[Native] Performance improvements #8149

tonyredondo · 2026-02-03T16:44:45Z

Summary of changes

Introduce ModuleRegistry and AppDomainRegistry to manage modules/appdomains with shared locks and atomic state, replacing module_ids and the appdomain set in hot paths.
Optimize inlining checks with an atomic flag (inline_blockers_enabled_) to skip work when no instrumentation is active.
Reduce work in TraceAttribute scanning by enumerating only matching custom attributes instead of scanning all and resolving constructors.
Improve ReJIT tracking with an unordered_set for O(1) lookups and prevent duplicate NGEN inliner registration.
Add native tests for the new registries and ReJIT history; add IID stubs for non‑Windows; update CMake/vcxproj to include tests and define DD_TESTS.

Reason for change

Reduce contention and unnecessary work in profiler hot paths (ModuleLoad/JIT/JITInlining/TraceAttribute scan) to improve performance.
Enable unit tests for the new helpers and ReJIT tracking consistently on Windows and non‑Windows.

Implementation details

Replace Synchronized<std::vector<ModuleID>> with ModuleRegistry (membership + snapshot + ModuleState) and use AppDomainRegistry for the appdomain set.
Gate JITInlining work behind inline_blockers_enabled_, enabled when instrumentations/IAST/dataflow/trace methods/probes are present.
RejitHandler now uses unordered_set<MethodKey> and adds a test-only helper under DD_TESTS.
TryRejitModule records module state, marks NGEN inliners only once, and narrows TraceAttribute enumeration.

Test coverage

New tests: appdomain_registry_test.cpp, module_registry_test.cpp, rejit_history_test.cpp.

Other details

DD_TESTS added to Datadog.Tracer.Native.Tests.vcxproj (Windows).
In CMake, -static-libgcc/-static-libstdc++/-lstdc++fs are Linux-only.

pr-commenter · 2026-02-03T18:14:45Z

Benchmarks

Benchmark execution time: 2026-02-03 19:27:31

Comparing candidate commit b9e3a12 in PR branch tony/native-performance-improvements with baseline commit 9ffd7d6 in branch master.

Found 9 performance improvements and 11 performance regressions! Performance is the same for 150 metrics, 22 unstable metrics.

scenario:Benchmarks.Trace.ActivityBenchmark.StartStopWithChild netcoreapp3.1

🟥 execution_time [+109.767ms; +112.043ms] or [+117.756%; +120.197%]

scenario:Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces net6.0

🟥 execution_time [+84.836ms; +85.092ms] or [+69.718%; +69.928%]

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody net472

🟩 throughput [+59600.845op/s; +63601.108op/s] or [+6.415%; +6.846%]

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody net6.0

🟩 execution_time [-24.562ms; -18.423ms] or [-11.227%; -8.422%]

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody netcoreapp3.1

🟥 execution_time [+19.920ms; +26.465ms] or [+10.282%; +13.660%]

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.ObjectExtractorMoreComplexBody net6.0

🟩 execution_time [-20.864ms; -16.952ms] or [-9.764%; -7.933%]

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.ObjectExtractorSimpleBody netcoreapp3.1

🟩 execution_time [-20.007ms; -14.163ms] or [-9.222%; -6.528%]

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeLegacyArgs netcoreapp3.1

🟥 execution_time [+19.521ms; +20.137ms] or [+10.783%; +11.123%]

scenario:Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces netcoreapp3.1

🟥 execution_time [+31.806ms; +38.242ms] or [+17.252%; +20.744%]
🟩 throughput [+131.788op/s; +180.708op/s] or [+10.095%; +13.843%]

scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice net6.0

🟥 execution_time [+96.160µs; +105.493µs] or [+6.989%; +7.667%]
🟥 throughput [-51.891op/s; -47.351op/s] or [-7.140%; -6.515%]

scenario:Benchmarks.Trace.DbCommandBenchmark.ExecuteNonQuery net6.0

🟥 throughput [-39486.801op/s; -29152.841op/s] or [-7.373%; -5.443%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch net6.0

🟥 execution_time [+15.078ms; +15.722ms] or [+7.569%; +7.892%]

scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog netcoreapp3.1

🟥 execution_time [+11.355ms; +16.133ms] or [+5.728%; +8.138%]

scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark net6.0

🟩 execution_time [-6.377µs; -2.422µs] or [-13.525%; -5.137%]
🟩 throughput [+1316.672op/s; +2904.893op/s] or [+6.158%; +13.586%]

scenario:Benchmarks.Trace.Log4netBenchmark.EnrichedLog netcoreapp3.1

🟩 execution_time [-38.834ms; -34.856ms] or [-19.101%; -17.144%]

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope net6.0

🟩 execution_time [-17.260ms; -12.934ms] or [-8.051%; -6.033%]

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope netcoreapp3.1

🟥 execution_time [+13.188ms; +18.873ms] or [+6.716%; +9.611%]

dd-trace-dotnet-ci-bot · 2026-02-03T19:42:40Z

Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing This PR (8149) and master.

⚠️ Potential regressions detected

FakeDbCommand

Metric	Master (Mean ± 95% CI)	Current (Mean ± 95% CI)	Change	Status
.NET 8 - CallTarget+Inlining+NGEN
runtime.dotnet.mem.committed	37.02 ± (36.98 - 37.05) MB	41.99 ± (41.97 - 42.02) MB	+13.5%	❌⬆️

Full Metrics Comparison

FakeDbCommand

Metric	Master (Mean ± 95% CI)	Current (Mean ± 95% CI)	Change	Status
.NET Framework 4.8 - Baseline
duration	79.31 ± (79.13 - 79.51) ms	79.64 ± (79.54 - 79.87) ms	+0.4%	✅⬆️
.NET Framework 4.8 - Bailout
duration	84.40 ± (84.33 - 84.70) ms	84.62 ± (84.48 - 84.85) ms	+0.3%	✅⬆️
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration	1121.11 ± (1118.66 - 1126.25) ms	1126.50 ± (1129.58 - 1140.62) ms	+0.5%	✅⬆️
.NET Core 3.1 - Baseline
process.internal_duration_ms	24.30 ± (24.23 - 24.36) ms	24.50 ± (24.44 - 24.56) ms	+0.8%	✅⬆️
process.time_to_main_ms	94.22 ± (94.02 - 94.42) ms	95.30 ± (95.08 - 95.51) ms	+1.1%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.94 ± (10.93 - 10.94) MB	10.95 ± (10.94 - 10.95) MB	+0.1%	✅⬆️
runtime.dotnet.threads.count	12 ± (12 - 12)	12 ± (12 - 12)	+0.0%	✅
.NET Core 3.1 - Bailout
process.internal_duration_ms	24.07 ± (24.01 - 24.13) ms	24.52 ± (24.46 - 24.58) ms	+1.9%	✅⬆️
process.time_to_main_ms	94.28 ± (94.04 - 94.52) ms	96.37 ± (96.18 - 96.56) ms	+2.2%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.97 ± (10.97 - 10.97) MB	10.98 ± (10.98 - 10.99) MB	+0.1%	✅⬆️
runtime.dotnet.threads.count	13 ± (13 - 13)	13 ± (13 - 13)	+0.0%	✅
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms	230.48 ± (227.83 - 233.13) ms	291.93 ± (290.93 - 292.94) ms	+26.7%	✅⬆️
process.time_to_main_ms	535.49 ± (534.59 - 536.39) ms	555.89 ± (554.02 - 557.77) ms	+3.8%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	48.57 ± (48.55 - 48.60) MB	52.82 ± (52.56 - 53.08) MB	+8.7%	✅⬆️
runtime.dotnet.threads.count	28 ± (28 - 28)	28 ± (28 - 28)	+0.0%	✅⬆️
.NET 6 - Baseline
process.internal_duration_ms	22.79 ± (22.75 - 22.84) ms	22.97 ± (22.92 - 23.03) ms	+0.8%	✅⬆️
process.time_to_main_ms	81.11 ± (80.93 - 81.29) ms	81.83 ± (81.63 - 82.03) ms	+0.9%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.64 ± (10.64 - 10.64) MB	10.65 ± (10.65 - 10.66) MB	+0.2%	✅⬆️
runtime.dotnet.threads.count	10 ± (10 - 10)	10 ± (10 - 10)	+0.0%	✅
.NET 6 - Bailout
process.internal_duration_ms	22.70 ± (22.65 - 22.76) ms	23.18 ± (23.11 - 23.25) ms	+2.1%	✅⬆️
process.time_to_main_ms	82.45 ± (82.32 - 82.58) ms	84.01 ± (83.82 - 84.21) ms	+1.9%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.72 ± (10.72 - 10.73) MB	10.76 ± (10.76 - 10.77) MB	+0.4%	✅⬆️
runtime.dotnet.threads.count	11 ± (11 - 11)	11 ± (11 - 11)	+0.0%	✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms	234.06 ± (229.89 - 238.23) ms	273.58 ± (272.60 - 274.55) ms	+16.9%	✅⬆️
process.time_to_main_ms	507.09 ± (506.08 - 508.09) ms	515.19 ± (514.09 - 516.30) ms	+1.6%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	49.17 ± (49.15 - 49.20) MB	50.02 ± (49.98 - 50.05) MB	+1.7%	✅⬆️
runtime.dotnet.threads.count	28 ± (28 - 28)	28 ± (28 - 28)	+0.1%	✅⬆️
.NET 8 - Baseline
process.internal_duration_ms	20.51 ± (20.47 - 20.55) ms	21.73 ± (21.67 - 21.78) ms	+5.9%	✅⬆️
process.time_to_main_ms	78.03 ± (77.84 - 78.23) ms	88.53 ± (88.35 - 88.71) ms	+13.5%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	7.68 ± (7.68 - 7.69) MB	12.28 ± (12.27 - 12.29) MB	+59.8%	✅⬆️
runtime.dotnet.threads.count	10 ± (10 - 10)	10 ± (10 - 10)	+0.0%	✅
.NET 8 - Bailout
process.internal_duration_ms	20.47 ± (20.42 - 20.52) ms	21.57 ± (21.50 - 21.64) ms	+5.4%	✅⬆️
process.time_to_main_ms	79.01 ± (78.80 - 79.22) ms	89.96 ± (89.75 - 90.17) ms	+13.9%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	7.74 ± (7.73 - 7.75) MB	12.33 ± (12.32 - 12.34) MB	+59.3%	✅⬆️
runtime.dotnet.threads.count	11 ± (11 - 11)	11 ± (11 - 11)	+0.0%	✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms	196.85 ± (196.07 - 197.62) ms	203.97 ± (203.11 - 204.83) ms	+3.6%	✅⬆️
process.time_to_main_ms	484.07 ± (483.12 - 485.03) ms	526.93 ± (525.22 - 528.64) ms	+8.9%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	37.02 ± (36.98 - 37.05) MB	41.99 ± (41.97 - 42.02) MB	+13.5%	❌⬆️
runtime.dotnet.threads.count	27 ± (27 - 27)	27 ± (27 - 27)	+0.2%	✅⬆️

HttpMessageHandler

Metric	Master (Mean ± 95% CI)	Current (Mean ± 95% CI)	Change	Status
.NET Framework 4.8 - Baseline
duration	203.83 ± (203.44 - 204.53) ms	202.41 ± (202.36 - 203.43) ms	-0.7%	✅
.NET Framework 4.8 - Bailout
duration	206.62 ± (206.50 - 207.47) ms	210.17 ± (210.00 - 211.10) ms	+1.7%	✅⬆️
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration	1188.00 ± (1187.93 - 1194.72) ms	1178.97 ± (1181.94 - 1191.59) ms	-0.8%	✅
.NET Core 3.1 - Baseline
process.internal_duration_ms	199.68 ± (199.16 - 200.20) ms	195.54 ± (195.05 - 196.03) ms	-2.1%	✅
process.time_to_main_ms	86.45 ± (86.20 - 86.70) ms	84.73 ± (84.44 - 85.03) ms	-2.0%	✅
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	16.09 ± (16.07 - 16.10) MB	16.15 ± (16.12 - 16.17) MB	+0.4%	✅⬆️
runtime.dotnet.threads.count	20 ± (20 - 20)	20 ± (20 - 20)	-0.1%	✅
.NET Core 3.1 - Bailout
process.internal_duration_ms	198.70 ± (198.19 - 199.22) ms	197.43 ± (196.95 - 197.91) ms	-0.6%	✅
process.time_to_main_ms	87.86 ± (87.59 - 88.14) ms	86.82 ± (86.61 - 87.03) ms	-1.2%	✅
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	16.17 ± (16.15 - 16.18) MB	16.12 ± (16.10 - 16.14) MB	-0.3%	✅
runtime.dotnet.threads.count	21 ± (21 - 21)	21 ± (21 - 21)	-0.9%	✅
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms	424.41 ± (420.95 - 427.87) ms	452.02 ± (450.54 - 453.50) ms	+6.5%	✅⬆️
process.time_to_main_ms	504.42 ± (503.42 - 505.43) ms	500.31 ± (499.06 - 501.55) ms	-0.8%	✅
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	59.27 ± (59.17 - 59.38) MB	58.84 ± (58.77 - 58.92) MB	-0.7%	✅
runtime.dotnet.threads.count	29 ± (29 - 30)	29 ± (29 - 29)	-0.1%	✅
.NET 6 - Baseline
process.internal_duration_ms	205.14 ± (204.55 - 205.74) ms	205.26 ± (204.67 - 205.85) ms	+0.1%	✅⬆️
process.time_to_main_ms	75.66 ± (75.43 - 75.90) ms	75.62 ± (75.37 - 75.87) ms	-0.1%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	16.29 ± (16.27 - 16.31) MB	16.28 ± (16.26 - 16.30) MB	-0.1%	✅
runtime.dotnet.threads.count	19 ± (19 - 19)	19 ± (19 - 19)	+0.8%	✅⬆️
.NET 6 - Bailout
process.internal_duration_ms	207.27 ± (206.73 - 207.81) ms	204.09 ± (203.56 - 204.63) ms	-1.5%	✅
process.time_to_main_ms	77.70 ± (77.48 - 77.91) ms	75.87 ± (75.69 - 76.06) ms	-2.3%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	16.34 ± (16.32 - 16.36) MB	16.33 ± (16.31 - 16.34) MB	-0.1%	✅
runtime.dotnet.threads.count	20 ± (20 - 20)	20 ± (20 - 20)	-0.2%	✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms	449.99 ± (445.76 - 454.23) ms	467.82 ± (466.07 - 469.57) ms	+4.0%	✅⬆️
process.time_to_main_ms	486.90 ± (485.85 - 487.96) ms	492.14 ± (489.74 - 494.54) ms	+1.1%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	59.30 ± (59.12 - 59.48) MB	60.49 ± (60.19 - 60.78) MB	+2.0%	✅⬆️
runtime.dotnet.threads.count	30 ± (30 - 30)	30 ± (30 - 30)	+0.7%	✅⬆️
.NET 8 - Baseline
process.internal_duration_ms	204.67 ± (204.16 - 205.18) ms	218.79 ± (217.31 - 220.27) ms	+6.9%	✅⬆️
process.time_to_main_ms	74.84 ± (74.63 - 75.04) ms	78.18 ± (77.82 - 78.53) ms	+4.5%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	11.65 ± (11.63 - 11.66) MB	11.50 ± (11.48 - 11.52) MB	-1.2%	✅
runtime.dotnet.threads.count	19 ± (19 - 19)	19 ± (19 - 19)	+1.7%	✅⬆️
.NET 8 - Bailout
process.internal_duration_ms	204.92 ± (204.36 - 205.49) ms	209.23 ± (208.41 - 210.05) ms	+2.1%	✅⬆️
process.time_to_main_ms	76.42 ± (76.22 - 76.63) ms	77.63 ± (77.36 - 77.91) ms	+1.6%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	11.68 ± (11.67 - 11.69) MB	11.64 ± (11.63 - 11.66) MB	-0.3%	✅
runtime.dotnet.threads.count	20 ± (20 - 20)	20 ± (20 - 20)	+0.3%	✅⬆️
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms	471.39 ± (464.37 - 478.40) ms	395.62 ± (389.49 - 401.75) ms	-16.1%	✅
process.time_to_main_ms	481.53 ± (480.09 - 482.96) ms	493.86 ± (492.31 - 495.40) ms	+2.6%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	50.53 ± (50.49 - 50.57) MB	53.93 ± (53.72 - 54.14) MB	+6.7%	✅⬆️
runtime.dotnet.threads.count	29 ± (29 - 29)	29 ± (29 - 29)	+1.2%	✅⬆️

Comparison explanation

Execution-time benchmarks measure the whole time it takes to execute a program, and are intended to measure the one-off costs. Cases where the execution time results for the PR are worse than latest master results are highlighted in **red**. The following thresholds were used for comparing the execution times:

Welch test with statistical test for significance of 5%
Only results indicating a difference greater than 5% and 5 ms are considered.

Note that these results are based on a single point-in-time result for each branch. For full results, see the dashboard.

Graphs show the p99 interval based on the mean and StdDev of the test run, as well as the mean value of the run (shown as a diamond below the graph).

Duration charts

FakeDbCommand (.NET Framework 4.8)

gantt
    title Execution time (ms) FakeDbCommand (.NET Framework 4.8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (80ms)  : 78, 82
    master - mean (79ms)  : 77, 82

    section Bailout
    This PR (8149) - mean (85ms)  : 83, 86
    master - mean (85ms)  : 83, 86

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (1,135ms)  : 1052, 1218
    master - mean (1,122ms)  : 1067, 1178

FakeDbCommand (.NET Core 3.1)

gantt
    title Execution time (ms) FakeDbCommand (.NET Core 3.1)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (127ms)  : 124, 131
    master - mean (126ms)  : 123, 129

    section Bailout
    This PR (8149) - mean (128ms)  : 126, 131
    master - mean (126ms)  : 122, 130

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (890ms)  : crit, 853, 926
    master - mean (808ms)  : 755, 860

FakeDbCommand (.NET 6)

gantt
    title Execution time (ms) FakeDbCommand (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (112ms)  : 109, 115
    master - mean (111ms)  : 108, 114

    section Bailout
    This PR (8149) - mean (114ms)  : 112, 117
    master - mean (112ms)  : 110, 114

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (829ms)  : 803, 854
    master - mean (784ms)  : 717, 851

FakeDbCommand (.NET 8)

gantt
    title Execution time (ms) FakeDbCommand (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (119ms)  : 116, 123
    master - mean (107ms)  : 103, 111

    section Bailout
    This PR (8149) - mean (120ms)  : crit, 118, 123
    master - mean (108ms)  : 105, 111

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (776ms)  : crit, 747, 806
    master - mean (723ms)  : 698, 749

HttpMessageHandler (.NET Framework 4.8)

gantt
    title Execution time (ms) HttpMessageHandler (.NET Framework 4.8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (203ms)  : 195, 211
    master - mean (204ms)  : 196, 212

    section Bailout
    This PR (8149) - mean (211ms)  : 203, 219
    master - mean (207ms)  : 200, 213

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (1,187ms)  : 1118, 1255
    master - mean (1,191ms)  : 1143, 1239

HttpMessageHandler (.NET Core 3.1)

gantt
    title Execution time (ms) HttpMessageHandler (.NET Core 3.1)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (290ms)  : 283, 296
    master - mean (296ms)  : 283, 309

    section Bailout
    This PR (8149) - mean (294ms)  : 283, 304
    master - mean (296ms)  : 288, 305

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (992ms)  : 959, 1025
    master - mean (972ms)  : 910, 1033

HttpMessageHandler (.NET 6)

gantt
    title Execution time (ms) HttpMessageHandler (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (290ms)  : 277, 303
    master - mean (290ms)  : 276, 304

    section Bailout
    This PR (8149) - mean (289ms)  : 280, 299
    master - mean (294ms)  : 284, 305

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (999ms)  : 942, 1056
    master - mean (979ms)  : 906, 1053

HttpMessageHandler (.NET 8)

gantt
    title Execution time (ms) HttpMessageHandler (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8149) - mean (308ms)  : 283, 334
    master - mean (291ms)  : 281, 300

    section Bailout
    This PR (8149) - mean (298ms)  : 282, 314
    master - mean (292ms)  : 281, 302

    section CallTarget+Inlining+NGEN
    This PR (8149) - mean (921ms)  : 830, 1012
    master - mean (993ms)  : 877, 1108

tonyredondo added 2 commits February 3, 2026 17:41

Review native tracer updates

bf80ac5

fix(native tests): define DD_TESTS on Windows

583b4ed

fix(trace-annotations): handle type def and ref

b9e3a12

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[Native] Performance improvements #8149

[Native] Performance improvements #8149

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tonyredondo commented Feb 3, 2026 •

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pr-commenter bot commented Feb 3, 2026 •

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dd-trace-dotnet-ci-bot bot commented Feb 3, 2026

FakeDbCommand

HttpMessageHandler

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[Native] Performance improvements #8149

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[Native] Performance improvements #8149

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tonyredondo commented Feb 3, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Summary of changes

Reason for change

Implementation details

Test coverage

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Benchmarks

scenario:Benchmarks.Trace.ActivityBenchmark.StartStopWithChild netcoreapp3.1

scenario:Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces net6.0

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody net472

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody net6.0

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.AllCycleSimpleBody netcoreapp3.1

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.ObjectExtractorMoreComplexBody net6.0

scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.ObjectExtractorSimpleBody netcoreapp3.1

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeLegacyArgs netcoreapp3.1

scenario:Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces netcoreapp3.1

scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice net6.0

scenario:Benchmarks.Trace.DbCommandBenchmark.ExecuteNonQuery net6.0

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch net6.0

scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog netcoreapp3.1

scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark net6.0

scenario:Benchmarks.Trace.Log4netBenchmark.EnrichedLog netcoreapp3.1

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope net6.0

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope netcoreapp3.1

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dd-trace-dotnet-ci-bot bot commented Feb 3, 2026

Execution-Time Benchmarks Report ⏱️

⚠️ Potential regressions detected

FakeDbCommand

FakeDbCommand

HttpMessageHandler

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tonyredondo commented Feb 3, 2026 •

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