📉 -15.3%) vs baseline: +0.8%

Memory: ✅ 40.417MB (SLO: <47.000MB 📉 -14.0%) vs baseline: +5.4%

✅ ratelimiter - 12/12

✅ defaults

Time: ✅ 2.355µs (SLO: <10.000µs 📉 -76.5%) vs baseline: -1.1%

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

✅ high_rate_limit

Time: ✅ 2.395µs (SLO: <10.000µs 📉 -76.0%) vs baseline: -1.4%

Memory: ✅ 35.488MB (SLO: <38.000MB -6.6%) vs baseline: +6.0%

✅ long_window

Time: ✅ 2.339µs (SLO: <10.000µs 📉 -76.6%) vs baseline: -1.0%

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +6.2%

✅ low_rate_limit

Time: ✅ 2.343µs (SLO: <10.000µs 📉 -76.6%) vs baseline: -1.5%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +6.1%

✅ no_rate_limit

Time: ✅ 0.828µs (SLO: <10.000µs 📉 -91.7%) vs baseline: +0.6%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +6.3%

✅ short_window

Time: ✅ 2.483µs (SLO: <10.000µs 📉 -75.2%) vs baseline: -0.5%

Memory: ✅ 35.625MB (SLO: <38.000MB -6.2%) vs baseline: +6.3%

✅ recursivecomputation - 8/8

✅ deep

Time: ✅ 310.414ms (SLO: <320.950ms -3.3%) vs baseline: ~same

Memory: ✅ 36.471MB (SLO: <38.750MB -5.9%) vs baseline: +5.3%

✅ deep-profiled

Time: ✅ 331.059ms (SLO: <359.150ms -7.8%) vs baseline: -0.3%

Memory: ✅ 42.349MB (SLO: <46.000MB -7.9%) vs baseline: +5.6%

✅ medium

Time: ✅ 7.155ms (SLO: <7.400ms -3.3%) vs baseline: ~same

Memory: ✅ 35.311MB (SLO: <38.000MB -7.1%) vs baseline: +5.6%

✅ shallow

Time: ✅ 0.993ms (SLO: <1.050ms -5.4%) vs baseline: +2.1%

Memory: ✅ 35.330MB (SLO: <38.000MB -7.0%) vs baseline: +5.7%

✅ samplingrules - 8/8

✅ average_match

Time: ✅ 147.081µs (SLO: <290.000µs 📉 -49.3%) vs baseline: -0.6%

Memory: ✅ 35.173MB (SLO: <38.000MB -7.4%) vs baseline: +5.2%

✅ high_match

Time: ✅ 192.633µs (SLO: <480.000µs 📉 -59.9%) vs baseline: ~same

Memory: ✅ 35.193MB (SLO: <38.000MB -7.4%) vs baseline: +5.0%

✅ low_match

Time: ✅ 100.022µs (SLO: <120.000µs 📉 -16.6%) vs baseline: +0.6%

Memory: ✅ 706.848MB (SLO: <780.000MB -9.4%) vs baseline: +4.9%

✅ very_low_match

Time: ✅ 2.862ms (SLO: <8.500ms 📉 -66.3%) vs baseline: -1.1%

Memory: ✅ 78.362MB (SLO: <85.000MB -7.8%) vs baseline: +5.3%

✅ sethttpmeta - 32/32

✅ all-disabled

Time: ✅ 10.509µs (SLO: <20.000µs 📉 -47.5%) vs baseline: -0.4%

Memory: ✅ 36.137MB (SLO: <38.750MB -6.7%) vs baseline: +5.5%

✅ all-enabled

Time: ✅ 41.028µs (SLO: <50.000µs 📉 -17.9%) vs baseline: +1.9%

Memory: ✅ 36.019MB (SLO: <38.750MB -7.0%) vs baseline: +4.9%

✅ collectipvariant_exists

Time: ✅ 40.952µs (SLO: <50.000µs 📉 -18.1%) vs baseline: ~same

Memory: ✅ 36.156MB (SLO: <38.750MB -6.7%) vs baseline: +5.2%

✅ no-collectipvariant

Time: ✅ 40.224µs (SLO: <50.000µs 📉 -19.6%) vs baseline: -0.4%

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

✅ no-useragentvariant

Time: ✅ 39.119µs (SLO: <50.000µs 📉 -21.8%) vs baseline: +0.7%

Memory: ✅ 36.078MB (SLO: <38.750MB -6.9%) vs baseline: +5.1%

✅ obfuscation-no-query

Time: ✅ 40.635µs (SLO: <50.000µs 📉 -18.7%) vs baseline: ~same

Memory: ✅ 36.078MB (SLO: <38.750MB -6.9%) vs baseline: +5.3%

✅ obfuscation-regular-case-explicit-query

Time: ✅ 76.375µs (SLO: <90.000µs 📉 -15.1%) vs baseline: -0.3%

Memory: ✅ 36.196MB (SLO: <38.750MB -6.6%) vs baseline: +5.3%

✅ obfuscation-regular-case-implicit-query

Time: ✅ 77.002µs (SLO: <90.000µs 📉 -14.4%) vs baseline: +0.3%

Memory: ✅ 36.137MB (SLO: <38.750MB -6.7%) vs baseline: +4.8%

✅ obfuscation-send-querystring-disabled

Time: ✅ 155.215µs (SLO: <170.000µs -8.7%) vs baseline: ~same

Memory: ✅ 36.235MB (SLO: <38.750MB -6.5%) vs baseline: +5.6%

✅ obfuscation-worst-case-explicit-query

Time: ✅ 149.829µs (SLO: <160.000µs -6.4%) vs baseline: -0.1%

Memory: ✅ 36.313MB (SLO: <38.750MB -6.3%) vs baseline: +5.4%

✅ obfuscation-worst-case-implicit-query

Time: ✅ 155.897µs (SLO: <170.000µs -8.3%) vs baseline: -0.2%

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

✅ useragentvariant_exists_1

Time: ✅ 39.678µs (SLO: <50.000µs 📉 -20.6%) vs baseline: -0.2%

Memory: ✅ 36.058MB (SLO: <38.750MB -6.9%) vs baseline: +5.2%

✅ useragentvariant_exists_2

Time: ✅ 40.658µs (SLO: <50.000µs 📉 -18.7%) vs baseline: -0.3%

Memory: ✅ 36.019MB (SLO: <38.750MB -7.0%) vs baseline: +5.0%

✅ useragentvariant_exists_3

Time: ✅ 40.219µs (SLO: <50.000µs 📉 -19.6%) vs baseline: -0.1%

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

✅ useragentvariant_not_exists_1

Time: ✅ 39.669µs (SLO: <50.000µs 📉 -20.7%) vs baseline: +0.3%

Memory: ✅ 36.038MB (SLO: <38.750MB -7.0%) vs baseline: +5.3%

✅ useragentvariant_not_exists_2

Time: ✅ 39.769µs (SLO: <50.000µs 📉 -20.5%) vs baseline: +0.6%

Memory: ✅ 36.058MB (SLO: <38.750MB -6.9%) vs baseline: +5.1%

✅ span - 26/26

✅ add-event

Time: ✅ 18.677ms (SLO: <22.500ms 📉 -17.0%) vs baseline: +0.5%

Memory: ✅ 37.591MB (SLO: <53.000MB 📉 -29.1%) vs baseline: +5.3%

✅ add-metrics

Time: ✅ 88.851ms (SLO: <93.500ms -5.0%) vs baseline: +0.3%

Memory: ✅ 42.212MB (SLO: <53.000MB 📉 -20.4%) vs baseline: +5.7%

✅ add-tags

Time: ✅ 144.504ms (SLO: <155.000ms -6.8%) vs baseline: +0.2%

Memory: ✅ 41.916MB (SLO: <53.000MB 📉 -20.9%) vs baseline: +5.2%

✅ get-context

Time: ✅ 17.182ms (SLO: <20.500ms 📉 -16.2%) vs baseline: +0.7%

Memory: ✅ 37.179MB (SLO: <53.000MB 📉 -29.9%) vs baseline: +4.4%

✅ is-recording

Time: ✅ 17.177ms (SLO: <20.500ms 📉 -16.2%) vs baseline: +0.3%

Memory: ✅ 37.336MB (SLO: <53.000MB 📉 -29.6%) vs baseline: +5.5%

✅ record-exception

Time: ✅ 38.167ms (SLO: <41.000ms -6.9%) vs baseline: +0.6%

Memory: ✅ 37.924MB (SLO: <53.000MB 📉 -28.4%) vs baseline: +5.0%

✅ set-status

Time: ✅ 18.822ms (SLO: <22.000ms 📉 -14.4%) vs baseline: ~same

Memory: ✅ 37.336MB (SLO: <53.000MB 📉 -29.6%) vs baseline: +5.2%

✅ start

Time: ✅ 18.070ms (SLO: <20.500ms 📉 -11.9%) vs baseline: +7.2%

Memory: ✅ 37.356MB (SLO: <53.000MB 📉 -29.5%) vs baseline: +5.4%

✅ start-finish

Time: ✅ 53.377ms (SLO: <56.000ms -4.7%) vs baseline: +0.2%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +6.6%

✅ start-finish-telemetry

Time: ✅ 54.535ms (SLO: <58.000ms -6.0%) vs baseline: -0.2%

Memory: ✅ 35.704MB (SLO: <38.000MB -6.0%) vs baseline: +6.5%

✅ start-finish-traceid128

Time: ✅ 55.989ms (SLO: <60.000ms -6.7%) vs baseline: -0.3%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +6.5%

✅ start-traceid128

Time: ✅ 17.114ms (SLO: <22.500ms 📉 -23.9%) vs baseline: +0.8%

Memory: ✅ 37.218MB (SLO: <53.000MB 📉 -29.8%) vs baseline: +5.0%

✅ update-name

Time: ✅ 17.514ms (SLO: <22.000ms 📉 -20.4%) vs baseline: ~same

Memory: ✅ 37.336MB (SLO: <53.000MB 📉 -29.6%) vs baseline: +5.0%

✅ telemetryaddmetric - 30/30

✅ 1-count-metric-1-times

Time: ✅ 2.280µs (SLO: <20.000µs 📉 -88.6%) vs baseline: +8.1%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +5.9%

✅ 1-count-metrics-100-times

Time: ✅ 153.735µs (SLO: <220.000µs 📉 -30.1%) vs baseline: +1.0%

Memory: ✅ 35.488MB (SLO: <38.000MB -6.6%) vs baseline: +5.6%

✅ 1-distribution-metric-1-times

Time: ✅ 2.406µs (SLO: <20.000µs 📉 -88.0%) vs baseline: -0.3%

Memory: ✅ 35.665MB (SLO: <38.000MB -6.1%) vs baseline: +6.7%

✅ 1-distribution-metrics-100-times

Time: ✅ 164.559µs (SLO: <230.000µs 📉 -28.5%) vs baseline: +0.7%

Memory: ✅ 35.645MB (SLO: <38.000MB -6.2%) vs baseline: +6.3%

✅ 1-gauge-metric-1-times

Time: ✅ 1.992µs (SLO: <20.000µs 📉 -90.0%) vs baseline: +1.2%

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +6.1%

✅ 1-gauge-metrics-100-times

Time: ✅ 136.311µs (SLO: <150.000µs -9.1%) vs baseline: -0.7%

Memory: ✅ 35.547MB (SLO: <38.000MB -6.5%) vs baseline: +6.1%

✅ 1-rate-metric-1-times

Time: ✅ 2.257µs (SLO: <20.000µs 📉 -88.7%) vs baseline: -0.2%

Memory: ✅ 35.763MB (SLO: <38.000MB -5.9%) vs baseline: +6.7%

✅ 1-rate-metrics-100-times

Time: ✅ 168.741µs (SLO: <250.000µs 📉 -32.5%) vs baseline: +0.5%

Memory: ✅ 35.606MB (SLO: <38.000MB -6.3%) vs baseline: +6.0%

✅ 100-count-metrics-100-times

Time: ✅ 15.200ms (SLO: <22.000ms 📉 -30.9%) vs baseline: -0.4%

Memory: ✅ 35.507MB (SLO: <38.000MB -6.6%) vs baseline: +5.1%

✅ 100-distribution-metrics-100-times

Time: ✅ 1.728ms (SLO: <2.550ms 📉 -32.2%) vs baseline: +1.2%

Memory: ✅ 35.724MB (SLO: <38.000MB -6.0%) vs baseline: +5.7%

✅ 100-gauge-metrics-100-times

Time: ✅ 1.396ms (SLO: <1.550ms -9.9%) vs baseline: -0.5%

Memory: ✅ 35.684MB (SLO: <38.000MB -6.1%) vs baseline: +5.6%

✅ 100-rate-metrics-100-times

Time: ✅ 1.735ms (SLO: <2.550ms 📉 -31.9%) vs baseline: ~same

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

✅ flush-1-metric

Time: ✅ 3.598µs (SLO: <20.000µs 📉 -82.0%) vs baseline: -0.3%

Memory: ✅ 35.586MB (SLO: <38.000MB -6.4%) vs baseline: +5.2%

✅ flush-100-metrics

Time: ✅ 176.161µs (SLO: <250.000µs 📉 -29.5%) vs baseline: +0.4%

Memory: ✅ 35.566MB (SLO: <38.000MB -6.4%) vs baseline: +4.9%

✅ flush-1000-metrics

Time: ✅ 2.191ms (SLO: <2.500ms 📉 -12.4%) vs baseline: -0.2%

Memory: ✅ 36.372MB (SLO: <38.750MB -6.1%) vs baseline: +5.3%

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

…if-joinable-before-destroying-backport-4.5

brettlangdon and others added 3 commits April 6, 2026 11:27

Merge branch '4.5' of https://github.com/DataDog/dd-trace-py into 4.5

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juanjux requested review from a team as code owners April 6, 2026 14:26

juanjux requested review from Yun-Kim, brettlangdon and ncybul April 6, 2026 14:26

taegyunkim approved these changes Apr 6, 2026

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Merge branch '4.5' into juanjux/kowalski/fix-internal-detach-threads-…

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…if-joinable-before-destroying-backport-4.5

juanjux closed this Apr 7, 2026

juanjux reopened this Apr 7, 2026

juanjux and others added 5 commits April 7, 2026 11:50

Merge branch '4.5' into juanjux/kowalski/fix-internal-detach-threads-…

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…if-joinable-before-destroying-backport-4.5

Merge branch '4.5' into juanjux/kowalski/fix-internal-detach-threads-…

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Merge branch '4.5' into juanjux/kowalski/fix-internal-detach-threads-…

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Merge branch '4.5' into juanjux/kowalski/fix-internal-detach-threads-…

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Merge branch '4.5' into juanjux/kowalski/fix-internal-detach-threads-…

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…if-joinable-before-destroying-backport-4.5

KowalskiThomas enabled auto-merge (squash) April 7, 2026 14:51

juanjux disabled auto-merge April 7, 2026 14:53

juanjux merged commit 980367a into 4.5 Apr 7, 2026
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juanjux deleted the juanjux/kowalski/fix-internal-detach-threads-if-joinable-before-destroying-backport-4.5 branch April 7, 2026 14:53

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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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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

✅ ospathsplitdrive_aspect

✅ ospathsplitdrive_noaspect

✅ ospathsplitext_aspect

✅ ospathsplitext_noaspect

pr-commenter Bot commented Apr 6, 2026 •

edited

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