Serialize RuntimeIdTests and HttpHeaderHelperTests to remove telemetry header flake by NachoEchevarria · Pull Request #8638 · DataDog/dd-trace-dotnet

NachoEchevarria · 2026-05-14T16:10:04Z

Summary of changes

Add [Collection(nameof(EnvironmentVariablesTestCollection))] to RuntimeIdTests so they cannot run in parallel.

Reason for change

HttpHeaderHelperTests.TelemetryAgentHttpHeaderHelper_WritesExpectedHeaders flaked in build 201656: expected included DD-Root-Session-ID: inherited-root-session-id, actual did not.

RuntimeIdTests transiently sets RuntimeId._rootSessionId = "inherited-root-session-id" before restoring it in finally. xUnit runs test classes in parallel, and the log confirms RuntimeIdTests (6ms) ran inside HttpHeaderHelperTests's 146ms window. The race:

helper.DefaultHeaders read fresh during the mutation window → expected includes the root header.
helper.WriteLeadingHeaders populated the once-per-process cache TelemetryHttpHeaderNames._httpSerializedDefaultAgentHeaders after RuntimeIdTests restored state → actual lacks it.

Implementation details

RuntimeIdTests.cs — gains [Collection(...)]. It already mutates _DD_ROOT_DOTNET_SESSION_ID, so it belongs here anyway.

Production code is unchanged: the lazy cache and static field are fine because _rootSessionId is set once at startup in real runs.

Test coverage

No new tests — existing coverage is preserved, just no longer racing.

Other details

dd-trace-dotnet-ci-bot · 2026-05-14T17:00:05Z

Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing This PR (8638) and master.

✅ No regressions detected - check the details below

Full Metrics Comparison

FakeDbCommand

Metric	Master (Mean ± 95% CI)	Current (Mean ± 95% CI)	Change	Status
.NET Framework 4.8 - Baseline
duration	72.76 ± (72.95 - 73.39) ms	74.18 ± (74.23 - 74.76) ms	+1.9%	✅⬆️
.NET Framework 4.8 - Bailout
duration	79.27 ± (79.12 - 79.65) ms	76.91 ± (76.77 - 77.17) ms	-3.0%	✅
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration	1107.49 ± (1108.19 - 1116.57) ms	1105.93 ± (1103.53 - 1110.42) ms	-0.1%	✅
.NET Core 3.1 - Baseline
process.internal_duration_ms	22.85 ± (22.79 - 22.91) ms	22.67 ± (22.62 - 22.72) ms	-0.8%	✅
process.time_to_main_ms	86.84 ± (86.52 - 87.16) ms	85.49 ± (85.20 - 85.78) ms	-1.6%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.93 ± (10.93 - 10.93) MB	10.92 ± (10.92 - 10.92) MB	-0.1%	✅
runtime.dotnet.threads.count	12 ± (12 - 12)	12 ± (12 - 12)	+0.0%	✅
.NET Core 3.1 - Bailout
process.internal_duration_ms	22.47 ± (22.42 - 22.51) ms	22.42 ± (22.38 - 22.46) ms	-0.2%	✅
process.time_to_main_ms	86.71 ± (86.47 - 86.94) ms	86.13 ± (85.90 - 86.37) ms	-0.7%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.97 ± (10.97 - 10.97) MB	10.96 ± (10.96 - 10.96) 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	213.42 ± (212.58 - 214.26) ms	214.50 ± (213.65 - 215.34) ms	+0.5%	✅⬆️
process.time_to_main_ms	541.49 ± (539.99 - 542.99) ms	544.36 ± (543.08 - 545.65) ms	+0.5%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	48.59 ± (48.56 - 48.62) MB	48.59 ± (48.56 - 48.62) MB	-0.0%	✅
runtime.dotnet.threads.count	28 ± (28 - 28)	28 ± (28 - 28)	+0.3%	✅⬆️
.NET 6 - Baseline
process.internal_duration_ms	21.29 ± (21.24 - 21.34) ms	21.65 ± (21.60 - 21.71) ms	+1.7%	✅⬆️
process.time_to_main_ms	73.88 ± (73.62 - 74.13) ms	76.07 ± (75.78 - 76.36) ms	+3.0%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.63 ± (10.63 - 10.64) MB	10.64 ± (10.64 - 10.65) MB	+0.1%	✅⬆️
runtime.dotnet.threads.count	10 ± (10 - 10)	10 ± (10 - 10)	+0.0%	✅
.NET 6 - Bailout
process.internal_duration_ms	21.41 ± (21.36 - 21.47) ms	21.24 ± (21.19 - 21.28) ms	-0.8%	✅
process.time_to_main_ms	76.44 ± (76.18 - 76.70) ms	75.39 ± (75.17 - 75.62) ms	-1.4%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.74 ± (10.74 - 10.74) MB	10.76 ± (10.76 - 10.76) MB	+0.2%	✅⬆️
runtime.dotnet.threads.count	11 ± (11 - 11)	11 ± (11 - 11)	+0.0%	✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms	370.09 ± (367.63 - 372.56) ms	367.19 ± (365.09 - 369.29) ms	-0.8%	✅
process.time_to_main_ms	548.37 ± (546.95 - 549.79) ms	550.02 ± (548.59 - 551.45) ms	+0.3%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	50.07 ± (50.04 - 50.10) MB	50.03 ± (50.01 - 50.05) MB	-0.1%	✅
runtime.dotnet.threads.count	28 ± (28 - 28)	28 ± (28 - 28)	-0.0%	✅
.NET 8 - Baseline
process.internal_duration_ms	19.24 ± (19.20 - 19.27) ms	19.40 ± (19.36 - 19.44) ms	+0.9%	✅⬆️
process.time_to_main_ms	71.88 ± (71.73 - 72.03) ms	72.88 ± (72.69 - 73.07) ms	+1.4%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	7.68 ± (7.67 - 7.68) MB	7.69 ± (7.68 - 7.69) MB	+0.2%	✅⬆️
runtime.dotnet.threads.count	10 ± (10 - 10)	10 ± (10 - 10)	+0.0%	✅
.NET 8 - Bailout
process.internal_duration_ms	19.59 ± (19.54 - 19.64) ms	19.94 ± (19.87 - 20.02) ms	+1.8%	✅⬆️
process.time_to_main_ms	75.16 ± (74.89 - 75.44) ms	77.68 ± (77.37 - 77.98) ms	+3.3%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	7.74 ± (7.74 - 7.75) MB	7.72 ± (7.72 - 7.73) MB	-0.2%	✅
runtime.dotnet.threads.count	11 ± (11 - 11)	11 ± (11 - 11)	+0.0%	✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms	294.32 ± (292.35 - 296.28) ms	292.79 ± (290.79 - 294.80) ms	-0.5%	✅
process.time_to_main_ms	498.91 ± (497.96 - 499.85) ms	499.44 ± (498.28 - 500.59) ms	+0.1%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	36.95 ± (36.92 - 36.98) MB	36.96 ± (36.93 - 36.98) MB	+0.0%	✅⬆️
runtime.dotnet.threads.count	27 ± (27 - 27)	27 ± (27 - 27)	+0.6%	✅⬆️

HttpMessageHandler

Metric	Master (Mean ± 95% CI)	Current (Mean ± 95% CI)	Change	Status
.NET Framework 4.8 - Baseline
duration	199.94 ± (199.87 - 200.68) ms	196.64 ± (196.13 - 197.06) ms	-1.6%	✅
.NET Framework 4.8 - Bailout
duration	202.91 ± (202.78 - 203.77) ms	200.42 ± (200.06 - 200.89) ms	-1.2%	✅
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration	1196.74 ± (1196.53 - 1202.41) ms	1183.60 ± (1184.53 - 1190.34) ms	-1.1%	✅
.NET Core 3.1 - Baseline
process.internal_duration_ms	193.85 ± (193.33 - 194.37) ms	191.78 ± (191.37 - 192.20) ms	-1.1%	✅
process.time_to_main_ms	83.38 ± (83.07 - 83.69) ms	83.01 ± (82.76 - 83.26) ms	-0.4%	✅
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	16.05 ± (16.03 - 16.07) MB	16.07 ± (16.05 - 16.10) MB	+0.2%	✅⬆️
runtime.dotnet.threads.count	20 ± (20 - 20)	20 ± (20 - 20)	-0.1%	✅
.NET Core 3.1 - Bailout
process.internal_duration_ms	193.99 ± (193.45 - 194.52) ms	190.69 ± (190.18 - 191.20) ms	-1.7%	✅
process.time_to_main_ms	85.07 ± (84.69 - 85.45) ms	83.98 ± (83.73 - 84.24) ms	-1.3%	✅
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	16.20 ± (16.17 - 16.22) MB	16.15 ± (16.12 - 16.18) MB	-0.3%	✅
runtime.dotnet.threads.count	21 ± (20 - 21)	21 ± (21 - 21)	+0.0%	✅⬆️
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms	388.15 ± (386.60 - 389.70) ms	384.28 ± (383.11 - 385.45) ms	-1.0%	✅
process.time_to_main_ms	536.10 ± (534.70 - 537.49) ms	534.83 ± (533.75 - 535.91) ms	-0.2%	✅
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	57.92 ± (57.71 - 58.14) MB	57.28 ± (57.17 - 57.40) MB	-1.1%	✅
runtime.dotnet.threads.count	30 ± (30 - 30)	30 ± (30 - 30)	-0.5%	✅
.NET 6 - Baseline
process.internal_duration_ms	198.89 ± (198.37 - 199.41) ms	195.68 ± (195.25 - 196.10) ms	-1.6%	✅
process.time_to_main_ms	72.60 ± (72.36 - 72.83) ms	71.47 ± (71.23 - 71.70) ms	-1.6%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	16.31 ± (16.29 - 16.33) MB	16.31 ± (16.25 - 16.37) MB	+0.0%	✅⬆️
runtime.dotnet.threads.count	19 ± (19 - 19)	19 ± (19 - 19)	-0.8%	✅
.NET 6 - Bailout
process.internal_duration_ms	198.16 ± (197.68 - 198.64) ms	194.39 ± (194.03 - 194.74) ms	-1.9%	✅
process.time_to_main_ms	73.43 ± (73.20 - 73.67) ms	72.53 ± (72.34 - 72.71) ms	-1.2%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	16.37 ± (16.35 - 16.39) MB	16.44 ± (16.40 - 16.47) MB	+0.4%	✅⬆️
runtime.dotnet.threads.count	20 ± (20 - 20)	20 ± (20 - 20)	-1.0%	✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms	583.21 ± (580.53 - 585.88) ms	584.10 ± (581.65 - 586.56) ms	+0.2%	✅⬆️
process.time_to_main_ms	547.43 ± (546.29 - 548.58) ms	538.13 ± (537.21 - 539.05) ms	-1.7%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	61.06 ± (60.98 - 61.14) MB	61.06 ± (60.98 - 61.14) MB	-0.0%	✅
runtime.dotnet.threads.count	31 ± (31 - 31)	31 ± (31 - 31)	-0.0%	✅
.NET 8 - Baseline
process.internal_duration_ms	197.62 ± (197.14 - 198.10) ms	193.64 ± (193.19 - 194.09) ms	-2.0%	✅
process.time_to_main_ms	72.12 ± (71.88 - 72.36) ms	71.25 ± (70.98 - 71.52) ms	-1.2%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	11.72 ± (11.70 - 11.74) MB	11.66 ± (11.64 - 11.68) MB	-0.5%	✅
runtime.dotnet.threads.count	18 ± (18 - 18)	18 ± (18 - 18)	-0.8%	✅
.NET 8 - Bailout
process.internal_duration_ms	195.87 ± (195.24 - 196.49) ms	192.57 ± (192.05 - 193.08) ms	-1.7%	✅
process.time_to_main_ms	72.94 ± (72.71 - 73.17) ms	71.83 ± (71.63 - 72.04) ms	-1.5%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	11.81 ± (11.79 - 11.83) MB	11.74 ± (11.71 - 11.76) MB	-0.6%	✅
runtime.dotnet.threads.count	19 ± (19 - 19)	19 ± (19 - 19)	-0.5%	✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms	511.65 ± (508.87 - 514.43) ms	511.07 ± (508.58 - 513.55) ms	-0.1%	✅
process.time_to_main_ms	497.18 ± (496.13 - 498.22) ms	490.27 ± (489.50 - 491.05) ms	-1.4%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	50.70 ± (50.65 - 50.74) MB	50.61 ± (50.57 - 50.65) MB	-0.2%	✅
runtime.dotnet.threads.count	29 ± (29 - 30)	29 ± (29 - 29)	-0.8%	✅

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 (8638) - mean (74ms)  : 71, 78
    master - mean (73ms)  : 70, 77

    section Bailout
    This PR (8638) - mean (77ms)  : 74, 80
    master - mean (79ms)  : 75, 83

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (1,107ms)  : 1057, 1157
    master - mean (1,112ms)  : 1053, 1172

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 (8638) - mean (115ms)  : 110, 120
    master - mean (117ms)  : 111, 123

    section Bailout
    This PR (8638) - mean (115ms)  : 112, 119
    master - mean (116ms)  : 112, 121

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (797ms)  : 770, 823
    master - mean (794ms)  : 764, 824

FakeDbCommand (.NET 6)

gantt
    title Execution time (ms) FakeDbCommand (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8638) - mean (104ms)  : 98, 111
    master - mean (102ms)  : 97, 106

    section Bailout
    This PR (8638) - mean (103ms)  : 99, 107
    master - mean (104ms)  : 99, 110

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (947ms)  : 914, 979
    master - mean (948ms)  : 896, 1000

FakeDbCommand (.NET 8)

gantt
    title Execution time (ms) FakeDbCommand (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8638) - mean (100ms)  : 97, 103
    master - mean (99ms)  : 96, 102

    section Bailout
    This PR (8638) - mean (106ms)  : 102, 110
    master - mean (103ms)  : 98, 108

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (822ms)  : 788, 856
    master - mean (823ms)  : 786, 860

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 (8638) - mean (197ms)  : 192, 201
    master - mean (200ms)  : 195, 205

    section Bailout
    This PR (8638) - mean (200ms)  : 196, 205
    master - mean (203ms)  : 197, 210

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (1,187ms)  : 1146, 1229
    master - mean (1,199ms)  : 1157, 1242

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 (8638) - mean (283ms)  : 277, 289
    master - mean (286ms)  : 273, 300

    section Bailout
    This PR (8638) - mean (283ms)  : 276, 291
    master - mean (288ms)  : 281, 295

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (957ms)  : 928, 986
    master - mean (966ms)  : 937, 995

HttpMessageHandler (.NET 6)

gantt
    title Execution time (ms) HttpMessageHandler (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8638) - mean (276ms)  : 271, 281
    master - mean (281ms)  : 270, 291

    section Bailout
    This PR (8638) - mean (275ms)  : 271, 279
    master - mean (280ms)  : 270, 290

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (1,153ms)  : 1115, 1191
    master - mean (1,161ms)  : 1117, 1205

HttpMessageHandler (.NET 8)

gantt
    title Execution time (ms) HttpMessageHandler (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8638) - mean (275ms)  : 269, 281
    master - mean (280ms)  : 270, 290

    section Bailout
    This PR (8638) - mean (274ms)  : 268, 280
    master - mean (279ms)  : 269, 290

    section CallTarget+Inlining+NGEN
    This PR (8638) - mean (1,034ms)  : 985, 1082
    master - mean (1,042ms)  : 999, 1085

pr-commenter · 2026-05-14T17:09:11Z

Benchmarks

Benchmark execution time: 2026-05-22 11:36:33

Comparing candidate commit 910ea94 in PR branch nacho/fixFlakyTelemtryAgentTest with baseline commit 3125784 in branch master.

Some scenarios are present only in baseline or only in candidate runs. If you didn't create or remove some scenarios in your branch, this maybe a sign of crashed benchmarks 💥💥💥
Check Gitlab CI job log to find if any benchmark has crashed.

Scenarios present only in baseline:

Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled net6.0
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan net6.0
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan netcoreapp3.1
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled net472
Benchmarks.OpenTelemetry.Api.Trace.ActivityBenchmark.StartSpan net472
Benchmarks.OpenTelemetry.Api.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled net6.0

Found 6 performance improvements and 9 performance regressions! Performance is the same for 45 metrics, 12 unstable metrics, 93 known flaky benchmarks, 33 flaky benchmarks without significant changes.

Explanation

This is an A/B test comparing a candidate commit's performance against that of a baseline commit. Performance changes are noted in the tables below as:

🟩 = significantly better candidate vs. baseline
🟥 = significantly worse candidate vs. baseline

We compute a confidence interval (CI) over the relative difference of means between metrics from the candidate and baseline commits, considering the baseline as the reference.

If the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD), the change is considered significant.

Feel free to reach out to #apm-benchmarking-platform on Slack if you have any questions.

More details about the CI and significant changes

You can imagine this CI as a range of values that is likely to contain the true difference of means between the candidate and baseline commits.

CIs of the difference of means are often centered around 0%, because often changes are not that big:

---------------------------------(------|---^--------)-------------------------------->
                              -0.6%    0%  0.3%     +1.2%
                                 |          |        |
         lower bound of the CI --'          |        |
sample mean (center of the CI) -------------'        |
         upper bound of the CI ----------------------'

As described above, a change is considered significant if the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD).

For instance, for an execution time metric, this confidence interval indicates a significantly worse performance:

----------------------------------------|---------|---(---------^---------)---------->
                                       0%        1%  1.3%      2.2%      3.1%
                                                  |   |         |         |
       significant impact threshold --------------'   |         |         |
                      lower bound of CI --------------'         |         |
       sample mean (center of the CI) --------------------------'         |
                      upper bound of CI ----------------------------------'

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartActiveSpan net6.0

🟥 throughput [-132862.738op/s; -112504.256op/s] or [-47.933%; -40.589%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartRootSpan net6.0

🟥 allocated_mem [+143 bytes; +144 bytes] or [+10.108%; +10.117%]
🟥 throughput [-112279.116op/s; -95369.062op/s] or [-41.432%; -35.192%]
🟩 execution_time [-72.802ms; -55.226ms] or [-36.087%; -27.375%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartRootSpan netcoreapp3.1

🟩 execution_time [-111.721ms; -110.281ms] or [-55.801%; -55.082%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartSpan_GetCurrentSpan net6.0

🟥 allocated_mem [+143 bytes; +144 bytes] or [+10.108%; +10.117%]
🟥 throughput [-105025.965op/s; -99457.558op/s] or [-38.090%; -36.070%]
🟩 execution_time [-70.428ms; -52.618ms] or [-35.054%; -26.190%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartSpan_SetActive net6.0

🟥 throughput [-132440.571op/s; -112368.892op/s] or [-52.416%; -44.472%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartSpan_SetActive netcoreapp3.1

🟩 execution_time [-108.146ms; -106.642ms] or [-54.367%; -53.611%]

scenario:Benchmarks.Trace.HttpClientBenchmark.SendAsync net472

🟥 throughput [-5420.475op/s; -4682.301op/s] or [-6.188%; -5.345%]

scenario:Benchmarks.Trace.HttpClientBenchmark.SendAsync net6.0

🟥 throughput [-73966.672op/s; -66424.732op/s] or [-50.247%; -45.123%]
🟩 execution_time [-32.223ms; -16.230ms] or [-15.990%; -8.054%]

scenario:Benchmarks.Trace.NLogBenchmark.EnrichedLog net6.0

🟥 throughput [-55045.664op/s; -39738.543op/s] or [-27.600%; -19.925%]
🟩 execution_time [-74.475ms; -56.055ms] or [-37.664%; -28.349%]

Known flaky benchmarks

These benchmarks are marked as flaky and will not trigger a failure. Modify FLAKY_BENCHMARKS_REGEX to control which benchmarks are marked as flaky.

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan net6.0

unstable execution_time [-57.498ms; -36.591ms] or [-28.671%; -18.246%]
🟥 throughput [-144743.393op/s; -124028.289op/s] or [-48.830%; -41.842%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan netcoreapp3.1

unstable execution_time [-98.955ms; -74.058ms] or [-49.758%; -37.238%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled net6.0

🟩 execution_time [-70.675ms; -53.655ms] or [-35.157%; -26.691%]
🟥 throughput [-112992.270op/s; -97642.790op/s] or [-43.488%; -37.581%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled netcoreapp3.1

unstable execution_time [-99.340ms; -74.323ms] or [-49.701%; -37.185%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled net6.0

🟩 execution_time [-77.130ms; -74.615ms] or [-38.284%; -37.036%]
🟥 throughput [-100275.584op/s; -97391.735op/s] or [-35.089%; -34.080%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled netcoreapp3.1

unstable execution_time [-99.915ms; -75.229ms] or [-49.961%; -37.617%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled net6.0

🟩 execution_time [-63.446ms; -48.741ms] or [-31.719%; -24.368%]
🟥 throughput [-99860.803op/s; -88538.802op/s] or [-43.314%; -38.403%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled netcoreapp3.1

unstable execution_time [-96.727ms; -72.050ms] or [-48.628%; -36.222%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled net6.0

🟩 execution_time [-77.426ms; -75.377ms] or [-38.742%; -37.716%]
🟥 throughput [-105458.698op/s; -100587.726op/s] or [-35.579%; -33.935%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled netcoreapp3.1

🟩 execution_time [-111.708ms; -110.424ms] or [-55.789%; -55.148%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled net6.0

🟩 execution_time [-67.941ms; -58.351ms] or [-33.798%; -29.028%]
🟥 throughput [-136090.092op/s; -120613.277op/s] or [-45.321%; -40.167%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled netcoreapp3.1

unstable execution_time [-99.089ms; -74.198ms] or [-49.675%; -37.196%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan net472

🟥 throughput [-12390.476op/s; -11524.735op/s] or [-6.410%; -5.962%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan net6.0

unstable execution_time [-60.776ms; -38.292ms] or [-30.110%; -18.971%]
🟥 throughput [-109378.525op/s; -91457.496op/s] or [-40.168%; -33.587%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan netcoreapp3.1

unstable execution_time [-100.366ms; -76.269ms] or [-49.893%; -37.914%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled net6.0

unstable execution_time [-58.497ms; -35.900ms] or [-29.249%; -17.950%]
🟥 throughput [-112053.513op/s; -98141.047op/s] or [-44.866%; -39.295%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled netcoreapp3.1

🟩 execution_time [-112.679ms; -110.824ms] or [-56.222%; -55.296%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled net6.0

unstable execution_time [-59.370ms; -24.459ms] or [-29.602%; -12.195%]
🟥 throughput [-116761.981op/s; -94966.611op/s] or [-43.753%; -35.586%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled netcoreapp3.1

🟩 execution_time [-112.542ms; -110.402ms] or [-56.371%; -55.299%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled net6.0

unstable execution_time [-95.798ms; -72.193ms] or [-47.835%; -36.048%]
unstable throughput [-50107.338op/s; -32613.774op/s] or [-28.926%; -18.827%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled netcoreapp3.1

unstable execution_time [-100.864ms; -76.311ms] or [-50.291%; -38.049%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled net6.0

🟥 allocated_mem [+143 bytes; +144 bytes] or [+7.434%; +7.442%]
🟩 execution_time [-54.111ms; -41.897ms] or [-27.108%; -20.989%]
🟥 throughput [-104440.975op/s; -96165.260op/s] or [-47.396%; -43.641%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled netcoreapp3.1

unstable execution_time [-98.569ms; -74.935ms] or [-49.106%; -37.332%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled net6.0

unstable execution_time [-54.561ms; -34.531ms] or [-27.323%; -17.292%]
🟥 throughput [-137559.280op/s; -121040.160op/s] or [-52.111%; -45.853%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled netcoreapp3.1

🟩 execution_time [-114.499ms; -112.695ms] or [-56.704%; -55.810%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled net6.0

unstable execution_time [-43.228ms; -19.838ms] or [-21.527%; -9.879%]
🟥 throughput [-126694.901op/s; -109827.825op/s] or [-44.467%; -38.547%]

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled netcoreapp3.1

unstable execution_time [-101.701ms; -77.081ms] or [-50.725%; -38.445%]

scenario:Benchmarks.Trace.ActivityBenchmark.StartStopWithChild net472

🟥 throughput [-9966.453op/s; -9241.253op/s] or [-11.817%; -10.957%]

scenario:Benchmarks.Trace.ActivityBenchmark.StartStopWithChild net6.0

unstable execution_time [-76.311ms; -55.732ms] or [-38.072%; -27.805%]
unstable throughput [-40828.862op/s; -28451.886op/s] or [-34.318%; -23.915%]

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

unstable execution_time [-53.371ms; -23.564ms] or [-26.844%; -11.852%]
🟥 throughput [-6661.779op/s; -4922.543op/s] or [-6.774%; -5.005%]

scenario:Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces net472

🟥 execution_time [+317.477ms; +333.776ms] or [+157.543%; +165.632%]
🟥 throughput [-57.293op/s; -44.609op/s] or [-10.308%; -8.026%]

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

🟥 execution_time [+98.002ms; +100.798ms] or [+77.427%; +79.637%]
🟩 throughput [+86.732op/s; +96.436op/s] or [+11.435%; +12.715%]

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

🟥 execution_time [+83.960ms; +85.365ms] or [+74.301%; +75.545%]

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

🟥 allocated_mem [+1.308KB; +1.308KB] or [+27.528%; +27.540%]

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

🟥 allocated_mem [+439 bytes; +440 bytes] or [+9.299%; +9.310%]
unstable execution_time [-61.937ms; -40.035ms] or [-28.927%; -18.698%]
unstable throughput [-23199.832op/s; -8651.344op/s] or [-16.935%; -6.315%]

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

🟥 allocated_mem [+1.272KB; +1.272KB] or [+27.500%; +27.510%]

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

🟥 allocated_mem [+1.307KB; +1.307KB] or [+105.743%; +105.758%]
🟥 throughput [-271739.905op/s; -267212.782op/s] or [-27.746%; -27.284%]

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

🟥 allocated_mem [+439 bytes; +440 bytes] or [+35.945%; +35.954%]
unstable execution_time [-73.549ms; -47.921ms] or [-32.800%; -21.371%]
unstable throughput [-340898.491op/s; -223396.301op/s] or [-36.419%; -23.866%]

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

🟥 allocated_mem [+1.272KB; +1.272KB] or [+105.288%; +105.304%]
🟩 execution_time [-89.593ms; -85.071ms] or [-44.721%; -42.464%]
🟥 throughput [-132156.749op/s; -115910.606op/s] or [-18.988%; -16.654%]

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

🟥 throughput [-48890.109op/s; -45023.005op/s] or [-31.108%; -28.647%]

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

🟩 execution_time [-62.447ms; -46.380ms] or [-31.838%; -23.646%]
🟩 throughput [+9626.282op/s; +12342.333op/s] or [+7.669%; +9.832%]

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

unstable execution_time [-41.078ms; -20.455ms] or [-20.310%; -10.113%]
unstable throughput [-601748.951op/s; -254845.722op/s] or [-20.065%; -8.498%]

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

unstable execution_time [-83.470ms; -58.246ms] or [-38.476%; -26.849%]
🟩 throughput [+162721.466op/s; +216931.202op/s] or [+6.459%; +8.611%]

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeArgs net472

🟥 execution_time [+301.489ms; +315.358ms] or [+150.644%; +157.574%]

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeArgs net6.0

unstable execution_time [+151.998ms; +189.243ms] or [+76.653%; +95.436%]

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

unstable execution_time [+251.503ms; +290.326ms] or [+126.688%; +146.244%]

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeLegacyArgs net472

🟥 execution_time [+297.596ms; +311.118ms] or [+146.167%; +152.809%]

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeLegacyArgs net6.0

🟥 execution_time [+235.339ms; +243.662ms] or [+115.048%; +119.117%]

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

🟥 execution_time [+263.745ms; +279.227ms] or [+131.819%; +139.558%]

scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack net6.0

🟥 execution_time [+22.615µs; +46.330µs] or [+7.220%; +14.791%]
🟥 throughput [-430.971op/s; -231.481op/s] or [-13.435%; -7.216%]

scenario:Benchmarks.Trace.AspNetCoreBenchmark.SendRequest net472

🟥 execution_time [+300.411ms; +301.485ms] or [+149.936%; +150.472%]

scenario:Benchmarks.Trace.AspNetCoreBenchmark.SendRequest net6.0

unstable execution_time [+365.759ms; +377.762ms] or [+397.412%; +410.454%]
🟥 throughput [-6862.616op/s; -6704.320op/s] or [-56.391%; -55.090%]

scenario:Benchmarks.Trace.AspNetCoreBenchmark.SendRequest netcoreapp3.1

unstable execution_time [+289.698ms; +341.018ms] or [+219.965%; +258.932%]
🟥 throughput [-1270.351op/s; -1052.744op/s] or [-12.298%; -10.191%]

scenario:Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces net472

🟥 execution_time [+302.548ms; +317.081ms] or [+139.109%; +145.791%]
🟥 throughput [-686.277op/s; -669.546op/s] or [-62.183%; -60.667%]

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

unstable execution_time [-50.295ms; +83.635ms] or [-21.434%; +35.642%]
🟥 throughput [-710.781op/s; -618.341op/s] or [-47.409%; -41.244%]

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

🟥 allocated_mem [+2.305KB; +2.308KB] or [+5.442%; +5.450%]
🟥 execution_time [+337.659ms; +346.276ms] or [+201.959%; +207.113%]
🟥 throughput [-723.861op/s; -689.782op/s] or [-50.401%; -48.029%]

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

🟩 execution_time [-197.260µs; -184.526µs] or [-9.992%; -9.347%]
🟩 throughput [+52.333op/s; +56.296op/s] or [+10.331%; +11.113%]

scenario:Benchmarks.Trace.CharSliceBenchmark.OriginalCharSlice netcoreapp3.1

🟩 execution_time [-233.591µs; -219.449µs] or [-5.924%; -5.565%]
🟩 throughput [+14.960op/s; +15.973op/s] or [+5.899%; +6.299%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch net472

🟥 execution_time [+304.822ms; +316.556ms] or [+153.503%; +159.411%]

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

🟥 execution_time [+268.172ms; +283.110ms] or [+134.381%; +141.867%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch netcoreapp3.1

🟥 execution_time [+299.939ms; +306.976ms] or [+150.677%; +154.212%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearchAsync net472

🟥 execution_time [+304.620ms; +317.352ms] or [+152.970%; +159.364%]

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

unstable execution_time [+218.382ms; +239.555ms] or [+107.980%; +118.449%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearchAsync netcoreapp3.1

🟥 execution_time [+303.142ms; +310.162ms] or [+153.646%; +157.204%]

scenario:Benchmarks.Trace.GraphQLBenchmark.ExecuteAsync net472

🟥 execution_time [+303.305ms; +317.571ms] or [+152.232%; +159.392%]

scenario:Benchmarks.Trace.GraphQLBenchmark.ExecuteAsync net6.0

unstable execution_time [+212.814ms; +281.005ms] or [+106.068%; +140.055%]
🟩 throughput [+36039.377op/s; +47833.411op/s] or [+7.156%; +9.498%]

scenario:Benchmarks.Trace.GraphQLBenchmark.ExecuteAsync netcoreapp3.1

🟥 execution_time [+302.732ms; +309.554ms] or [+150.607%; +154.000%]

scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog net6.0

🟥 throughput [-205787.295op/s; -189780.695op/s] or [-56.453%; -52.062%]

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

unstable execution_time [-72.265ms; -44.268ms] or [-36.249%; -22.205%]

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

🟩 allocated_mem [-24.535KB; -24.512KB] or [-8.950%; -8.941%]
unstable execution_time [-66.478µs; -11.740µs] or [-13.139%; -2.320%]

scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark netcoreapp3.1

🟩 execution_time [-88.225µs; -32.576µs] or [-15.289%; -5.645%]
🟩 throughput [+117.820op/s; +269.344op/s] or [+6.731%; +15.388%]

scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark net472

🟥 allocated_mem [+8.190KB; +8.196KB] or [+16.663%; +16.675%]

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

unstable execution_time [+4.019µs; +9.796µs] or [+9.500%; +23.154%]
🟥 throughput [-4085.601op/s; -1944.672op/s] or [-17.199%; -8.186%]

scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark netcoreapp3.1

unstable execution_time [-11.588µs; -0.966µs] or [-17.979%; -1.499%]
unstable throughput [+591.076op/s; +2659.295op/s] or [+3.626%; +16.316%]

scenario:Benchmarks.Trace.Log4netBenchmark.EnrichedLog net472

🟥 execution_time [+303.608ms; +317.397ms] or [+153.461%; +160.430%]

scenario:Benchmarks.Trace.Log4netBenchmark.EnrichedLog net6.0

🟥 execution_time [+303.712ms; +310.945ms] or [+154.588%; +158.270%]

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

🟥 execution_time [+301.867ms; +307.209ms] or [+151.122%; +153.796%]

scenario:Benchmarks.Trace.RedisBenchmark.SendReceive net6.0

unstable execution_time [-61.567ms; -31.941ms] or [-30.774%; -15.965%]
unstable throughput [-206566.288op/s; -128981.882op/s] or [-39.099%; -24.414%]

scenario:Benchmarks.Trace.RedisBenchmark.SendReceive netcoreapp3.1

unstable execution_time [-53.785ms; -23.645ms] or [-27.263%; -11.985%]

scenario:Benchmarks.Trace.SerilogBenchmark.EnrichedLog net472

🟥 execution_time [+301.464ms; +315.442ms] or [+150.252%; +157.219%]

scenario:Benchmarks.Trace.SerilogBenchmark.EnrichedLog net6.0

unstable execution_time [+266.128ms; +296.684ms] or [+133.637%; +148.981%]

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

🟥 execution_time [+307.501ms; +313.355ms] or [+155.945%; +158.914%]

scenario:Benchmarks.Trace.SingleSpanAspNetCoreBenchmark.SingleSpanAspNetCore net472

🟥 execution_time [+300.668ms; +301.375ms] or [+149.975%; +150.327%]
🟩 throughput [+59772970.645op/s; +60043745.654op/s] or [+43.530%; +43.728%]

scenario:Benchmarks.Trace.SingleSpanAspNetCoreBenchmark.SingleSpanAspNetCore net6.0

unstable execution_time [+375.905ms; +388.333ms] or [+467.504%; +482.961%]
🟥 throughput [-7367.577op/s; -7160.630op/s] or [-56.955%; -55.355%]

scenario:Benchmarks.Trace.SingleSpanAspNetCoreBenchmark.SingleSpanAspNetCore netcoreapp3.1

🟥 execution_time [+301.271ms; +303.665ms] or [+150.267%; +151.461%]
🟥 throughput [-30360184.414op/s; -29053990.117op/s] or [-13.448%; -12.869%]

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

🟩 execution_time [-102.536ms; -101.085ms] or [-50.221%; -49.510%]
🟩 throughput [+78023.191op/s; +90928.637op/s] or [+7.285%; +8.490%]

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

unstable execution_time [-87.097ms; -65.055ms] or [-44.071%; -32.918%]

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

unstable execution_time [-65.631ms; -41.022ms] or [-34.194%; -21.373%]
unstable throughput [-242907.145op/s; -65266.739op/s] or [-18.801%; -5.052%]

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

unstable execution_time [-92.094ms; -69.890ms] or [-45.247%; -34.338%]
🟩 throughput [+72528.473op/s; +80476.737op/s] or [+7.203%; +7.993%]

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

unstable execution_time [-71.029ms; -42.889ms] or [-35.472%; -21.419%]
unstable throughput [-43617.277op/s; +23610.751op/s] or [-7.920%; +4.287%]

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

unstable execution_time [-70.135ms; -43.362ms] or [-35.238%; -21.787%]

scenario:Benchmarks.Trace.TraceAnnotationsBenchmark.RunOnMethodBegin net6.0

unstable execution_time [-81.614ms; -52.476ms] or [-40.821%; -26.247%]
unstable throughput [-94082.422op/s; +25197.754op/s] or [-10.511%; +2.815%]

scenario:Benchmarks.Trace.TraceAnnotationsBenchmark.RunOnMethodBegin netcoreapp3.1

unstable execution_time [-33.316ms; -9.777ms] or [-16.921%; -4.966%]

Known flaky benchmarks without significant changes:

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled net472
scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled net472
scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.ObjectExtractorMoreComplexBody net472
scenario:Benchmarks.Trace.Asm.AppSecBodyBenchmark.ObjectExtractorSimpleBody net472
scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark net472
scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark net6.0
scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark netcoreapp3.1
scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack net472
scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack netcoreapp3.1
scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice net472
scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice net6.0
scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice netcoreapp3.1
scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool net472
scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool net6.0
scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool netcoreapp3.1
scenario:Benchmarks.Trace.CharSliceBenchmark.OriginalCharSlice net472
scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog net472
scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark net472
scenario:Benchmarks.Trace.RedisBenchmark.SendReceive net472
scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope net472
scenario:Benchmarks.Trace.SpanBenchmark.StartFinishSpan net472
scenario:Benchmarks.Trace.SpanBenchmark.StartFinishTwoScopes net472
scenario:Benchmarks.Trace.TraceAnnotationsBenchmark.RunOnMethodBegin net472

datadog-datadog-prod-us1 · 2026-05-22T09:18:29Z

✨ Fix all issues with BitsAI

⚠️ Warnings

🚦 1 Pipeline job failed

DataDog/apm-reliability/dd-trace-dotnet | check-big-regressions

🔧 Fix in code (Fix with Cursor).
Execution of Regression Check failed with exit code 5.

Useful? React with 👍 / 👎

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

🔗 Commit SHA: 910ea94 | Docs | Datadog PR Page | Give us feedback!}

andrewlock

Thanks, I think we only need it on RuntimeIdTests though. And I'd rather we instead re-wrote RuntimeId to not be inherently flaky 😭

Co-authored-by: Andrew Lock <[email protected]>

…erTests.cs Co-authored-by: Andrew Lock <[email protected]>

NachoEchevarria · 2026-05-22T10:45:41Z

Thanks, I think we only need it on RuntimeIdTests though. And I'd rather we instead re-wrote RuntimeId to not be inherently flaky 😭

Sure! I will take it as a pending task that could be addressed in a subsequent PR.

zacharycmontoya

Thanks!

Fix

8c6b151

NachoEchevarria changed the title ~~Fix~~ fix(tests): serialize RuntimeIdTests and HttpHeaderHelperTests to remove telemetry header flake May 14, 2026

github-actions Bot added the area:tests unit tests, integration tests label May 14, 2026

NachoEchevarria changed the title ~~fix(tests): serialize RuntimeIdTests and HttpHeaderHelperTests to remove telemetry header flake~~ Serialize RuntimeIdTests and HttpHeaderHelperTests to remove telemetry header flake May 18, 2026

NachoEchevarria marked this pull request as ready for review May 22, 2026 08:51

NachoEchevarria requested a review from a team as a code owner May 22, 2026 08:51

andrewlock approved these changes May 22, 2026

View reviewed changes

Comment thread tracer/test/Datadog.Trace.Tests/Util/RuntimeIdTests.cs Outdated

Comment thread tracer/test/Datadog.Trace.Tests/HttpOverStreams/HttpHeaderHelperTests.cs Outdated

NachoEchevarria and others added 2 commits May 22, 2026 12:40

Update tracer/test/Datadog.Trace.Tests/Util/RuntimeIdTests.cs

8447009

Co-authored-by: Andrew Lock <[email protected]>

Update tracer/test/Datadog.Trace.Tests/HttpOverStreams/HttpHeaderHelp…

910ea94

…erTests.cs Co-authored-by: Andrew Lock <[email protected]>

zacharycmontoya approved these changes May 27, 2026

View reviewed changes

NachoEchevarria merged commit fcebc68 into master May 29, 2026
136 of 138 checks passed

NachoEchevarria deleted the nacho/fixFlakyTelemtryAgentTest branch May 29, 2026 14:57

github-actions Bot added this to the vNext-v3 milestone May 29, 2026

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NachoEchevarria commented May 14, 2026 • edited by andrewlock 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

Other details

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dd-trace-dotnet-ci-bot Bot commented May 14, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Execution-Time Benchmarks Report ⏱️

FakeDbCommand

HttpMessageHandler

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pr-commenter Bot commented May 14, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Benchmarks

Explanation

More details about the CI and significant changes

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartActiveSpan net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartRootSpan net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartRootSpan netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartSpan_GetCurrentSpan net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartSpan_SetActive net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TracerBenchmark.StartSpan_SetActive netcoreapp3.1

scenario:Benchmarks.Trace.HttpClientBenchmark.SendAsync net472

scenario:Benchmarks.Trace.HttpClientBenchmark.SendAsync net6.0

scenario:Benchmarks.Trace.NLogBenchmark.EnrichedLog net6.0

Known flaky benchmarks

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_AddEvent_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_GetContext_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetAttributes_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_SetStatus_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan_UpdateName_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan net472

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_AddEvent_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_GetContext_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_RecordException_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetAttributes_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_SetStatus_Sampled netcoreapp3.1

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled net6.0

scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.TelemetrySpanBenchmark.StartSpan_UpdateName_Sampled netcoreapp3.1

scenario:Benchmarks.Trace.ActivityBenchmark.StartStopWithChild net472

scenario:Benchmarks.Trace.ActivityBenchmark.StartStopWithChild net6.0

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

scenario:Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces net472

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

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

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

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

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

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.ObjectExtractorMoreComplexBody netcoreapp3.1

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

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

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeArgs net472

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeArgs net6.0

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

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeLegacyArgs net472

scenario:Benchmarks.Trace.Asm.AppSecEncoderBenchmark.EncodeLegacyArgs net6.0

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

NachoEchevarria commented May 14, 2026 •

edited by andrewlock

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datadog-datadog-prod-us1 Bot commented May 22, 2026 •

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