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feat(sidecar): implement thread listener module #1447

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@Leiyks Leiyks commented Jan 14, 2026

What does this PR do?

A brief description of the change being made with this pull request.

Motivation

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Additional Notes

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How to test the change?

Describe here in detail how the change can be validated.

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codecov-commenter commented Jan 14, 2026 •
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Codecov Report

❌ Patch coverage is 0% with 211 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.92%. Comparing base (0f94738) to head (b7d89dd).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files 
@@            Coverage Diff             @@
##             main    #1447      +/-   ##
==========================================
- Coverage   71.14%   70.92%   -0.22%     
==========================================
  Files         419      420       +1     
  Lines       67179    67366     +187     
==========================================
- Hits        47792    47782      -10     
- Misses      19387    19584     +197
Components Coverage Δ
libdd-crashtracker 61.41% <ø> (+0.01%) ⬆️
libdd-crashtracker-ffi 16.50% <ø> (ø)
libdd-alloc 98.73% <ø> (ø)
libdd-data-pipeline 86.28% <ø> (ø)
libdd-data-pipeline-ffi 78.57% <ø> (ø)
libdd-common 80.84% <ø> (ø)
libdd-common-ffi 74.19% <ø> (ø)
libdd-telemetry 59.78% <ø> (-0.04%) ⬇️
libdd-telemetry-ffi 21.17% <ø> (ø)
libdd-dogstatsd-client 83.75% <ø> (ø)
datadog-ipc 82.60% <ø> (ø)
libdd-profiling 80.65% <ø> (ø)
libdd-profiling-ffi 62.46% <ø> (ø)
datadog-sidecar 33.55% <0.00%> (-1.40%) ⬇️
datdog-sidecar-ffi 8.33% <0.00%> (-1.93%) ⬇️
spawn-worker 55.18% <ø> (ø)
libdd-tinybytes 93.43% <ø> (ø)
libdd-trace-normalization 82.33% <ø> (ø)
libdd-trace-obfuscation 94.17% <ø> (ø)
libdd-trace-protobuf 61.18% <ø> (ø)
libdd-trace-utils 89.45% <ø> (ø)
datadog-tracer-flare 63.49% <ø> (ø)
libdd-log 75.57% <ø> (ø)
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@Leiyks Leiyks force-pushed the leiyks/sidecar-threaded-fallback branch from df12cb3 to 917aceb Compare January 14, 2026 14:11
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pr-commenter bot commented Jan 14, 2026 •
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Benchmarks

Comparison

Benchmark execution time: 2026-01-26 16:18:03

Comparing candidate commit b7d89dd in PR branch leiyks/sidecar-threaded-fallback with baseline commit 679cb4a in branch main.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 56 metrics, 2 unstable metrics.

scenario:profile_add_sample2_frames_x1000

  • 🟥 execution_time [+23.316µs; +23.542µs] or [+4.404%; +4.446%]

Candidate

Candidate benchmark details

Group 1

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
benching deserializing traces from msgpack to their internal representation execution_time 48.376ms 48.713ms ± 1.200ms 48.567ms ± 0.057ms 48.633ms 48.712ms 51.147ms 62.260ms 28.19% 9.734 98.276 2.46% 0.085ms 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
benching deserializing traces from msgpack to their internal representation execution_time [48.546ms; 48.879ms] or [-0.341%; +0.341%] None None None

Group 2

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
credit_card/is_card_number/ execution_time 3.893µs 3.911µs ± 0.002µs 3.911µs ± 0.001µs 3.912µs 3.915µs 3.917µs 3.918µs 0.17% -2.065 20.085 0.06% 0.000µs 1 200
credit_card/is_card_number/ throughput 255225790.481op/s 255657952.525op/s ± 147041.128op/s 255660922.230op/s ± 69503.552op/s 255731761.885op/s 255829241.100op/s 255889915.651op/s 256843905.703op/s 0.46% 2.095 20.354 0.06% 10397.378op/s 1 200
credit_card/is_card_number/ 3782-8224-6310-005 execution_time 77.063µs 77.485µs ± 0.295µs 77.405µs ± 0.210µs 77.652µs 78.093µs 78.391µs 78.489µs 1.40% 0.929 0.676 0.38% 0.021µs 1 200
credit_card/is_card_number/ 3782-8224-6310-005 throughput 12740699.215op/s 12905928.533op/s ± 48912.709op/s 12919140.999op/s ± 35100.018op/s 12941069.872op/s 12967540.006op/s 12973550.448op/s 12976475.561op/s 0.44% -0.908 0.622 0.38% 3458.651op/s 1 200
credit_card/is_card_number/ 378282246310005 execution_time 70.645µs 71.195µs ± 0.305µs 71.194µs ± 0.214µs 71.346µs 71.710µs 71.956µs 72.276µs 1.52% 0.660 0.527 0.43% 0.022µs 1 200
credit_card/is_card_number/ 378282246310005 throughput 13835866.393op/s 14046268.141op/s ± 59969.169op/s 14046058.221op/s ± 42281.565op/s 14090219.626op/s 14136049.122op/s 14147420.591op/s 14155274.933op/s 0.78% -0.634 0.466 0.43% 4240.461op/s 1 200
credit_card/is_card_number/37828224631 execution_time 3.891µs 3.913µs ± 0.003µs 3.913µs ± 0.002µs 3.915µs 3.919µs 3.920µs 3.928µs 0.38% -0.493 8.203 0.09% 0.000µs 1 200
credit_card/is_card_number/37828224631 throughput 254607530.010op/s 255562827.585op/s ± 223805.471op/s 255571537.022op/s ± 129051.092op/s 255704481.222op/s 255827087.229op/s 255909462.472op/s 256975988.574op/s 0.55% 0.519 8.324 0.09% 15825.437op/s 1 200
credit_card/is_card_number/378282246310005 execution_time 67.407µs 67.831µs ± 0.264µs 67.782µs ± 0.173µs 67.973µs 68.293µs 68.562µs 68.658µs 1.29% 0.681 0.305 0.39% 0.019µs 1 200
credit_card/is_card_number/378282246310005 throughput 14564912.123op/s 14742763.494op/s ± 57177.825op/s 14753174.899op/s ± 37528.612op/s 14774088.492op/s 14822158.906op/s 14831478.821op/s 14835227.732op/s 0.56% -0.660 0.262 0.39% 4043.083op/s 1 200
credit_card/is_card_number/37828224631000521389798 execution_time 44.554µs 45.168µs ± 0.215µs 45.188µs ± 0.157µs 45.345µs 45.476µs 45.507µs 45.531µs 0.76% -0.489 -0.223 0.48% 0.015µs 1 200
credit_card/is_card_number/37828224631000521389798 throughput 21963036.408op/s 22139906.365op/s ± 105774.875op/s 22129950.965op/s ± 76693.267op/s 22206496.514op/s 22310183.761op/s 22434108.678op/s 22444653.456op/s 1.42% 0.511 -0.181 0.48% 7479.413op/s 1 200
credit_card/is_card_number/x371413321323331 execution_time 6.029µs 6.035µs ± 0.006µs 6.034µs ± 0.002µs 6.037µs 6.042µs 6.069µs 6.091µs 0.94% 5.376 38.745 0.11% 0.000µs 1 200
credit_card/is_card_number/x371413321323331 throughput 164168358.466op/s 165687477.251op/s ± 173634.014op/s 165718552.193op/s ± 61057.467op/s 165771555.295op/s 165822136.295op/s 165859102.002op/s 165869186.570op/s 0.09% -5.339 38.315 0.10% 12277.779op/s 1 200
credit_card/is_card_number_no_luhn/ execution_time 3.890µs 3.912µs ± 0.003µs 3.912µs ± 0.001µs 3.913µs 3.916µs 3.918µs 3.919µs 0.17% -2.536 20.483 0.07% 0.000µs 1 200
credit_card/is_card_number_no_luhn/ throughput 255191709.154op/s 255629859.926op/s ± 174244.660op/s 255625255.176op/s ± 78939.535op/s 255704577.114op/s 255879148.693op/s 255962133.124op/s 257048863.913op/s 0.56% 2.569 20.798 0.07% 12320.958op/s 1 200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 execution_time 64.867µs 65.589µs ± 0.090µs 65.590µs ± 0.051µs 65.640µs 65.715µs 65.749µs 65.781µs 0.29% -2.595 19.703 0.14% 0.006µs 1 200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 throughput 15201985.200op/s 15246467.771op/s ± 20897.736op/s 15246136.937op/s ± 11750.531op/s 15257908.770op/s 15271273.767op/s 15293793.191op/s 15416222.904op/s 1.12% 2.657 20.321 0.14% 1477.693op/s 1 200
credit_card/is_card_number_no_luhn/ 378282246310005 execution_time 52.947µs 53.018µs ± 0.039µs 53.010µs ± 0.017µs 53.032µs 53.103µs 53.121µs 53.185µs 0.33% 1.172 1.718 0.07% 0.003µs 1 200
credit_card/is_card_number_no_luhn/ 378282246310005 throughput 18802462.227op/s 18861623.282op/s ± 13951.005op/s 18864414.169op/s ± 6186.340op/s 18869111.736op/s 18879703.755op/s 18884910.051op/s 18886852.862op/s 0.12% -1.167 1.701 0.07% 986.485op/s 1 200
credit_card/is_card_number_no_luhn/37828224631 execution_time 3.903µs 3.911µs ± 0.002µs 3.911µs ± 0.001µs 3.912µs 3.915µs 3.917µs 3.918µs 0.18% 0.457 1.351 0.06% 0.000µs 1 200
credit_card/is_card_number_no_luhn/37828224631 throughput 255235980.987op/s 255686119.263op/s ± 143340.061op/s 255703567.066op/s ± 81545.919op/s 255775025.209op/s 255888365.824op/s 255932551.073op/s 256244160.098op/s 0.21% -0.452 1.353 0.06% 10135.673op/s 1 200
credit_card/is_card_number_no_luhn/378282246310005 execution_time 49.734µs 49.812µs ± 0.035µs 49.807µs ± 0.022µs 49.831µs 49.873µs 49.902µs 49.938µs 0.26% 0.576 0.405 0.07% 0.002µs 1 200
credit_card/is_card_number_no_luhn/378282246310005 throughput 20024788.895op/s 20075600.999op/s ± 14077.514op/s 20077317.651op/s ± 8715.770op/s 20085746.150op/s 20095750.050op/s 20103844.077op/s 20106802.131op/s 0.15% -0.572 0.397 0.07% 995.431op/s 1 200
credit_card/is_card_number_no_luhn/37828224631000521389798 execution_time 44.566µs 45.170µs ± 0.212µs 45.192µs ± 0.151µs 45.338µs 45.487µs 45.519µs 45.538µs 0.77% -0.387 -0.454 0.47% 0.015µs 1 200
credit_card/is_card_number_no_luhn/37828224631000521389798 throughput 21959905.762op/s 22139059.341op/s ± 104260.096op/s 22128040.727op/s ± 73683.286op/s 22206644.322op/s 22319456.524op/s 22392304.938op/s 22438612.202op/s 1.40% 0.407 -0.426 0.47% 7372.302op/s 1 200
credit_card/is_card_number_no_luhn/x371413321323331 execution_time 6.027µs 6.038µs ± 0.012µs 6.036µs ± 0.003µs 6.038µs 6.043µs 6.109µs 6.110µs 1.24% 4.940 26.429 0.19% 0.001µs 1 200
credit_card/is_card_number_no_luhn/x371413321323331 throughput 163657780.026op/s 165631013.852op/s ± 317842.393op/s 165681402.265op/s ± 75682.781op/s 165758027.742op/s 165840113.337op/s 165895032.505op/s 165926074.276op/s 0.15% -4.916 26.230 0.19% 22474.851op/s 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
credit_card/is_card_number/ execution_time [3.911µs; 3.912µs] or [-0.008%; +0.008%] None None None
credit_card/is_card_number/ throughput [255637574.039op/s; 255678331.011op/s] or [-0.008%; +0.008%] None None None
credit_card/is_card_number/ 3782-8224-6310-005 execution_time [77.444µs; 77.526µs] or [-0.053%; +0.053%] None None None
credit_card/is_card_number/ 3782-8224-6310-005 throughput [12899149.702op/s; 12912707.364op/s] or [-0.053%; +0.053%] None None None
credit_card/is_card_number/ 378282246310005 execution_time [71.152µs; 71.237µs] or [-0.059%; +0.059%] None None None
credit_card/is_card_number/ 378282246310005 throughput [14037956.991op/s; 14054579.291op/s] or [-0.059%; +0.059%] None None None
credit_card/is_card_number/37828224631 execution_time [3.912µs; 3.913µs] or [-0.012%; +0.012%] None None None
credit_card/is_card_number/37828224631 throughput [255531810.299op/s; 255593844.871op/s] or [-0.012%; +0.012%] None None None
credit_card/is_card_number/378282246310005 execution_time [67.794µs; 67.867µs] or [-0.054%; +0.054%] None None None
credit_card/is_card_number/378282246310005 throughput [14734839.197op/s; 14750687.791op/s] or [-0.054%; +0.054%] None None None
credit_card/is_card_number/37828224631000521389798 execution_time [45.138µs; 45.198µs] or [-0.066%; +0.066%] None None None
credit_card/is_card_number/37828224631000521389798 throughput [22125246.984op/s; 22154565.745op/s] or [-0.066%; +0.066%] None None None
credit_card/is_card_number/x371413321323331 execution_time [6.035µs; 6.036µs] or [-0.015%; +0.015%] None None None
credit_card/is_card_number/x371413321323331 throughput [165663413.247op/s; 165711541.256op/s] or [-0.015%; +0.015%] None None None
credit_card/is_card_number_no_luhn/ execution_time [3.912µs; 3.912µs] or [-0.009%; +0.009%] None None None
credit_card/is_card_number_no_luhn/ throughput [255605711.292op/s; 255654008.560op/s] or [-0.009%; +0.009%] None None None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 execution_time [65.577µs; 65.601µs] or [-0.019%; +0.019%] None None None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 throughput [15243571.546op/s; 15249363.996op/s] or [-0.019%; +0.019%] None None None
credit_card/is_card_number_no_luhn/ 378282246310005 execution_time [53.012µs; 53.023µs] or [-0.010%; +0.010%] None None None
credit_card/is_card_number_no_luhn/ 378282246310005 throughput [18859689.807op/s; 18863556.757op/s] or [-0.010%; +0.010%] None None None
credit_card/is_card_number_no_luhn/37828224631 execution_time [3.911µs; 3.911µs] or [-0.008%; +0.008%] None None None
credit_card/is_card_number_no_luhn/37828224631 throughput [255666253.709op/s; 255705984.817op/s] or [-0.008%; +0.008%] None None None
credit_card/is_card_number_no_luhn/378282246310005 execution_time [49.807µs; 49.817µs] or [-0.010%; +0.010%] None None None
credit_card/is_card_number_no_luhn/378282246310005 throughput [20073649.991op/s; 20077552.007op/s] or [-0.010%; +0.010%] None None None
credit_card/is_card_number_no_luhn/37828224631000521389798 execution_time [45.141µs; 45.199µs] or [-0.065%; +0.065%] None None None
credit_card/is_card_number_no_luhn/37828224631000521389798 throughput [22124609.895op/s; 22153508.788op/s] or [-0.065%; +0.065%] None None None
credit_card/is_card_number_no_luhn/x371413321323331 execution_time [6.036µs; 6.039µs] or [-0.027%; +0.027%] None None None
credit_card/is_card_number_no_luhn/x371413321323331 throughput [165586963.953op/s; 165675063.751op/s] or [-0.027%; +0.027%] None None None

Group 3

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
benching serializing traces from their internal representation to msgpack execution_time 14.586ms 14.649ms ± 0.034ms 14.646ms ± 0.014ms 14.660ms 14.708ms 14.764ms 14.849ms 1.39% 2.030 7.794 0.23% 0.002ms 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
benching serializing traces from their internal representation to msgpack execution_time [14.645ms; 14.654ms] or [-0.032%; +0.032%] None None None

Group 4

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
normalization/normalize_trace/test_trace execution_time 242.131ns 254.630ns ± 15.105ns 247.317ns ± 2.944ns 261.643ns 289.979ns 302.192ns 304.172ns 22.99% 1.713 2.064 5.92% 1.068ns 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
normalization/normalize_trace/test_trace execution_time [252.536ns; 256.723ns] or [-0.822%; +0.822%] None None None

Group 5

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
profile_add_sample_frames_x1000 execution_time 3.902ms 3.914ms ± 0.007ms 3.913ms ± 0.002ms 3.915ms 3.918ms 3.922ms 4.003ms 2.30% 10.398 130.515 0.18% 0.000ms 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
profile_add_sample_frames_x1000 execution_time [3.913ms; 3.915ms] or [-0.025%; +0.025%] None None None

Group 6

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
sql/obfuscate_sql_string execution_time 89.245µs 89.428µs ± 0.257µs 89.404µs ± 0.046µs 89.447µs 89.547µs 89.822µs 92.832µs 3.83% 11.713 151.842 0.29% 0.018µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
sql/obfuscate_sql_string execution_time [89.393µs; 89.464µs] or [-0.040%; +0.040%] None None None

Group 7

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
write only interface execution_time 1.151µs 3.255µs ± 1.416µs 3.047µs ± 0.028µs 3.074µs 3.745µs 13.843µs 14.936µs 390.24% 7.295 54.698 43.38% 0.100µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
write only interface execution_time [3.059µs; 3.451µs] or [-6.028%; +6.028%] None None None

Group 8

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
ip_address/quantize_peer_ip_address_benchmark execution_time 5.047µs 5.114µs ± 0.039µs 5.101µs ± 0.028µs 5.140µs 5.177µs 5.206µs 5.213µs 2.21% 0.255 -0.690 0.76% 0.003µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
ip_address/quantize_peer_ip_address_benchmark execution_time [5.109µs; 5.120µs] or [-0.105%; +0.105%] None None None

Group 9

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
receiver_entry_point/report/2597 execution_time 12.797ms 13.070ms ± 0.097ms 13.076ms ± 0.046ms 13.120ms 13.203ms 13.347ms 13.392ms 2.41% -0.131 1.403 0.74% 0.007ms 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
receiver_entry_point/report/2597 execution_time [13.056ms; 13.083ms] or [-0.103%; +0.103%] None None None

Group 10

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
redis/obfuscate_redis_string execution_time 34.157µs 34.574µs ± 0.695µs 34.263µs ± 0.061µs 34.381µs 36.016µs 36.070µs 37.774µs 10.25% 1.865 2.318 2.01% 0.049µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
redis/obfuscate_redis_string execution_time [34.477µs; 34.670µs] or [-0.279%; +0.279%] None None None

Group 11

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
tags/replace_trace_tags execution_time 2.412µs 2.429µs ± 0.012µs 2.427µs ± 0.007µs 2.434µs 2.456µs 2.467µs 2.469µs 1.75% 1.213 1.455 0.50% 0.001µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
tags/replace_trace_tags execution_time [2.428µs; 2.431µs] or [-0.069%; +0.069%] None None None

Group 12

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
two way interface execution_time 18.334µs 26.777µs ± 10.110µs 18.718µs ± 0.270µs 35.294µs 43.485µs 50.104µs 79.442µs 324.42% 1.143 2.317 37.66% 0.715µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
two way interface execution_time [25.376µs; 28.178µs] or [-5.233%; +5.233%] None None None

Group 13

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo... execution_time 204.937µs 205.737µs ± 0.515µs 205.633µs ± 0.318µs 206.009µs 206.756µs 207.088µs 207.931µs 1.12% 1.043 1.203 0.25% 0.036µs 1 200
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo... throughput 4809293.948op/s 4860596.574op/s ± 12134.905op/s 4863023.737op/s ± 7507.571op/s 4869738.606op/s 4876181.271op/s 4878866.791op/s 4879554.784op/s 0.34% -1.027 1.146 0.25% 858.067op/s 1 200
normalization/normalize_name/normalize_name/bad-name execution_time 18.565µs 18.642µs ± 0.052µs 18.634µs ± 0.025µs 18.662µs 18.732µs 18.805µs 18.971µs 1.81% 2.296 10.018 0.28% 0.004µs 1 200
normalization/normalize_name/normalize_name/bad-name throughput 52712646.389op/s 53642737.395op/s ± 149992.718op/s 53666673.111op/s ± 73002.485op/s 53732208.500op/s 53825152.918op/s 53854262.149op/s 53865168.180op/s 0.37% -2.240 9.608 0.28% 10606.087op/s 1 200
normalization/normalize_name/normalize_name/good execution_time 10.775µs 10.849µs ± 0.036µs 10.848µs ± 0.025µs 10.870µs 10.909µs 10.935µs 11.013µs 1.52% 0.691 1.234 0.33% 0.003µs 1 200
normalization/normalize_name/normalize_name/good throughput 90803936.141op/s 92174873.785op/s ± 306112.801op/s 92181616.220op/s ± 215761.934op/s 92422788.760op/s 92606133.948op/s 92711830.321op/s 92803648.183op/s 0.67% -0.664 1.132 0.33% 21645.444op/s 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo... execution_time [205.666µs; 205.809µs] or [-0.035%; +0.035%] None None None
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo... throughput [4858914.793op/s; 4862278.355op/s] or [-0.035%; +0.035%] None None None
normalization/normalize_name/normalize_name/bad-name execution_time [18.635µs; 18.649µs] or [-0.039%; +0.039%] None None None
normalization/normalize_name/normalize_name/bad-name throughput [53621949.847op/s; 53663524.944op/s] or [-0.039%; +0.039%] None None None
normalization/normalize_name/normalize_name/good execution_time [10.844µs; 10.854µs] or [-0.046%; +0.046%] None None None
normalization/normalize_name/normalize_name/good throughput [92132449.494op/s; 92217298.075op/s] or [-0.046%; +0.046%] None None None

Group 14

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
benching string interning on wordpress profile execution_time 161.853µs 162.510µs ± 0.376µs 162.460µs ± 0.116µs 162.584µs 162.895µs 163.909µs 165.896µs 2.12% 5.326 40.707 0.23% 0.027µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
benching string interning on wordpress profile execution_time [162.458µs; 162.562µs] or [-0.032%; +0.032%] None None None

Group 15

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
sdk_test_data/rules-based execution_time 143.642µs 145.648µs ± 1.709µs 145.340µs ± 0.496µs 145.975µs 147.788µs 152.598µs 162.475µs 11.79% 5.874 49.383 1.17% 0.121µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
sdk_test_data/rules-based execution_time [145.412µs; 145.885µs] or [-0.163%; +0.163%] None None None

Group 16

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
profile_add_sample2_frames_x1000 execution_time 551.960µs 552.889µs ± 0.588µs 552.804µs ± 0.265µs 553.115µs 553.742µs 554.111µs 558.588µs 1.05% 4.732 42.372 0.11% 0.042µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
profile_add_sample2_frames_x1000 execution_time [552.807µs; 552.970µs] or [-0.015%; +0.015%] None None None

Group 17

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000... execution_time 535.251µs 537.797µs ± 2.089µs 537.339µs ± 1.185µs 538.640µs 541.535µs 543.661µs 549.797µs 2.32% 1.973 6.473 0.39% 0.148µs 1 200
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000... throughput 1818852.167op/s 1859464.290op/s ± 7169.534op/s 1861023.882op/s ± 4103.679op/s 1864929.160op/s 1866689.256op/s 1867820.022op/s 1868282.768op/s 0.39% -1.920 6.114 0.38% 506.963op/s 1 200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて execution_time 380.237µs 381.210µs ± 0.641µs 381.015µs ± 0.277µs 381.445µs 382.572µs 382.675µs 382.762µs 0.46% 0.986 -0.070 0.17% 0.045µs 1 200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて throughput 2612590.788op/s 2623232.042op/s ± 4403.424op/s 2624571.091op/s ± 1907.116op/s 2626112.800op/s 2628263.908op/s 2629814.619op/s 2629939.325op/s 0.20% -0.981 -0.077 0.17% 311.369op/s 1 200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters execution_time 189.550µs 189.976µs ± 0.213µs 189.945µs ± 0.106µs 190.072µs 190.357µs 190.555µs 191.317µs 0.72% 1.813 7.954 0.11% 0.015µs 1 200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters throughput 5226921.433op/s 5263840.973op/s ± 5901.878op/s 5264669.800op/s ± 2930.367op/s 5267222.933op/s 5270923.758op/s 5275039.348op/s 5275644.298op/s 0.21% -1.791 7.802 0.11% 417.326op/s 1 200
normalization/normalize_service/normalize_service/[empty string] execution_time 36.455µs 36.583µs ± 0.050µs 36.582µs ± 0.035µs 36.618µs 36.669µs 36.694µs 36.696µs 0.31% 0.080 -0.511 0.14% 0.004µs 1 200
normalization/normalize_service/normalize_service/[empty string] throughput 27250913.191op/s 27335518.763op/s ± 37329.871op/s 27335667.014op/s ± 26491.168op/s 27362359.859op/s 27392986.970op/s 27414254.616op/s 27431367.785op/s 0.35% -0.074 -0.511 0.14% 2639.620op/s 1 200
normalization/normalize_service/normalize_service/test_ASCII execution_time 45.932µs 46.039µs ± 0.061µs 46.030µs ± 0.035µs 46.069µs 46.148µs 46.258µs 46.311µs 0.61% 1.143 2.565 0.13% 0.004µs 1 200
normalization/normalize_service/normalize_service/test_ASCII throughput 21593206.502op/s 21720666.532op/s ± 28527.943op/s 21724891.688op/s ± 16363.095op/s 21739390.614op/s 21761645.484op/s 21770297.354op/s 21771142.675op/s 0.21% -1.130 2.516 0.13% 2017.230op/s 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000... execution_time [537.508µs; 538.087µs] or [-0.054%; +0.054%] None None None
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000... throughput [1858470.661op/s; 1860457.918op/s] or [-0.053%; +0.053%] None None None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて execution_time [381.121µs; 381.299µs] or [-0.023%; +0.023%] None None None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて throughput [2622621.770op/s; 2623842.314op/s] or [-0.023%; +0.023%] None None None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters execution_time [189.946µs; 190.005µs] or [-0.016%; +0.016%] None None None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters throughput [5263023.030op/s; 5264658.917op/s] or [-0.016%; +0.016%] None None None
normalization/normalize_service/normalize_service/[empty string] execution_time [36.576µs; 36.589µs] or [-0.019%; +0.019%] None None None
normalization/normalize_service/normalize_service/[empty string] throughput [27330345.202op/s; 27340692.325op/s] or [-0.019%; +0.019%] None None None
normalization/normalize_service/normalize_service/test_ASCII execution_time [46.031µs; 46.048µs] or [-0.018%; +0.018%] None None None
normalization/normalize_service/normalize_service/test_ASCII throughput [21716712.834op/s; 21724620.231op/s] or [-0.018%; +0.018%] None None None

Group 18

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
single_flag_killswitch/rules-based execution_time 188.977ns 191.496ns ± 2.297ns 191.290ns ± 1.566ns 192.572ns 195.857ns 198.647ns 204.481ns 6.90% 1.629 4.855 1.20% 0.162ns 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
single_flag_killswitch/rules-based execution_time [191.178ns; 191.815ns] or [-0.166%; +0.166%] None None None

Group 19

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz b7d89dd 1769443320 leiyks/sidecar-threaded-fallback
scenario metric min mean ± sd median ± mad p75 p95 p99 max peak_to_median_ratio skewness kurtosis cv sem runs sample_size
concentrator/add_spans_to_concentrator execution_time 10.626ms 10.654ms ± 0.014ms 10.652ms ± 0.008ms 10.661ms 10.677ms 10.683ms 10.742ms 0.84% 1.940 8.999 0.13% 0.001ms 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
concentrator/add_spans_to_concentrator execution_time [10.652ms; 10.656ms] or [-0.019%; +0.019%] None None None

Baseline

Omitted due to size.

@Leiyks Leiyks force-pushed the leiyks/sidecar-threaded-fallback branch from 917aceb to d87edf1 Compare January 15, 2026 12:56
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Artifact Size Benchmark Report

aarch64-alpine-linux-musl
Artifact Baseline Commit Change
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.so 8.38 MB 8.38 MB 0% (0 B) 👌
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.a 91.22 MB 91.22 MB 0% (0 B) 👌
aarch64-apple-darwin
Artifact Baseline Commit Change
/aarch64-apple-darwin/lib/libdatadog_profiling.a 62.36 MB 62.36 MB 0% (0 B) 👌
/aarch64-apple-darwin/lib/libdatadog_profiling.dylib 9.41 MB 9.41 MB 0% (0 B) 👌
aarch64-unknown-linux-gnu
Artifact Baseline Commit Change
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.so 10.67 MB 10.67 MB 0% (0 B) 👌
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.a 105.54 MB 105.54 MB 0% (0 B) 👌
libdatadog-x64-windows
Artifact Baseline Commit Change
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.dll 25.08 MB 25.08 MB 0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.lib 73.49 KB 73.49 KB 0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.pdb 165.91 MB 165.91 MB 0% (0 B) 👌
/libdatadog-x64-windows/debug/static/datadog_profiling_ffi.lib 827.93 MB 827.93 MB 0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.dll 9.54 MB 9.54 MB 0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.lib 73.49 KB 73.49 KB 0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.pdb 22.94 MB 22.94 MB 0% (0 B) 👌
/libdatadog-x64-windows/release/static/datadog_profiling_ffi.lib 47.90 MB 47.90 MB 0% (0 B) 👌
libdatadog-x86-windows
Artifact Baseline Commit Change
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.dll 21.15 MB 21.15 MB 0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.lib 74.62 KB 74.62 KB 0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.pdb 169.87 MB 169.88 MB +0% (+8.00 KB) 👌
/libdatadog-x86-windows/debug/static/datadog_profiling_ffi.lib 814.90 MB 814.90 MB 0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.dll 7.22 MB 7.22 MB 0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.lib 74.62 KB 74.62 KB 0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.pdb 24.51 MB 24.51 MB 0% (0 B) 👌
/libdatadog-x86-windows/release/static/datadog_profiling_ffi.lib 43.62 MB 43.62 MB 0% (0 B) 👌
x86_64-alpine-linux-musl
Artifact Baseline Commit Change
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.a 79.72 MB 79.72 MB 0% (0 B) 👌
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.so 9.85 MB 9.85 MB 0% (0 B) 👌
x86_64-apple-darwin
Artifact Baseline Commit Change
/x86_64-apple-darwin/lib/libdatadog_profiling.a 64.25 MB 64.25 MB 0% (0 B) 👌
/x86_64-apple-darwin/lib/libdatadog_profiling.dylib 10.44 MB 10.44 MB 0% (0 B) 👌
x86_64-unknown-linux-gnu
Artifact Baseline Commit Change
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.a 99.56 MB 99.56 MB 0% (0 B) 👌
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.so 11.41 MB 11.41 MB 0% (0 B) 👌

@Leiyks Leiyks force-pushed the leiyks/sidecar-threaded-fallback branch from d87edf1 to 34adc5d Compare January 15, 2026 13:47
bwoebi
bwoebi reviewed Jan 19, 2026
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bwoebi
bwoebi reviewed Jan 19, 2026
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bwoebi
bwoebi reviewed Jan 19, 2026
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@Leiyks Leiyks force-pushed the leiyks/sidecar-threaded-fallback branch 5 times, most recently from 89dffbf to 31a48ff Compare January 23, 2026 14:55
Leiyks added 2 commits January 26, 2026 13:32
@Leiyks
feat(sidecar): implement thread listener module
ee1efd3 
Signed-off-by: Alexandre Rulleau <alexandre.rulleau@datadoghq.com>
@Leiyks
feat(sidecar): apply feedbacks
43a7e74 
Signed-off-by: Alexandre Rulleau <alexandre.rulleau@datadoghq.com>
@Leiyks Leiyks force-pushed the leiyks/sidecar-threaded-fallback branch from 31a48ff to 801ac3e Compare January 26, 2026 12:35
@Leiyks Leiyks marked this pull request as ready for review January 26, 2026 12:36
@Leiyks Leiyks requested review from a team as code owners January 26, 2026 12:36
@Leiyks
feat(sidecar): support threaded connection for windows
b7d89dd 
Signed-off-by: Alexandre Rulleau <alexandre.rulleau@datadoghq.com>
@Leiyks Leiyks force-pushed the leiyks/sidecar-threaded-fallback branch from 801ac3e to b7d89dd Compare January 26, 2026 16:02
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