Fix excessive allocation in vendored `SharedArrayPool` by andrewlock · Pull Request #8442 · DataDog/dd-trace-dotnet

andrewlock · 2026-04-13T08:02:55Z

Summary of changes

Fixes a critical allocation regression in vendored ArrayPool implementation

Reason for change

When vendored, the SharedArrayPool introduced a large allocation, by calling Process.GetCurrentProcess() every time an array is rented or returned. This causes significant allocation (potentially even more than not using the pool would) on applicable TFMs (i.e. .NET Framework and <.NET Core 3.1).

This was obviously introduced during vendoring due to the lack of the Thread.GetCurrentProcessorId() method in .NET Framework, but unfortunately the chosen replacement is likely worse for performance than just using a constant 😢

int index = (int)((uint)Process.GetCurrentProcess().Id % (uint)SharedArrayPoolStatics.s_partitionCount); // mod by constant in tier 1
// todo: fix int index = (int)((uint)Thread.GetCurrentProcessorId() % (uint)SharedArrayPoolStatics.s_partitionCount); // mod by constant in tier 1

Implementation details

The immediate fix is instead of calling Process.GetCurrentProcess(), use Environment.CurrentManagedThreadId to try to get some kind of "round robin" behaviour.

The longer-term fix is likely to update the vendor implementation to use the .NET Framework-appropriate versions instead of trying to backport .NET 7 to .NET Framework

Test coverage

I discovered this when benchmarking something else, where it showed up as a stark difference in .NET Framework, which was the only TFM using the vendored array

Method	Runtime	Mean	Allocated
BuildKey_ClientSpanWithPeerTags	.NET 10.0	852.78 ns	688 B
BuildKey_ClientSpanWithPeerTags	.NET 6.0	1,144.97 ns	688 B
BuildKey_ClientSpanWithPeerTags	.NET Core 3.1	1,666.94 ns	688 B
BuildKey_ClientSpanWithPeerTags	.NET Framework 4.8	4,002.83 ns	2391 B

Other details

Should be fixed at source as part of https://datadoghq.atlassian.net/browse/APMLP-1207

tonyredondo

Thanks for this!

dd-trace-dotnet-ci-bot · 2026-04-13T08:45:36Z

Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing This PR (8442) 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	71.39 ± (71.35 - 71.69) ms	71.47 ± (71.51 - 71.93) ms	+0.1%	✅⬆️
.NET Framework 4.8 - Bailout
duration	75.97 ± (75.92 - 76.25) ms	75.59 ± (75.39 - 75.77) ms	-0.5%	✅
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration	1062.42 ± (1063.05 - 1069.02) ms	1059.77 ± (1063.78 - 1070.71) ms	-0.2%	✅
.NET Core 3.1 - Baseline
process.internal_duration_ms	22.14 ± (22.10 - 22.18) ms	22.12 ± (22.10 - 22.15) ms	-0.1%	✅
process.time_to_main_ms	82.69 ± (82.50 - 82.87) ms	82.50 ± (82.32 - 82.68) ms	-0.2%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.92 ± (10.91 - 10.92) MB	10.90 ± (10.90 - 10.91) MB	-0.1%	✅
runtime.dotnet.threads.count	12 ± (12 - 12)	12 ± (12 - 12)	+0.0%	✅
.NET Core 3.1 - Bailout
process.internal_duration_ms	22.13 ± (22.10 - 22.17) ms	22.07 ± (22.04 - 22.10) ms	-0.3%	✅
process.time_to_main_ms	84.10 ± (83.88 - 84.31) ms	83.95 ± (83.77 - 84.14) ms	-0.2%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.96 ± (10.95 - 10.96) MB	10.93 ± (10.92 - 10.93) MB	-0.2%	✅
runtime.dotnet.threads.count	13 ± (13 - 13)	13 ± (13 - 13)	+0.0%	✅
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms	225.34 ± (224.22 - 226.47) ms	224.82 ± (223.67 - 225.98) ms	-0.2%	✅
process.time_to_main_ms	518.49 ± (517.34 - 519.63) ms	520.38 ± (519.14 - 521.63) ms	+0.4%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	48.46 ± (48.43 - 48.49) MB	48.42 ± (48.39 - 48.45) MB	-0.1%	✅
runtime.dotnet.threads.count	28 ± (28 - 28)	28 ± (28 - 28)	+0.0%	✅
.NET 6 - Baseline
process.internal_duration_ms	20.99 ± (20.96 - 21.03) ms	20.96 ± (20.93 - 20.99) ms	-0.2%	✅
process.time_to_main_ms	72.20 ± (72.02 - 72.37) ms	71.97 ± (71.78 - 72.16) ms	-0.3%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.63 ± (10.63 - 10.63) MB	10.64 ± (10.64 - 10.64) MB	+0.1%	✅⬆️
runtime.dotnet.threads.count	10 ± (10 - 10)	10 ± (10 - 10)	+0.0%	✅
.NET 6 - Bailout
process.internal_duration_ms	20.81 ± (20.79 - 20.84) ms	20.96 ± (20.93 - 21.00) ms	+0.7%	✅⬆️
process.time_to_main_ms	72.29 ± (72.12 - 72.45) ms	73.41 ± (73.22 - 73.60) ms	+1.6%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	10.72 ± (10.72 - 10.73) MB	10.75 ± (10.74 - 10.75) MB	+0.2%	✅⬆️
runtime.dotnet.threads.count	11 ± (11 - 11)	11 ± (11 - 11)	+0.0%	✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms	384.26 ± (382.35 - 386.17) ms	385.73 ± (383.37 - 388.08) ms	+0.4%	✅⬆️
process.time_to_main_ms	519.43 ± (518.52 - 520.33) ms	518.24 ± (517.34 - 519.14) ms	-0.2%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	49.91 ± (49.88 - 49.94) MB	49.85 ± (49.82 - 49.88) MB	-0.1%	✅
runtime.dotnet.threads.count	28 ± (28 - 28)	28 ± (28 - 28)	-0.0%	✅
.NET 8 - Baseline
process.internal_duration_ms	19.17 ± (19.14 - 19.20) ms	19.17 ± (19.14 - 19.20) ms	+0.0%	✅⬆️
process.time_to_main_ms	71.18 ± (71.04 - 71.32) ms	71.03 ± (70.87 - 71.19) ms	-0.2%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	7.71 ± (7.70 - 7.71) MB	7.66 ± (7.66 - 7.67) MB	-0.5%	✅
runtime.dotnet.threads.count	10 ± (10 - 10)	10 ± (10 - 10)	+0.0%	✅
.NET 8 - Bailout
process.internal_duration_ms	19.01 ± (18.98 - 19.05) ms	19.11 ± (19.07 - 19.15) ms	+0.5%	✅⬆️
process.time_to_main_ms	71.92 ± (71.77 - 72.07) ms	71.90 ± (71.75 - 72.04) ms	-0.0%	✅
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	7.74 ± (7.74 - 7.75) MB	7.73 ± (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	305.31 ± (303.20 - 307.41) ms	304.34 ± (302.14 - 306.55) ms	-0.3%	✅
process.time_to_main_ms	476.74 ± (475.90 - 477.57) ms	477.48 ± (476.74 - 478.21) ms	+0.2%	✅⬆️
runtime.dotnet.exceptions.count	0 ± (0 - 0)	0 ± (0 - 0)	+0.0%	✅
runtime.dotnet.mem.committed	37.08 ± (37.06 - 37.10) MB	37.01 ± (36.99 - 37.04) MB	-0.2%	✅
runtime.dotnet.threads.count	27 ± (27 - 27)	27 ± (27 - 27)	+0.1%	✅⬆️

HttpMessageHandler

Metric	Master (Mean ± 95% CI)	Current (Mean ± 95% CI)	Change	Status
.NET Framework 4.8 - Baseline
duration	190.88 ± (190.80 - 191.52) ms	190.66 ± (190.75 - 191.39) ms	-0.1%	✅
.NET Framework 4.8 - Bailout
duration	194.55 ± (194.52 - 194.87) ms	194.70 ± (194.45 - 194.87) ms	+0.1%	✅⬆️
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration	1136.55 ± (1137.88 - 1143.80) ms	1141.13 ± (1141.69 - 1147.46) ms	+0.4%	✅⬆️
.NET Core 3.1 - Baseline
process.internal_duration_ms	185.18 ± (184.88 - 185.48) ms	185.92 ± (185.60 - 186.24) ms	+0.4%	✅⬆️
process.time_to_main_ms	79.73 ± (79.57 - 79.88) ms	80.39 ± (80.19 - 80.60) ms	+0.8%	✅⬆️
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	16.13 ± (16.10 - 16.15) MB	16.19 ± (16.16 - 16.22) MB	+0.4%	✅⬆️
runtime.dotnet.threads.count	20 ± (19 - 20)	20 ± (20 - 20)	+0.9%	✅⬆️
.NET Core 3.1 - Bailout
process.internal_duration_ms	184.85 ± (184.65 - 185.04) ms	185.31 ± (185.07 - 185.56) ms	+0.3%	✅⬆️
process.time_to_main_ms	81.05 ± (80.95 - 81.15) ms	81.32 ± (81.21 - 81.42) ms	+0.3%	✅⬆️
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	16.15 ± (16.10 - 16.20) MB	16.23 ± (16.18 - 16.28) MB	+0.5%	✅⬆️
runtime.dotnet.threads.count	21 ± (20 - 21)	21 ± (20 - 21)	+0.0%	✅⬆️
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms	391.78 ± (390.52 - 393.03) ms	394.90 ± (393.54 - 396.25) ms	+0.8%	✅⬆️
process.time_to_main_ms	505.19 ± (504.19 - 506.20) ms	507.94 ± (506.72 - 509.16) ms	+0.5%	✅⬆️
runtime.dotnet.exceptions.count	3 ± (3 - 3)	3 ± (3 - 3)	+0.0%	✅
runtime.dotnet.mem.committed	58.71 ± (58.50 - 58.91) MB	58.82 ± (58.64 - 59.01) MB	+0.2%	✅⬆️
runtime.dotnet.threads.count	30 ± (30 - 30)	30 ± (29 - 30)	-0.2%	✅
.NET 6 - Baseline
process.internal_duration_ms	190.44 ± (190.13 - 190.75) ms	190.24 ± (190.00 - 190.47) ms	-0.1%	✅
process.time_to_main_ms	69.75 ± (69.60 - 69.91) ms	69.58 ± (69.46 - 69.71) ms	-0.2%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	15.93 ± (15.76 - 16.11) MB	16.29 ± (16.18 - 16.40) MB	+2.2%	✅⬆️
runtime.dotnet.threads.count	18 ± (18 - 18)	18 ± (18 - 18)	+1.8%	✅⬆️
.NET 6 - Bailout
process.internal_duration_ms	189.27 ± (189.05 - 189.49) ms	189.49 ± (189.27 - 189.71) ms	+0.1%	✅⬆️
process.time_to_main_ms	70.60 ± (70.53 - 70.67) ms	70.53 ± (70.45 - 70.60) ms	-0.1%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	15.92 ± (15.75 - 16.09) MB	16.17 ± (16.01 - 16.33) MB	+1.6%	✅⬆️
runtime.dotnet.threads.count	19 ± (19 - 19)	19 ± (19 - 19)	+1.2%	✅⬆️
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms	598.10 ± (595.54 - 600.66) ms	598.32 ± (595.75 - 600.89) ms	+0.0%	✅⬆️
process.time_to_main_ms	508.25 ± (507.47 - 509.02) ms	508.61 ± (507.80 - 509.41) ms	+0.1%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	61.49 ± (61.39 - 61.59) MB	61.57 ± (61.47 - 61.67) MB	+0.1%	✅⬆️
runtime.dotnet.threads.count	30 ± (30 - 30)	30 ± (30 - 30)	+0.0%	✅⬆️
.NET 8 - Baseline
process.internal_duration_ms	187.58 ± (187.30 - 187.86) ms	187.92 ± (187.64 - 188.21) ms	+0.2%	✅⬆️
process.time_to_main_ms	69.00 ± (68.86 - 69.13) ms	69.23 ± (69.10 - 69.35) ms	+0.3%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	11.77 ± (11.75 - 11.80) MB	11.85 ± (11.81 - 11.89) MB	+0.6%	✅⬆️
runtime.dotnet.threads.count	18 ± (18 - 18)	18 ± (18 - 18)	-0.0%	✅
.NET 8 - Bailout
process.internal_duration_ms	186.96 ± (186.71 - 187.20) ms	187.26 ± (187.00 - 187.51) ms	+0.2%	✅⬆️
process.time_to_main_ms	70.09 ± (70.01 - 70.17) ms	70.14 ± (70.06 - 70.22) ms	+0.1%	✅⬆️
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	11.60 ± (11.49 - 11.72) MB	11.70 ± (11.60 - 11.80) MB	+0.8%	✅⬆️
runtime.dotnet.threads.count	18 ± (18 - 19)	19 ± (18 - 19)	+0.9%	✅⬆️
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms	516.44 ± (513.77 - 519.11) ms	519.11 ± (516.86 - 521.36) ms	+0.5%	✅⬆️
process.time_to_main_ms	468.89 ± (468.23 - 469.55) ms	467.64 ± (467.02 - 468.25) ms	-0.3%	✅
runtime.dotnet.exceptions.count	4 ± (4 - 4)	4 ± (4 - 4)	+0.0%	✅
runtime.dotnet.mem.committed	50.68 ± (50.65 - 50.71) MB	50.68 ± (50.66 - 50.71) MB	+0.0%	✅⬆️
runtime.dotnet.threads.count	30 ± (30 - 30)	30 ± (30 - 30)	-0.1%	✅

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 (8442) - mean (72ms)  : 68, 75
    master - mean (72ms)  : 69, 74

    section Bailout
    This PR (8442) - mean (76ms)  : 74, 77
    master - mean (76ms)  : 75, 78

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (1,067ms)  : 1016, 1118
    master - mean (1,066ms)  : 1023, 1110

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 (8442) - mean (111ms)  : 107, 115
    master - mean (111ms)  : 108, 115

    section Bailout
    This PR (8442) - mean (112ms)  : 110, 115
    master - mean (113ms)  : 110, 116

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (784ms)  : 759, 809
    master - mean (783ms)  : 763, 803

FakeDbCommand (.NET 6)

gantt
    title Execution time (ms) FakeDbCommand (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8442) - mean (99ms)  : 95, 103
    master - mean (99ms)  : 95, 103

    section Bailout
    This PR (8442) - mean (100ms)  : 96, 105
    master - mean (99ms)  : 97, 102

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (933ms)  : 891, 974
    master - mean (931ms)  : 903, 960

FakeDbCommand (.NET 8)

gantt
    title Execution time (ms) FakeDbCommand (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8442) - mean (98ms)  : 94, 101
    master - mean (98ms)  : 95, 101

    section Bailout
    This PR (8442) - mean (98ms)  : 96, 100
    master - mean (98ms)  : 96, 100

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (814ms)  : 776, 852
    master - mean (811ms)  : 778, 844

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 (8442) - mean (191ms)  : 188, 194
    master - mean (191ms)  : 188, 195

    section Bailout
    This PR (8442) - mean (195ms)  : 193, 197
    master - mean (195ms)  : 193, 196

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (1,145ms)  : 1102, 1187
    master - mean (1,141ms)  : 1097, 1185

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 (8442) - mean (275ms)  : 270, 279
    master - mean (273ms)  : 269, 277

    section Bailout
    This PR (8442) - mean (275ms)  : 272, 278
    master - mean (274ms)  : 271, 277

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (930ms)  : 902, 958
    master - mean (925ms)  : 905, 944

HttpMessageHandler (.NET 6)

gantt
    title Execution time (ms) HttpMessageHandler (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8442) - mean (268ms)  : 264, 272
    master - mean (268ms)  : 265, 272

    section Bailout
    This PR (8442) - mean (268ms)  : 265, 271
    master - mean (268ms)  : 265, 270

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (1,138ms)  : 1099, 1178
    master - mean (1,136ms)  : 1093, 1179

HttpMessageHandler (.NET 8)

gantt
    title Execution time (ms) HttpMessageHandler (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8442) - mean (267ms)  : 263, 270
    master - mean (267ms)  : 262, 271

    section Bailout
    This PR (8442) - mean (267ms)  : 263, 271
    master - mean (266ms)  : 263, 270

    section CallTarget+Inlining+NGEN
    This PR (8442) - mean (1,020ms)  : 987, 1052
    master - mean (1,018ms)  : 979, 1058

pr-commenter · 2026-04-13T09:00:04Z

Benchmarks

Benchmark execution time: 2026-04-13 09:00:01

Comparing candidate commit c6ac8de in PR branch andrew/vendor-fix with baseline commit 58f22e8 in branch master.

Found 1 performance improvements and 1 performance regressions! Performance is the same for 25 metrics, 0 unstable metrics, 87 known flaky benchmarks.

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.Trace.HttpClientBenchmark.SendAsync net472

🟥 throughput [-5719.088op/s; -5478.715op/s] or [-6.529%; -6.254%]

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

🟩 throughput [+10134.585op/s; +10943.836op/s] or [+6.885%; +7.434%]

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.Trace.ActivityBenchmark.StartStopWithChild net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.008%; +0.005%]
ignore execution_time [-1465.448µs; -520.366µs] or [-0.728%; -0.259%]
ignore throughput [-163.494op/s; +330.254op/s] or [-0.194%; +0.392%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.007%]
ignore execution_time [-1770.560µs; +1727.549µs] or [-0.883%; +0.862%]
🟩 throughput [+8844.827op/s; +11215.386op/s] or [+7.434%; +9.427%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.003%; +0.007%]
ignore execution_time [-126.707µs; +2099.469µs] or [-0.064%; +1.056%]
ignore throughput [-2427.335op/s; -1220.216op/s] or [-2.468%; -1.241%]

scenario:Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces net472

ignore allocated_mem [-20 bytes; -19 bytes] or [-0.613%; -0.600%]
🟥 execution_time [+306.425ms; +308.219ms] or [+152.059%; +152.949%]
ignore throughput [+8.333op/s; +12.093op/s] or [+1.499%; +2.176%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.009%; +0.002%]
🟥 execution_time [+385.986ms; +387.891ms] or [+304.952%; +306.458%]
ignore throughput [+8.939op/s; +13.309op/s] or [+1.179%; +1.755%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.009%; +0.002%]
🟥 execution_time [+395.853ms; +399.527ms] or [+350.315%; +353.566%]
ignore throughput [-1.176op/s; +1.277op/s] or [-0.166%; +0.180%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.005%]
ignore execution_time [-323.921µs; +247.463µs] or [-0.162%; +0.124%]
ignore throughput [+2145.042op/s; +2614.800op/s] or [+1.669%; +2.034%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.005%]
🟩 execution_time [-15.974ms; -11.792ms] or [-7.461%; -5.507%]
🟩 throughput [+9653.400op/s; +12436.641op/s] or [+7.046%; +9.078%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.002%]
ignore execution_time [-12.465ms; -8.341ms] or [-5.936%; -3.972%]
🟩 throughput [+5698.705op/s; +7961.989op/s] or [+5.152%; +7.199%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.002%; +0.008%]
ignore execution_time [-703.707µs; -132.461µs] or [-0.350%; -0.066%]
ignore throughput [+16650.274op/s; +20490.202op/s] or [+1.700%; +2.092%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.002%; +0.005%]
🟩 execution_time [-26.645ms; -21.775ms] or [-11.883%; -9.711%]
🟩 throughput [+92988.180op/s; +115927.494op/s] or [+9.934%; +12.385%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.004%]
ignore execution_time [-1771.466µs; +2466.232µs] or [-0.884%; +1.231%]
🟩 throughput [+78022.446op/s; +94406.118op/s] or [+11.210%; +13.564%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.007%; +0.003%]
ignore execution_time [-985.452µs; +54.504µs] or [-0.491%; +0.027%]
ignore throughput [+767.650op/s; +1564.278op/s] or [+0.517%; +1.053%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.003%]
ignore execution_time [-0.059ms; +3.419ms] or [-0.030%; +1.725%]
🟩 throughput [+9239.577op/s; +12241.926op/s] or [+5.879%; +7.789%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.007%; +0.003%]
ignore execution_time [+1.938ms; +5.949ms] or [+0.988%; +3.033%]
🟩 throughput [+7187.234op/s; +9825.960op/s] or [+5.726%; +7.828%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.008%; +0.004%]
ignore execution_time [-322.820µs; -113.073µs] or [-0.161%; -0.056%]
ignore throughput [+12023.787op/s; +22646.137op/s] or [+0.366%; +0.689%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.008%]
ignore execution_time [-1.529ms; -0.544ms] or [-0.756%; -0.269%]
🟩 throughput [+485049.436op/s; +503952.352op/s] or [+16.174%; +16.804%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.004%]
🟩 execution_time [-19.118ms; -14.769ms] or [-8.813%; -6.808%]
🟩 throughput [+202396.425op/s; +256645.675op/s] or [+8.034%; +10.187%]

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

ignore allocated_mem [+1 bytes; +4 bytes] or [+0.004%; +0.012%]
🟥 execution_time [+300.169ms; +300.804ms] or [+149.984%; +150.302%]
ignore throughput [+81.964op/s; +104.451op/s] or [+0.905%; +1.154%]

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

ignore allocated_mem [-1 bytes; +2 bytes] or [-0.004%; +0.008%]
🟥 execution_time [+299.675ms; +302.945ms] or [+151.127%; +152.776%]
ignore throughput [+343.423op/s; +555.906op/s] or [+2.627%; +4.252%]

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

ignore allocated_mem [-1 bytes; +2 bytes] or [-0.004%; +0.008%]
🟥 execution_time [+299.373ms; +302.009ms] or [+150.801%; +152.129%]
ignore throughput [+74.517op/s; +203.517op/s] or [+0.719%; +1.965%]

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

ignore allocated_mem [+3 bytes; +4 bytes] or [+0.186%; +0.199%]
🟥 execution_time [+296.824ms; +297.812ms] or [+145.788%; +146.274%]
ignore throughput [+0.473op/s; +6.284op/s] or [+0.013%; +0.167%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.009%]
🟥 execution_time [+297.673ms; +299.574ms] or [+145.521%; +146.451%]
ignore throughput [+57.754op/s; +78.456op/s] or [+0.839%; +1.140%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.009%]
🟥 execution_time [+301.275ms; +302.271ms] or [+150.577%; +151.075%]
ignore throughput [+37.269op/s; +57.098op/s] or [+0.740%; +1.133%]

scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark net472

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [+8.814µs; +13.028µs] or [+1.810%; +2.675%]
ignore throughput [-53.146op/s; -36.028op/s] or [-2.588%; -1.755%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.000%; +0.010%]
unstable execution_time [-91.129µs; +400.214µs] or [-20.900%; +91.789%]
ignore throughput [-244.021op/s; -98.814op/s] or [-10.609%; -4.296%]

scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark netcoreapp3.1

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.003%; +0.003%]
ignore execution_time [+8.437µs; +30.405µs] or [+1.808%; +6.514%]
ignore throughput [-149.512op/s; -68.734op/s] or [-6.902%; -3.173%]

scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack net472

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [-2932.920ns; +1340.920ns] or [-0.792%; +0.362%]
ignore throughput [-8.771op/s; +21.819op/s] or [-0.325%; +0.808%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.003%; +0.007%]
🟥 execution_time [+22.455µs; +46.060µs] or [+7.169%; +14.705%]
🟥 throughput [-428.819op/s; -230.164op/s] or [-13.368%; -7.175%]

scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack netcoreapp3.1

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.003%; +0.003%]
ignore execution_time [-13.272µs; +9.110µs] or [-3.631%; +2.492%]
ignore throughput [-101.679op/s; +31.916op/s] or [-3.649%; +1.145%]

scenario:Benchmarks.Trace.AspNetCoreBenchmark.SendRequest net472

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
🟥 execution_time [+299.748ms; +300.375ms] or [+149.605%; +149.918%]
ignore throughput [-1263241.352op/s; -700498.363op/s] or [-0.633%; -0.351%]

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

ignore allocated_mem [+58 bytes; +60 bytes] or [+0.324%; +0.335%]
unstable execution_time [+363.652ms; +400.634ms] or [+395.123%; +435.305%]
🟩 throughput [+1211.256op/s; +1335.597op/s] or [+9.953%; +10.975%]

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

ignore allocated_mem [-3 bytes; +0 bytes] or [-0.015%; -0.004%]
unstable execution_time [+300.792ms; +337.621ms] or [+228.389%; +256.352%]
🟩 throughput [+780.135op/s; +978.072op/s] or [+7.552%; +9.468%]

scenario:Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces net472

ignore allocated_mem [+2.787KB; +2.791KB] or [+4.951%; +4.959%]
unstable execution_time [+335.442ms; +400.359ms] or [+154.233%; +184.081%]
🟥 throughput [-479.267op/s; -429.766op/s] or [-43.426%; -38.941%]

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

ignore allocated_mem [-1.270KB; -1.268KB] or [-2.995%; -2.990%]
unstable execution_time [+200.815ms; +334.014ms] or [+85.579%; +142.343%]
🟥 throughput [-744.220op/s; -660.805op/s] or [-49.640%; -44.076%]

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

ignore allocated_mem [+2.092KB; +2.095KB] or [+4.940%; +4.947%]
🟥 execution_time [+346.960ms; +354.799ms] or [+207.522%; +212.211%]
🟥 throughput [-424.473op/s; -389.034op/s] or [-29.555%; -27.088%]

scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice net472

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [-56.247µs; -43.246µs] or [-2.831%; -2.176%]
ignore throughput [+11.373op/s; +14.736op/s] or [+2.260%; +2.928%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [+39.501µs; +54.269µs] or [+2.714%; +3.728%]
ignore throughput [-24.443op/s; -17.683op/s] or [-3.558%; -2.574%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [-201.103µs; -98.993µs] or [-6.996%; -3.444%]
ignore throughput [+13.833op/s; +34.364op/s] or [+3.976%; +9.878%]

scenario:Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool net472

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [-14.389µs; -3.351µs] or [-1.243%; -0.289%]
ignore throughput [+3.115op/s; +11.122op/s] or [+0.361%; +1.288%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [-45.414µs; -22.219µs] or [-4.212%; -2.061%]
ignore throughput [+21.383op/s; +45.205op/s] or [+2.306%; +4.874%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
ignore execution_time [+35.419µs; +45.956µs] or [+1.898%; +2.462%]
ignore throughput [-12.850op/s; -9.903op/s] or [-2.399%; -1.849%]

scenario:Benchmarks.Trace.CharSliceBenchmark.OriginalCharSlice net472

ignore allocated_mem [-43 bytes; +21 bytes] or [-0.007%; +0.003%]
ignore execution_time [+48.622µs; +66.033µs] or [+1.899%; +2.579%]
ignore throughput [-9.713op/s; -7.189op/s] or [-2.487%; -1.841%]

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

ignore allocated_mem [-38 bytes; +46 bytes] or [-0.006%; +0.007%]
ignore execution_time [-130.208µs; -89.738µs] or [-6.596%; -4.546%]
🟩 throughput [+26.196op/s; +36.412op/s] or [+5.171%; +7.188%]

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

ignore allocated_mem [-42 bytes; +23 bytes] or [-0.007%; +0.004%]
ignore execution_time [-156.405µs; -116.713µs] or [-3.966%; -2.960%]
ignore throughput [+7.987op/s; +10.547op/s] or [+3.149%; +4.159%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.001%; +0.008%]
🟥 execution_time [+297.893ms; +299.471ms] or [+150.013%; +150.808%]
ignore throughput [-237.613op/s; +1343.763op/s] or [-0.076%; +0.432%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.004%]
🟥 execution_time [+300.586ms; +301.646ms] or [+150.624%; +151.155%]
🟩 throughput [+34556.601op/s; +40236.753op/s] or [+5.448%; +6.344%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.004%]
🟥 execution_time [+299.511ms; +302.781ms] or [+150.462%; +152.104%]
ignore throughput [+11986.419op/s; +19969.849op/s] or [+2.525%; +4.207%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearchAsync net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.008%; +0.004%]
🟥 execution_time [+302.943ms; +304.269ms] or [+152.128%; +152.794%]
ignore throughput [+10319.365op/s; +12000.775op/s] or [+3.457%; +4.020%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.007%; +0.006%]
🟥 execution_time [+298.568ms; +299.838ms] or [+147.628%; +148.256%]
🟩 throughput [+32165.688op/s; +37813.300op/s] or [+5.183%; +6.092%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.004%]
🟥 execution_time [+302.908ms; +306.512ms] or [+153.527%; +155.354%]
ignore throughput [+5280.709op/s; +13485.887op/s] or [+1.140%; +2.912%]

scenario:Benchmarks.Trace.GraphQLBenchmark.ExecuteAsync net472

ignore allocated_mem [+0 bytes; +1 bytes] or [+0.108%; +0.119%]
🟥 execution_time [+301.738ms; +303.486ms] or [+151.445%; +152.323%]
ignore throughput [+6156.899op/s; +8379.808op/s] or [+1.597%; +2.174%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.006%]
🟥 execution_time [+300.022ms; +302.463ms] or [+149.534%; +150.750%]
🟩 throughput [+62915.747op/s; +69324.944op/s] or [+12.493%; +13.766%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.006%]
🟥 execution_time [+302.687ms; +305.584ms] or [+150.584%; +152.026%]
ignore throughput [-4058.457op/s; +1384.536op/s] or [-0.961%; +0.328%]

scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.003%; +0.006%]
ignore execution_time [-1454.453µs; -503.401µs] or [-0.723%; -0.250%]
ignore throughput [+1699.754op/s; +2972.955op/s] or [+0.684%; +1.196%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.003%]
🟩 execution_time [-15.865ms; -12.192ms] or [-7.377%; -5.669%]
🟩 throughput [+24659.021op/s; +31688.366op/s] or [+6.765%; +8.693%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.008%]
ignore execution_time [-0.571ms; +3.387ms] or [-0.286%; +1.699%]
ignore throughput [+4613.390op/s; +10460.873op/s] or [+1.684%; +3.818%]

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

ignore allocated_mem [-4.459KB; -4.431KB] or [-1.623%; -1.613%]
unstable execution_time [+4.784µs; +46.548µs] or [+1.182%; +11.498%]
ignore throughput [-236.992op/s; -30.621op/s] or [-9.537%; -1.232%]

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

🟩 allocated_mem [-26.695KB; -26.675KB] or [-9.738%; -9.731%]
unstable execution_time [-49.481µs; +2.094µs] or [-9.780%; +0.414%]
ignore throughput [+1.118op/s; +182.116op/s] or [+0.056%; +9.088%]

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

ignore allocated_mem [-536 bytes; -520 bytes] or [-0.195%; -0.190%]
ignore execution_time [-56.227µs; +0.292µs] or [-9.744%; +0.051%]
ignore throughput [+13.143op/s; +167.492op/s] or [+0.751%; +9.569%]

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

ignore allocated_mem [-2 bytes; +2 bytes] or [-0.005%; +0.006%]
ignore execution_time [-457.047ns; +939.713ns] or [-0.792%; +1.628%]
ignore throughput [-261.923op/s; +134.504op/s] or [-1.511%; +0.776%]

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

ignore allocated_mem [-4 bytes; +0 bytes] or [-0.010%; -0.001%]
unstable execution_time [+6.264µs; +10.623µs] or [+14.806%; +25.109%]
🟥 throughput [-4674.820op/s; -2839.687op/s] or [-19.680%; -11.954%]

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

ignore allocated_mem [-1 bytes; +1 bytes] or [-0.002%; +0.002%]
unstable execution_time [-14.786µs; -7.786µs] or [-22.940%; -12.079%]
🟩 throughput [+2014.548op/s; +3496.847op/s] or [+12.360%; +21.454%]

scenario:Benchmarks.Trace.Log4netBenchmark.EnrichedLog net472

ignore allocated_mem [+3 bytes; +4 bytes] or [+0.084%; +0.094%]
🟥 execution_time [+302.654ms; +305.200ms] or [+152.978%; +154.265%]
ignore throughput [-129.784op/s; -100.615op/s] or [-2.169%; -1.681%]

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

ignore allocated_mem [-1 bytes; +0 bytes] or [-0.027%; -0.017%]
🟥 execution_time [+306.123ms; +309.671ms] or [+155.816%; +157.621%]
ignore throughput [-137.403op/s; -46.113op/s] or [-1.704%; -0.572%]

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

ignore allocated_mem [-1 bytes; +0 bytes] or [-0.027%; -0.017%]
🟥 execution_time [+300.517ms; +302.423ms] or [+150.446%; +151.400%]
ignore throughput [-97.860op/s; -34.324op/s] or [-1.247%; -0.437%]

scenario:Benchmarks.Trace.RedisBenchmark.SendReceive net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.005%]
ignore execution_time [-788.012µs; -327.854µs] or [-0.393%; -0.163%]
🟥 throughput [-21020.491op/s; -18896.044op/s] or [-5.819%; -5.231%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.007%]
ignore execution_time [+321.988µs; +914.366µs] or [+0.161%; +0.457%]
🟩 throughput [+54565.901op/s; +59341.319op/s] or [+10.328%; +11.232%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.006%]
ignore execution_time [+1.030ms; +4.726ms] or [+0.522%; +2.396%]
ignore throughput [+4756.630op/s; +13306.141op/s] or [+1.126%; +3.149%]

scenario:Benchmarks.Trace.SerilogBenchmark.EnrichedLog net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.006%]
🟥 execution_time [+300.206ms; +301.804ms] or [+149.626%; +150.422%]
ignore throughput [-6622.605op/s; -5524.382op/s] or [-4.373%; -3.648%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [+0.000%; +0.009%]
🟥 execution_time [+301.199ms; +303.106ms] or [+151.248%; +152.205%]
ignore throughput [+5600.992op/s; +7446.834op/s] or [+2.436%; +3.239%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.003%]
🟥 execution_time [+303.836ms; +306.586ms] or [+154.086%; +155.481%]
ignore throughput [+1467.495op/s; +3610.247op/s] or [+0.827%; +2.033%]

scenario:Benchmarks.Trace.SingleSpanAspNetCoreBenchmark.SingleSpanAspNetCore net472

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
🟥 execution_time [+299.927ms; +300.518ms] or [+149.605%; +149.900%]
🟩 throughput [+61315131.885op/s; +61563758.943op/s] or [+44.653%; +44.835%]

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

ignore allocated_mem [+52 bytes; +54 bytes] or [+0.306%; +0.316%]
unstable execution_time [+340.494ms; +388.146ms] or [+423.465%; +482.729%]
🟩 throughput [+905.678op/s; +1101.535op/s] or [+7.001%; +8.515%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [+nan%; +nan%]
🟥 execution_time [+299.117ms; +300.052ms] or [+149.193%; +149.659%]
ignore throughput [-909670.132op/s; +1577633.751op/s] or [-0.403%; +0.699%]

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.006%]
ignore execution_time [+14.529µs; +473.033µs] or [+0.007%; +0.237%]
ignore throughput [-27681.157op/s; -25413.976op/s] or [-3.089%; -2.836%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.007%]
ignore execution_time [-5.307ms; -3.696ms] or [-2.599%; -1.810%]
🟩 throughput [+94503.305op/s; +103620.681op/s] or [+8.823%; +9.675%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.003%; +0.006%]
ignore execution_time [+0.414ms; +4.533ms] or [+0.210%; +2.294%]
ignore throughput [+42226.515op/s; +61592.207op/s] or [+4.888%; +7.129%]

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishSpan net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.000%; +0.009%]
ignore execution_time [-405.566µs; +176.230µs] or [-0.203%; +0.088%]
ignore throughput [+7570.048op/s; +11085.057op/s] or [+0.693%; +1.015%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.004%]
ignore execution_time [+6.197ms; +10.284ms] or [+3.229%; +5.358%]
🟩 throughput [+93569.986op/s; +124131.633op/s] or [+7.242%; +9.608%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.001%; +0.008%]
ignore execution_time [-3.906ms; -2.494ms] or [-1.919%; -1.225%]
🟩 throughput [+84573.951op/s; +92462.701op/s] or [+8.400%; +9.183%]

scenario:Benchmarks.Trace.SpanBenchmark.StartFinishTwoScopes net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.008%; +0.002%]
ignore execution_time [-1185.643µs; +214.106µs] or [-0.590%; +0.107%]
ignore throughput [+6117.248op/s; +9134.793op/s] or [+1.363%; +2.035%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.004%; +0.009%]
ignore execution_time [-257.008µs; +1366.011µs] or [-0.128%; +0.682%]
🟩 throughput [+50185.371op/s; +55418.997op/s] or [+9.113%; +10.063%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.006%; +0.004%]
ignore execution_time [-0.809ms; +3.270ms] or [-0.406%; +1.643%]
🟩 throughput [+23992.794op/s; +33719.017op/s] or [+5.370%; +7.547%]

scenario:Benchmarks.Trace.TraceAnnotationsBenchmark.RunOnMethodBegin net472

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.006%]
ignore execution_time [-1113.014µs; -155.355µs] or [-0.555%; -0.077%]
ignore throughput [-20776.833op/s; -17459.275op/s] or [-3.041%; -2.555%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.007%]
ignore execution_time [-0.919ms; +3.011ms] or [-0.460%; +1.506%]
🟩 throughput [+82942.425op/s; +101294.466op/s] or [+9.267%; +11.317%]

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

ignore allocated_mem [+0 bytes; +0 bytes] or [-0.005%; +0.005%]
ignore execution_time [+1.418ms; +5.357ms] or [+0.720%; +2.721%]
ignore throughput [+21121.057op/s; +36051.026op/s] or [+2.949%; +5.034%]

lucaspimentel · 2026-04-13T18:46:42Z

The benchmarks in the PR description don't have before vs after 😅

andrewlock · 2026-04-13T19:58:32Z

The benchmarks in the PR description don't have before vs after 😅

The point was comparing .NET FX (i.e. vendored array pool) to built-in array pool 😉

Method	Runtime	Mean	Allocated
BuildKey_ClientSpanWithPeerTags	.NET Core 3.1	1,666.94 ns	688 B
BuildKey_ClientSpanWithPeerTags	.NET Framework 4.8	4,002.83 ns	2391 B

Urgent fix for ArrayPool

c6ac8de

andrewlock added the type:bug label Apr 13, 2026

andrewlock requested a review from a team as a code owner April 13, 2026 08:02

andrewlock added area:tracer The core tracer library (Datadog.Trace, does not include OpenTracing, native code, or integrations) type:performance Performance, speed, latency, resource usage (CPU, memory) labels Apr 13, 2026

tonyredondo approved these changes Apr 13, 2026

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bouwkast approved these changes Apr 13, 2026

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andrewlock merged commit 102da2d into master Apr 13, 2026
147 checks passed

andrewlock deleted the andrew/vendor-fix branch April 13, 2026 14:08

github-actions Bot added this to the vNext-v3 milestone Apr 13, 2026

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andrewlock commented Apr 13, 2026

Summary of changes

Reason for change

Implementation details

Test coverage

Other details

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dd-trace-dotnet-ci-bot Bot commented Apr 13, 2026

Execution-Time Benchmarks Report ⏱️

FakeDbCommand

HttpMessageHandler

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pr-commenter Bot commented Apr 13, 2026

Benchmarks

Explanation

More details about the CI and significant changes

scenario:Benchmarks.Trace.HttpClientBenchmark.SendAsync net472

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

Known flaky benchmarks

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 net472

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

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

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

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

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 net6.0

scenario:Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack netcoreapp3.1

scenario:Benchmarks.Trace.AspNetCoreBenchmark.SendRequest net472

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

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

scenario:Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces net472

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

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

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

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch net472

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

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

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearchAsync net472

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

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

scenario:Benchmarks.Trace.GraphQLBenchmark.ExecuteAsync net472

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

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

scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog net472

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