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[Profiler] Improve native unwinding performance on arm64#8689

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gleocadie merged 9 commits into
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gleocadie/provide-libunwind-with-get-proc-name-custom-impl
Jun 9, 2026
Merged

[Profiler] Improve native unwinding performance on arm64#8689
gleocadie merged 9 commits into
masterfrom
gleocadie/provide-libunwind-with-get-proc-name-custom-impl

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@gleocadie

@gleocadie gleocadie commented May 26, 2026 •
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Summary of changes

Improve unwinding performance on arm64.

Reason for change

After releasing, we conducted performance tests and saw that unwinding was causing a +50% CPU overhead.
image

In parallel, we got a report confirming our measurements #8694.
With the improvement brought by this PR, we drastically reduce it
image

Implementation details

As the flamegraph exposed, the libunwind get_proc_name function was causing troubles. For each instruction pointer, it would parse the /proc/<id>/maps file.

In this PR, we use the same approach as dl_iterate_phdr: we listen to dlopen/dlcose, build a cache of proc names and replace libunwind get_proc_name by ours.

Test coverage

Current tests should still work.
Additional tests on parsing symtab and dynsym.

Other details

@github-actions github-actions Bot added the area:profiler Issues related to the continous-profiler label May 26, 2026
@dd-trace-dotnet-ci-bot

dd-trace-dotnet-ci-bot Bot commented May 26, 2026 •
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Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing This PR (8689) 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
duration73.52 ± (73.65 - 74.06) ms73.32 ± (73.32 - 73.63) ms-0.3%✅
.NET Framework 4.8 - Bailout
duration76.90 ± (76.98 - 77.36) ms76.77 ± (76.60 - 77.04) ms-0.2%✅
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration1104.15 ± (1103.23 - 1109.63) ms1109.63 ± (1107.79 - 1114.88) ms+0.5%✅⬆️
.NET Core 3.1 - Baseline
process.internal_duration_ms22.53 ± (22.49 - 22.56) ms22.49 ± (22.45 - 22.53) ms-0.2%✅
process.time_to_main_ms84.55 ± (84.35 - 84.75) ms84.20 ± (84.00 - 84.40) ms-0.4%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.92 ± (10.92 - 10.92) MB10.93 ± (10.92 - 10.93) MB+0.1%✅⬆️
runtime.dotnet.threads.count12 ± (12 - 12)12 ± (12 - 12)+0.0%✅
.NET Core 3.1 - Bailout
process.internal_duration_ms22.39 ± (22.35 - 22.43) ms22.83 ± (22.79 - 22.88) ms+2.0%✅⬆️
process.time_to_main_ms85.99 ± (85.78 - 86.20) ms88.65 ± (88.37 - 88.92) ms+3.1%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.95 ± (10.94 - 10.95) MB10.96 ± (10.95 - 10.96) MB+0.1%✅⬆️
runtime.dotnet.threads.count13 ± (13 - 13)13 ± (13 - 13)+0.0%✅
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms215.15 ± (214.28 - 216.02) ms214.75 ± (213.92 - 215.58) ms-0.2%✅
process.time_to_main_ms540.47 ± (539.09 - 541.85) ms542.80 ± (541.36 - 544.23) ms+0.4%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed48.32 ± (48.29 - 48.36) MB48.31 ± (48.27 - 48.35) MB-0.0%✅
runtime.dotnet.threads.count28 ± (28 - 28)28 ± (28 - 28)+0.4%✅⬆️
.NET 6 - Baseline
process.internal_duration_ms21.54 ± (21.49 - 21.59) ms21.34 ± (21.29 - 21.38) ms-0.9%✅
process.time_to_main_ms76.00 ± (75.74 - 76.25) ms74.40 ± (74.17 - 74.64) ms-2.1%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.63 ± (10.63 - 10.63) MB10.63 ± (10.63 - 10.64) MB+0.0%✅⬆️
runtime.dotnet.threads.count10 ± (10 - 10)10 ± (10 - 10)+0.0%✅
.NET 6 - Bailout
process.internal_duration_ms21.27 ± (21.23 - 21.31) ms21.43 ± (21.38 - 21.48) ms+0.7%✅⬆️
process.time_to_main_ms75.52 ± (75.33 - 75.72) ms76.48 ± (76.23 - 76.73) ms+1.3%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.75 ± (10.75 - 10.76) MB10.76 ± (10.75 - 10.76) MB+0.0%✅⬆️
runtime.dotnet.threads.count11 ± (11 - 11)11 ± (11 - 11)+0.0%✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms371.92 ± (369.59 - 374.26) ms370.83 ± (369.02 - 372.65) ms-0.3%✅
process.time_to_main_ms545.78 ± (544.59 - 546.96) ms547.49 ± (546.05 - 548.94) ms+0.3%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed49.78 ± (49.76 - 49.80) MB49.81 ± (49.79 - 49.83) MB+0.1%✅⬆️
runtime.dotnet.threads.count28 ± (28 - 28)28 ± (28 - 28)+0.2%✅⬆️
.NET 8 - Baseline
process.internal_duration_ms19.43 ± (19.39 - 19.47) ms19.31 ± (19.27 - 19.34) ms-0.6%✅
process.time_to_main_ms72.73 ± (72.54 - 72.92) ms72.00 ± (71.84 - 72.16) ms-1.0%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed7.68 ± (7.68 - 7.69) MB7.69 ± (7.68 - 7.69) MB+0.0%✅⬆️
runtime.dotnet.threads.count10 ± (10 - 10)10 ± (10 - 10)+0.0%✅
.NET 8 - Bailout
process.internal_duration_ms19.81 ± (19.76 - 19.86) ms19.47 ± (19.42 - 19.52) ms-1.7%✅
process.time_to_main_ms76.44 ± (76.21 - 76.66) ms74.45 ± (74.16 - 74.73) ms-2.6%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed7.73 ± (7.72 - 7.73) MB7.74 ± (7.73 - 7.74) MB+0.2%✅⬆️
runtime.dotnet.threads.count11 ± (11 - 11)11 ± (11 - 11)+0.0%✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms296.57 ± (294.39 - 298.76) ms299.27 ± (297.09 - 301.45) ms+0.9%✅⬆️
process.time_to_main_ms496.97 ± (495.93 - 498.00) ms495.34 ± (494.35 - 496.33) ms-0.3%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed36.83 ± (36.80 - 36.86) MB36.88 ± (36.85 - 36.90) MB+0.1%✅⬆️
runtime.dotnet.threads.count27 ± (27 - 27)27 ± (27 - 27)+0.0%✅⬆️

HttpMessageHandler

Metric Master (Mean ± 95% CI) Current (Mean ± 95% CI) Change Status
.NET Framework 4.8 - Baseline
duration198.26 ± (198.31 - 199.12) ms196.87 ± (196.93 - 197.83) ms-0.7%✅
.NET Framework 4.8 - Bailout
duration201.50 ± (201.01 - 201.87) ms200.98 ± (200.58 - 201.38) ms-0.3%✅
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration1193.82 ± (1193.73 - 1199.12) ms1193.89 ± (1193.53 - 1199.86) ms+0.0%✅⬆️
.NET Core 3.1 - Baseline
process.internal_duration_ms192.71 ± (192.27 - 193.15) ms192.94 ± (192.51 - 193.37) ms+0.1%✅⬆️
process.time_to_main_ms84.01 ± (83.71 - 84.32) ms83.59 ± (83.34 - 83.84) ms-0.5%✅
runtime.dotnet.exceptions.count3 ± (3 - 3)3 ± (3 - 3)+0.0%✅
runtime.dotnet.mem.committed16.10 ± (16.08 - 16.13) MB16.07 ± (16.05 - 16.09) MB-0.2%✅
runtime.dotnet.threads.count20 ± (20 - 20)20 ± (19 - 20)-0.2%✅
.NET Core 3.1 - Bailout
process.internal_duration_ms191.28 ± (190.83 - 191.73) ms191.81 ± (191.31 - 192.31) ms+0.3%✅⬆️
process.time_to_main_ms84.72 ± (84.44 - 84.99) ms85.07 ± (84.79 - 85.35) ms+0.4%✅⬆️
runtime.dotnet.exceptions.count3 ± (3 - 3)3 ± (3 - 3)+0.0%✅
runtime.dotnet.mem.committed16.11 ± (16.08 - 16.14) MB16.12 ± (16.10 - 16.15) MB+0.1%✅⬆️
runtime.dotnet.threads.count21 ± (21 - 21)21 ± (21 - 21)+0.1%✅⬆️
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms385.55 ± (384.29 - 386.81) ms385.07 ± (383.52 - 386.61) ms-0.1%✅
process.time_to_main_ms533.88 ± (532.76 - 534.99) ms536.28 ± (534.80 - 537.76) ms+0.4%✅⬆️
runtime.dotnet.exceptions.count3 ± (3 - 3)3 ± (3 - 3)+0.0%✅
runtime.dotnet.mem.committed57.34 ± (57.16 - 57.52) MB57.19 ± (57.03 - 57.34) MB-0.3%✅
runtime.dotnet.threads.count30 ± (30 - 30)30 ± (30 - 30)-0.0%✅
.NET 6 - Baseline
process.internal_duration_ms198.24 ± (197.77 - 198.71) ms196.85 ± (196.39 - 197.31) ms-0.7%✅
process.time_to_main_ms72.85 ± (72.57 - 73.14) ms72.36 ± (72.13 - 72.59) ms-0.7%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed16.31 ± (16.29 - 16.34) MB16.39 ± (16.37 - 16.42) MB+0.5%✅⬆️
runtime.dotnet.threads.count19 ± (19 - 19)19 ± (19 - 19)-0.5%✅
.NET 6 - Bailout
process.internal_duration_ms198.03 ± (197.56 - 198.50) ms195.82 ± (195.36 - 196.29) ms-1.1%✅
process.time_to_main_ms73.93 ± (73.69 - 74.18) ms73.40 ± (73.15 - 73.66) ms-0.7%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed16.37 ± (16.35 - 16.39) MB16.43 ± (16.40 - 16.45) MB+0.4%✅⬆️
runtime.dotnet.threads.count20 ± (20 - 20)20 ± (20 - 20)-0.2%✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms587.28 ± (584.83 - 589.72) ms584.12 ± (581.67 - 586.58) ms-0.5%✅
process.time_to_main_ms538.10 ± (537.02 - 539.19) ms541.22 ± (540.20 - 542.23) ms+0.6%✅⬆️
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed61.12 ± (61.02 - 61.23) MB61.08 ± (61.00 - 61.16) MB-0.1%✅
runtime.dotnet.threads.count31 ± (31 - 31)31 ± (31 - 31)+0.0%✅⬆️
.NET 8 - Baseline
process.internal_duration_ms193.50 ± (193.02 - 193.98) ms193.33 ± (192.91 - 193.75) ms-0.1%✅
process.time_to_main_ms71.29 ± (71.08 - 71.51) ms71.31 ± (71.09 - 71.53) ms+0.0%✅⬆️
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed11.70 ± (11.68 - 11.72) MB11.82 ± (11.80 - 11.84) MB+1.1%✅⬆️
runtime.dotnet.threads.count18 ± (18 - 18)18 ± (18 - 18)-0.4%✅
.NET 8 - Bailout
process.internal_duration_ms193.51 ± (193.07 - 193.95) ms192.80 ± (192.43 - 193.18) ms-0.4%✅
process.time_to_main_ms72.31 ± (72.12 - 72.50) ms72.54 ± (72.35 - 72.73) ms+0.3%✅⬆️
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed11.75 ± (11.73 - 11.78) MB11.82 ± (11.79 - 11.84) MB+0.6%✅⬆️
runtime.dotnet.threads.count19 ± (19 - 19)19 ± (19 - 19)-0.3%✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms511.88 ± (509.36 - 514.40) ms512.17 ± (509.61 - 514.73) ms+0.1%✅⬆️
process.time_to_main_ms486.79 ± (485.99 - 487.60) ms488.23 ± (487.42 - 489.04) ms+0.3%✅⬆️
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed50.57 ± (50.54 - 50.60) MB50.71 ± (50.67 - 50.75) MB+0.3%✅⬆️
runtime.dotnet.threads.count29 ± (29 - 29)29 ± (29 - 30)+0.6%✅⬆️
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 (8689) - mean (73ms)  : 71, 76
    master - mean (74ms)  : 71, 77

    section Bailout
    This PR (8689) - mean (77ms)  : 75, 79
    master - mean (77ms)  : 75, 80

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (1,111ms)  : 1060, 1162
    master - mean (1,106ms)  : 1059, 1153
Loading
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 (8689) - mean (114ms)  : 110, 117
    master - mean (114ms)  : 109, 119

    section Bailout
    This PR (8689) - mean (119ms)  : 113, 124
    master - mean (115ms)  : 112, 118

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (796ms)  : 778, 813
    master - mean (793ms)  : 770, 817
Loading
FakeDbCommand (.NET 6) 
gantt
    title Execution time (ms) FakeDbCommand (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8689) - mean (102ms)  : 98, 106
    master - mean (104ms)  : 100, 109

    section Bailout
    This PR (8689) - mean (105ms)  : 100, 109
    master - mean (103ms)  : 100, 107

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (951ms)  : 913, 988
    master - mean (951ms)  : 908, 994
Loading
FakeDbCommand (.NET 8) 
gantt
    title Execution time (ms) FakeDbCommand (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8689) - mean (99ms)  : 95, 103
    master - mean (100ms)  : 96, 104

    section Bailout
    This PR (8689) - mean (102ms)  : 96, 108
    master - mean (104ms)  : 100, 109

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (827ms)  : 783, 871
    master - mean (825ms)  : 785, 866
Loading
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 (8689) - mean (197ms)  : 192, 203
    master - mean (199ms)  : 194, 203

    section Bailout
    This PR (8689) - mean (201ms)  : 197, 205
    master - mean (201ms)  : 197, 206

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (1,197ms)  : 1151, 1242
    master - mean (1,196ms)  : 1159, 1234
Loading
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 (8689) - mean (286ms)  : 275, 296
    master - mean (285ms)  : 278, 293

    section Bailout
    This PR (8689) - mean (286ms)  : 280, 293
    master - mean (285ms)  : 279, 291

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (960ms)  : 937, 984
    master - mean (961ms)  : 941, 981
Loading
HttpMessageHandler (.NET 6) 
gantt
    title Execution time (ms) HttpMessageHandler (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8689) - mean (278ms)  : 272, 284
    master - mean (280ms)  : 271, 289

    section Bailout
    This PR (8689) - mean (277ms)  : 271, 284
    master - mean (281ms)  : 273, 289

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (1,156ms)  : 1112, 1201
    master - mean (1,153ms)  : 1121, 1185
Loading
HttpMessageHandler (.NET 8) 
gantt
    title Execution time (ms) HttpMessageHandler (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (8689) - mean (275ms)  : 268, 281
    master - mean (275ms)  : 266, 283

    section Bailout
    This PR (8689) - mean (275ms)  : 270, 281
    master - mean (275ms)  : 270, 280

    section CallTarget+Inlining+NGEN
    This PR (8689) - mean (1,034ms)  : 999, 1069
    master - mean (1,031ms)  : 994, 1067
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Benchmarks

Benchmark execution time: 2026-06-08 12:12:02

Comparing candidate commit 448e10c in PR branch gleocadie/provide-libunwind-with-get-proc-name-custom-impl with baseline commit 2b0596d in branch master.

📊 Benchmarking dashboard

Found 0 performance improvements and 1 performance regressions! Performance is the same for 70 metrics, 1 unstable metrics, 57 known flaky benchmarks, 69 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.Trace.HttpClientBenchmark.SendAsync net472

  • 🟥 throughput [-5483.655op/s; -5112.151op/s] or [-6.260%; -5.836%]

Unstable benchmarks

These benchmarks have a confidence interval too wide to call a change; treat them as noise rather than signal.

scenario:Benchmarks.Trace.HttpClientBenchmark.SendAsync netcoreapp3.1

  • unstable execution_time [-28.144ms; -7.647ms] or [-14.055%; -3.819%]

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

  • 🟥 throughput [-7440.938op/s; -6847.431op/s] or [-8.823%; -8.119%]

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

  • 🟥 throughput [-10620.310op/s; -5808.925op/s] or [-10.799%; -5.906%]

scenario:Benchmarks.Trace.AgentWriterBenchmark.WriteAndFlushEnrichedTraces net472

  • 🟥 execution_time [+305.820ms; +313.131ms] or [+151.759%; +155.387%]
  • 🟥 throughput [-44.318op/s; -40.380op/s] or [-7.974%; -7.265%]

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

  • 🟥 execution_time [+378.537ms; +380.965ms] or [+299.067%; +300.986%]
  • 🟩 throughput [+86.301op/s; +90.497op/s] or [+11.378%; +11.932%]

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

  • 🟥 execution_time [+392.159ms; +394.026ms] or [+347.046%; +348.698%]

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 [+471 bytes; +472 bytes] or [+9.976%; +9.987%]
  • 🟩 execution_time [-15.487ms; -11.173ms] or [-7.233%; -5.218%]

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 [-278010.156op/s; -273487.424op/s] or [-28.386%; -27.924%]

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

  • 🟥 allocated_mem [+471 bytes; +472 bytes] or [+38.557%; +38.566%]
  • 🟩 execution_time [-26.941ms; -22.069ms] or [-12.015%; -9.842%]

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

  • 🟥 allocated_mem [+1.272KB; +1.272KB] or [+105.288%; +105.304%]
  • 🟥 throughput [-166359.477op/s; -150498.200op/s] or [-23.903%; -21.624%]

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

  • 🟩 throughput [+9338.694op/s; +12248.229op/s] or [+5.942%; +7.793%]

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

  • 🟩 throughput [+9654.050op/s; +12323.994op/s] or [+7.691%; +9.818%]

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

  • 🟩 throughput [+432990.688op/s; +501410.145op/s] or [+14.438%; +16.719%]

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

  • 🟩 execution_time [-18.757ms; -14.411ms] or [-8.646%; -6.643%]
  • 🟩 throughput [+172026.412op/s; +225805.762op/s] or [+6.828%; +8.963%]

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

  • 🟥 execution_time [+299.081ms; +299.956ms] or [+149.441%; +149.878%]

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

  • 🟥 execution_time [+299.459ms; +303.254ms] or [+151.018%; +152.932%]

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

  • 🟥 execution_time [+299.003ms; +301.406ms] or [+150.614%; +151.825%]

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

  • 🟥 execution_time [+295.491ms; +296.640ms] or [+145.133%; +145.698%]

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

  • 🟥 execution_time [+296.642ms; +299.500ms] or [+145.018%; +146.415%]

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

  • 🟥 execution_time [+296.890ms; +300.104ms] or [+148.385%; +149.992%]

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

  • 🟥 execution_time [+26.524µs; +50.382µs] or [+8.468%; +16.084%]
  • 🟥 throughput [-463.564op/s; -263.028op/s] or [-14.451%; -8.199%]

scenario:Benchmarks.Trace.AspNetCoreBenchmark.SendRequest net472

  • 🟥 execution_time [+300.302ms; +301.152ms] or [+149.881%; +150.306%]

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

  • 🟥 execution_time [+416.710ms; +422.962ms] or [+452.773%; +459.565%]
  • 🟩 throughput [+681.075op/s; +846.502op/s] or [+5.596%; +6.956%]

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

  • unstable execution_time [+297.047ms; +350.373ms] or [+225.545%; +266.035%]

scenario:Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces net472

  • 🟥 allocated_mem [+3.799KB; +3.805KB] or [+6.750%; +6.760%]
  • unstable execution_time [+266.957ms; +324.745ms] or [+122.744%; +149.315%]
  • 🟥 throughput [-553.262op/s; -500.001op/s] or [-50.131%; -45.305%]

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

  • unstable execution_time [+202.602ms; +335.888ms] or [+86.340%; +143.141%]
  • 🟥 throughput [-670.953op/s; -587.441op/s] or [-44.753%; -39.182%]

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

  • 🟥 execution_time [+322.604ms; +333.408ms] or [+192.955%; +199.416%]
  • 🟥 throughput [-381.219op/s; -343.987op/s] or [-26.544%; -23.951%]

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

  • 🟩 execution_time [-182.578µs; -138.263µs] or [-9.249%; -7.004%]
  • 🟩 throughput [+40.135op/s; +51.185op/s] or [+7.923%; +10.104%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch net472

  • 🟥 execution_time [+300.207ms; +304.244ms] or [+151.178%; +153.211%]

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

  • 🟥 execution_time [+302.471ms; +304.553ms] or [+151.569%; +152.612%]

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

  • 🟥 execution_time [+300.025ms; +304.108ms] or [+150.720%; +152.771%]

scenario:Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearchAsync net472

  • 🟥 execution_time [+302.865ms; +306.306ms] or [+152.089%; +153.817%]

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

  • 🟥 execution_time [+297.158ms; +299.450ms] or [+146.932%; +148.065%]

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

  • 🟥 execution_time [+305.613ms; +309.307ms] or [+154.898%; +156.770%]

scenario:Benchmarks.Trace.GraphQLBenchmark.ExecuteAsync net472

  • 🟥 execution_time [+301.816ms; +303.850ms] or [+151.484%; +152.505%]

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

  • 🟥 execution_time [+301.544ms; +303.228ms] or [+150.292%; +151.131%]
  • 🟩 throughput [+45558.721op/s; +53048.178op/s] or [+9.046%; +10.534%]

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

  • 🟥 execution_time [+300.161ms; +303.015ms] or [+149.327%; +150.747%]

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

  • unstable execution_time [+8.979µs; +54.872µs] or [+2.218%; +13.554%]

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

  • 🟩 allocated_mem [-17.961KB; -17.940KB] or [-6.552%; -6.544%]
  • unstable execution_time [-27653.277ns; +27816.035ns] or [-5.466%; +5.498%]

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

  • 🟩 allocated_mem [-18.173KB; -18.153KB] or [-6.625%; -6.617%]
  • unstable execution_time [-54.793µs; +6.208µs] or [-9.495%; +1.076%]

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

  • unstable execution_time [+10.183µs; +16.472µs] or [+24.069%; +38.934%]
  • 🟥 throughput [-6440.710op/s; -4390.892op/s] or [-27.113%; -18.484%]

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

  • unstable execution_time [-15.308µs; -7.402µs] or [-23.750%; -11.484%]
  • unstable throughput [+1987.596op/s; +3695.588op/s] or [+12.195%; +22.674%]

scenario:Benchmarks.Trace.Log4netBenchmark.EnrichedLog net472

  • 🟥 execution_time [+298.567ms; +300.353ms] or [+150.913%; +151.815%]

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

  • 🟥 execution_time [+303.316ms; +305.960ms] or [+154.387%; +155.733%]

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

  • 🟥 execution_time [+302.390ms; +305.298ms] or [+151.383%; +152.839%]

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

  • 🟩 throughput [+32014.196op/s; +35254.846op/s] or [+6.060%; +6.673%]

scenario:Benchmarks.Trace.SerilogBenchmark.EnrichedLog net472

  • 🟥 execution_time [+299.102ms; +301.642ms] or [+149.076%; +150.341%]

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

  • 🟥 execution_time [+300.918ms; +302.102ms] or [+151.107%; +151.701%]

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

  • 🟥 execution_time [+302.931ms; +305.295ms] or [+153.627%; +154.826%]

scenario:Benchmarks.Trace.SingleSpanAspNetCoreBenchmark.SingleSpanAspNetCore net472

  • 🟥 execution_time [+299.289ms; +300.334ms] or [+149.287%; +149.808%]
  • 🟩 throughput [+60798159.457op/s; +61170551.403op/s] or [+44.277%; +44.548%]

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

  • 🟥 execution_time [+418.691ms; +422.676ms] or [+520.717%; +525.673%]

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

  • 🟥 execution_time [+298.923ms; +299.936ms] or [+149.096%; +149.601%]

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

  • 🟩 throughput [+86738.332op/s; +101850.588op/s] or [+8.098%; +9.509%]

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

  • 🟩 throughput [+75236.865op/s; +84019.577op/s] or [+7.472%; +8.344%]

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

  • 🟩 throughput [+46433.112op/s; +53256.482op/s] or [+8.431%; +9.670%]

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

  • 🟩 throughput [+91711.547op/s; +109530.731op/s] or [+10.246%; +12.237%]

Known flaky benchmarks without significant changes:

  • scenario:Benchmarks.OpenTelemetry.InstrumentedApi.Trace.ActivityBenchmark.StartSpan net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net472
  • 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 net6.0
  • 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.CharSliceBenchmark.OriginalCharSlice netcoreapp3.1
  • scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog net472
  • scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog net6.0
  • scenario:Benchmarks.Trace.ILoggerBenchmark.EnrichedLog netcoreapp3.1
  • scenario:Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark net472
  • scenario:Benchmarks.Trace.RedisBenchmark.SendReceive net472
  • scenario:Benchmarks.Trace.RedisBenchmark.SendReceive netcoreapp3.1
  • scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope net472
  • scenario:Benchmarks.Trace.SpanBenchmark.StartFinishScope netcoreapp3.1
  • scenario:Benchmarks.Trace.SpanBenchmark.StartFinishSpan net472
  • scenario:Benchmarks.Trace.SpanBenchmark.StartFinishSpan net6.0
  • scenario:Benchmarks.Trace.SpanBenchmark.StartFinishTwoScopes net472
  • scenario:Benchmarks.Trace.SpanBenchmark.StartFinishTwoScopes netcoreapp3.1
  • scenario:Benchmarks.Trace.TraceAnnotationsBenchmark.RunOnMethodBegin net472
  • scenario:Benchmarks.Trace.TraceAnnotationsBenchmark.RunOnMethodBegin netcoreapp3.1

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@gleocadie gleocadie changed the title [Profiler] Improve native unwinding performance [Profiler] Improve native unwinding performance on arm64 Jun 1, 2026
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gleocadie marked this pull request as ready for review June 1, 2026 08:34
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LGTM

r1viollet
r1viollet reviewed Jun 2, 2026
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Comment thread profiler/src/ProfilerEngine/Datadog.Profiler.Native.Linux/LibrariesInfoCache.cpp Outdated
r1viollet
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Comment thread profiler/src/ProfilerEngine/Datadog.Profiler.Native.Linux/LibrariesInfoCache.cpp Outdated
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gleocadie force-pushed the gleocadie/provide-libunwind-with-get-proc-name-custom-impl branch 2 times, most recently from becb9eb to ada1341 Compare June 4, 2026 12:43
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gleocadie force-pushed the gleocadie/provide-libunwind-with-get-proc-name-custom-impl branch 2 times, most recently from 9cae872 to 66ba94b Compare June 5, 2026 17:36
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gleocadie merged commit 4eaf2f9 into master Jun 9, 2026
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gleocadie deleted the gleocadie/provide-libunwind-with-get-proc-name-custom-impl branch June 9, 2026 08:19
@github-actions github-actions Bot added this to the vNext-v3 milestone Jun 9, 2026
zacharycmontoya pushed a commit that referenced this pull request Jun 16, 2026
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[Profiler] Improve native unwinding performance on arm64 (#8689)
d5c2f98
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