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Change Buffer #1453

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@bengl bengl commented Jan 15, 2026

What does this PR do?

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

Motivation

What inspired you to submit this pull request?

Additional Notes

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How to test the change?

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Benchmarks

Comparison

Benchmark execution time: 2026-01-16 21:15:34

Comparing candidate commit e39f146 in PR branch bengl/change-buffer with baseline commit 51c8cb4 in branch main.

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

scenario:redis/obfuscate_redis_string

  • 🟥 execution_time [+1.434µs; +1.736µs] or [+4.102%; +4.967%]

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 e39f146 1768597075 bengl/change-buffer
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 160.759µs 161.750µs ± 0.512µs 161.671µs ± 0.150µs 161.870µs 162.289µs 162.661µs 167.382µs 3.53% 7.022 72.526 0.32% 0.036µs 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 [161.679µs; 161.821µs] or [-0.044%; +0.044%] None None None

Group 2

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 9.852ms 10.121ms ± 0.071ms 10.125ms ± 0.026ms 10.150ms 10.219ms 10.267ms 10.324ms 1.96% -1.271 4.191 0.70% 0.005ms 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 [10.111ms; 10.131ms] or [-0.097%; +0.097%] None None None

Group 3

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 3.901ms 3.905ms ± 0.006ms 3.905ms ± 0.002ms 3.906ms 3.908ms 3.913ms 3.986ms 2.09% 11.323 145.083 0.16% 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 [3.904ms; 3.906ms] or [-0.022%; +0.022%] None None None

Group 4

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 4.949µs 5.033µs ± 0.035µs 5.030µs ± 0.022µs 5.053µs 5.095µs 5.098µs 5.100µs 1.40% 0.044 -0.535 0.69% 0.002µs 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 [5.028µs; 5.037µs] or [-0.096%; +0.096%] None None None

Group 5

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 90.221µs 90.448µs ± 0.164µs 90.420µs ± 0.047µs 90.485µs 90.589µs 90.786µs 92.062µs 1.82% 6.775 58.442 0.18% 0.012µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
sql/obfuscate_sql_string execution_time [90.425µs; 90.471µs] 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 e39f146 1768597075 bengl/change-buffer
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 10.701ms 10.725ms ± 0.013ms 10.722ms ± 0.007ms 10.732ms 10.749ms 10.761ms 10.791ms 0.64% 1.419 3.841 0.12% 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 [10.723ms; 10.727ms] or [-0.017%; +0.017%] None None None

Group 7

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 186.655ns 189.266ns ± 2.004ns 188.995ns ± 1.406ns 190.350ns 192.892ns 195.338ns 198.331ns 4.94% 1.254 2.024 1.06% 0.142ns 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 [188.988ns; 189.544ns] or [-0.147%; +0.147%] None None None

Group 8

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 3.895µs 3.915µs ± 0.003µs 3.915µs ± 0.002µs 3.917µs 3.920µs 3.921µs 3.921µs 0.17% -1.477 10.541 0.07% 0.000µs 1 200
credit_card/is_card_number/ throughput 255013256.198op/s 255421031.703op/s ± 187782.162op/s 255436715.555op/s ± 108257.979op/s 255515209.559op/s 255666358.265op/s 255753502.647op/s 256738351.766op/s 0.51% 1.500 10.724 0.07% 13278.204op/s 1 200
credit_card/is_card_number/ 3782-8224-6310-005 execution_time 76.519µs 78.280µs ± 0.819µs 78.246µs ± 0.578µs 78.840µs 79.656µs 80.382µs 80.812µs 3.28% 0.319 -0.112 1.04% 0.058µs 1 200
credit_card/is_card_number/ 3782-8224-6310-005 throughput 12374469.227op/s 12775982.789op/s ± 133238.268op/s 12780171.572op/s ± 94741.046op/s 12872558.756op/s 12993190.421op/s 13032039.304op/s 13068693.648op/s 2.26% -0.263 -0.180 1.04% 9421.368op/s 1 200
credit_card/is_card_number/ 378282246310005 execution_time 70.636µs 71.899µs ± 0.658µs 71.866µs ± 0.422µs 72.320µs 73.009µs 73.273µs 74.183µs 3.22% 0.259 -0.178 0.91% 0.047µs 1 200
credit_card/is_card_number/ 378282246310005 throughput 13480155.175op/s 13909593.446op/s ± 127033.457op/s 13914749.644op/s ± 82184.752op/s 13993411.623op/s 14123589.797op/s 14138067.761op/s 14157114.434op/s 1.74% -0.212 -0.243 0.91% 8982.622op/s 1 200
credit_card/is_card_number/37828224631 execution_time 3.896µs 3.915µs ± 0.003µs 3.915µs ± 0.002µs 3.917µs 3.920µs 3.921µs 3.922µs 0.18% -0.925 7.465 0.07% 0.000µs 1 200
credit_card/is_card_number/37828224631 throughput 254988340.396op/s 255425578.140op/s ± 187741.895op/s 255450876.811op/s ± 109719.499op/s 255549378.568op/s 255650729.113op/s 255712966.804op/s 256642650.071op/s 0.47% 0.944 7.596 0.07% 13275.357op/s 1 200
credit_card/is_card_number/378282246310005 execution_time 67.403µs 68.649µs ± 0.679µs 68.593µs ± 0.508µs 69.109µs 69.749µs 70.053µs 70.683µs 3.05% 0.251 -0.613 0.99% 0.048µs 1 200
credit_card/is_card_number/378282246310005 throughput 14147607.610op/s 14568206.985op/s ± 143825.728op/s 14578716.532op/s ± 107860.602op/s 14684780.038op/s 14798164.365op/s 14819940.956op/s 14836098.708op/s 1.77% -0.212 -0.650 0.98% 10170.015op/s 1 200
credit_card/is_card_number/37828224631000521389798 execution_time 52.746µs 52.929µs ± 0.054µs 52.923µs ± 0.032µs 52.962µs 53.018µs 53.065µs 53.169µs 0.47% 0.351 2.334 0.10% 0.004µs 1 200
credit_card/is_card_number/37828224631000521389798 throughput 18807955.745op/s 18893428.158op/s ± 19341.991op/s 18895413.138op/s ± 11286.451op/s 18904848.149op/s 18920698.774op/s 18936033.042op/s 18958726.551op/s 0.34% -0.338 2.318 0.10% 1367.685op/s 1 200
credit_card/is_card_number/x371413321323331 execution_time 6.428µs 6.437µs ± 0.005µs 6.436µs ± 0.004µs 6.441µs 6.445µs 6.448µs 6.449µs 0.20% 0.306 -0.684 0.07% 0.000µs 1 200
credit_card/is_card_number/x371413321323331 throughput 155058728.618op/s 155351293.882op/s ± 111385.202op/s 155367926.867op/s ± 85194.655op/s 155434656.932op/s 155514880.356op/s 155557999.476op/s 155571113.780op/s 0.13% -0.304 -0.686 0.07% 7876.123op/s 1 200
credit_card/is_card_number_no_luhn/ execution_time 3.893µs 3.915µs ± 0.004µs 3.914µs ± 0.002µs 3.917µs 3.920µs 3.921µs 3.953µs 1.00% 3.532 42.893 0.10% 0.000µs 1 200
credit_card/is_card_number_no_luhn/ throughput 252947061.143op/s 255432287.600op/s ± 263729.325op/s 255468404.775op/s ± 111597.772op/s 255559942.798op/s 255679645.934op/s 255753189.286op/s 256902041.128op/s 0.56% -3.432 42.094 0.10% 18648.479op/s 1 200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 execution_time 64.788µs 65.150µs ± 0.157µs 65.091µs ± 0.075µs 65.258µs 65.434µs 65.603µs 65.721µs 0.97% 0.857 0.740 0.24% 0.011µs 1 200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 throughput 15215920.833op/s 15349245.632op/s ± 36948.577op/s 15363131.558op/s ± 17690.865op/s 15374316.819op/s 15392635.169op/s 15425767.421op/s 15434949.356op/s 0.47% -0.843 0.709 0.24% 2612.659op/s 1 200
credit_card/is_card_number_no_luhn/ 378282246310005 execution_time 58.502µs 58.976µs ± 0.241µs 58.950µs ± 0.156µs 59.121µs 59.400µs 59.548µs 59.958µs 1.71% 0.700 0.644 0.41% 0.017µs 1 200
credit_card/is_card_number_no_luhn/ 378282246310005 throughput 16678420.047op/s 16956412.194op/s ± 69213.641op/s 16963526.748op/s ± 44920.500op/s 17005960.167op/s 17051127.836op/s 17073969.429op/s 17093461.922op/s 0.77% -0.674 0.570 0.41% 4894.143op/s 1 200
credit_card/is_card_number_no_luhn/37828224631 execution_time 3.895µs 3.915µs ± 0.003µs 3.914µs ± 0.002µs 3.917µs 3.920µs 3.922µs 3.926µs 0.30% -0.427 6.333 0.08% 0.000µs 1 200
credit_card/is_card_number_no_luhn/37828224631 throughput 254698794.004op/s 255441223.640op/s ± 211821.282op/s 255469381.997op/s ± 122130.717op/s 255575381.959op/s 255701561.870op/s 255746143.178op/s 256727001.029op/s 0.49% 0.447 6.436 0.08% 14978.027op/s 1 200
credit_card/is_card_number_no_luhn/378282246310005 execution_time 55.314µs 55.690µs ± 0.220µs 55.632µs ± 0.123µs 55.808µs 56.121µs 56.338µs 56.527µs 1.61% 1.140 1.232 0.39% 0.016µs 1 200
credit_card/is_card_number_no_luhn/378282246310005 throughput 17690605.463op/s 17956667.192op/s ± 70708.485op/s 17975276.805op/s ± 39763.955op/s 18010016.271op/s 18044950.876op/s 18055774.587op/s 18078469.597op/s 0.57% -1.118 1.160 0.39% 4999.845op/s 1 200
credit_card/is_card_number_no_luhn/37828224631000521389798 execution_time 53.061µs 53.131µs ± 0.048µs 53.124µs ± 0.029µs 53.160µs 53.188µs 53.223µs 53.517µs 0.74% 3.063 20.540 0.09% 0.003µs 1 200
credit_card/is_card_number_no_luhn/37828224631000521389798 throughput 18685763.979op/s 18821425.379op/s ± 17059.614op/s 18824038.417op/s ± 10375.330op/s 18832874.457op/s 18842195.348op/s 18844948.347op/s 18846248.614op/s 0.12% -3.027 20.180 0.09% 1206.297op/s 1 200
credit_card/is_card_number_no_luhn/x371413321323331 execution_time 6.428µs 6.437µs ± 0.006µs 6.436µs ± 0.003µs 6.439µs 6.445µs 6.448µs 6.493µs 0.89% 4.499 39.334 0.09% 0.000µs 1 200
credit_card/is_card_number_no_luhn/x371413321323331 throughput 154010990.280op/s 155360687.883op/s ± 142375.891op/s 155378938.392op/s ± 75769.918op/s 155450987.925op/s 155508950.351op/s 155541238.604op/s 155557860.116op/s 0.12% -4.441 38.598 0.09% 10067.496op/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 [3.915µs; 3.916µs] or [-0.010%; +0.010%] None None None
credit_card/is_card_number/ throughput [255395006.902op/s; 255447056.505op/s] or [-0.010%; +0.010%] None None None
credit_card/is_card_number/ 3782-8224-6310-005 execution_time [78.167µs; 78.394µs] or [-0.145%; +0.145%] None None None
credit_card/is_card_number/ 3782-8224-6310-005 throughput [12757517.246op/s; 12794448.331op/s] or [-0.145%; +0.145%] None None None
credit_card/is_card_number/ 378282246310005 execution_time [71.808µs; 71.990µs] or [-0.127%; +0.127%] None None None
credit_card/is_card_number/ 378282246310005 throughput [13891987.831op/s; 13927199.061op/s] or [-0.127%; +0.127%] None None None
credit_card/is_card_number/37828224631 execution_time [3.915µs; 3.915µs] or [-0.010%; +0.010%] None None None
credit_card/is_card_number/37828224631 throughput [255399558.919op/s; 255451597.361op/s] or [-0.010%; +0.010%] None None None
credit_card/is_card_number/378282246310005 execution_time [68.555µs; 68.743µs] or [-0.137%; +0.137%] None None None
credit_card/is_card_number/378282246310005 throughput [14548274.122op/s; 14588139.848op/s] or [-0.137%; +0.137%] None None None
credit_card/is_card_number/37828224631000521389798 execution_time [52.921µs; 52.936µs] or [-0.014%; +0.014%] None None None
credit_card/is_card_number/37828224631000521389798 throughput [18890747.544op/s; 18896108.772op/s] or [-0.014%; +0.014%] None None None
credit_card/is_card_number/x371413321323331 execution_time [6.436µs; 6.438µs] or [-0.010%; +0.010%] None None None
credit_card/is_card_number/x371413321323331 throughput [155335856.964op/s; 155366730.800op/s] or [-0.010%; +0.010%] None None None
credit_card/is_card_number_no_luhn/ execution_time [3.914µs; 3.915µs] or [-0.014%; +0.014%] None None None
credit_card/is_card_number_no_luhn/ throughput [255395737.252op/s; 255468837.948op/s] or [-0.014%; +0.014%] None None None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 execution_time [65.128µs; 65.172µs] or [-0.033%; +0.033%] None None None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005 throughput [15344124.914op/s; 15354366.349op/s] or [-0.033%; +0.033%] None None None
credit_card/is_card_number_no_luhn/ 378282246310005 execution_time [58.942µs; 59.009µs] or [-0.057%; +0.057%] None None None
credit_card/is_card_number_no_luhn/ 378282246310005 throughput [16946819.849op/s; 16966004.539op/s] or [-0.057%; +0.057%] None None None
credit_card/is_card_number_no_luhn/37828224631 execution_time [3.914µs; 3.915µs] or [-0.011%; +0.011%] None None None
credit_card/is_card_number_no_luhn/37828224631 throughput [255411867.247op/s; 255470580.032op/s] or [-0.011%; +0.011%] None None None
credit_card/is_card_number_no_luhn/378282246310005 execution_time [55.660µs; 55.721µs] or [-0.055%; +0.055%] None None None
credit_card/is_card_number_no_luhn/378282246310005 throughput [17946867.676op/s; 17966466.708op/s] or [-0.055%; +0.055%] None None None
credit_card/is_card_number_no_luhn/37828224631000521389798 execution_time [53.124µs; 53.138µs] or [-0.013%; +0.013%] None None None
credit_card/is_card_number_no_luhn/37828224631000521389798 throughput [18819061.081op/s; 18823789.677op/s] or [-0.013%; +0.013%] None None None
credit_card/is_card_number_no_luhn/x371413321323331 execution_time [6.436µs; 6.437µs] or [-0.013%; +0.013%] None None None
credit_card/is_card_number_no_luhn/x371413321323331 throughput [155340955.954op/s; 155380419.812op/s] or [-0.013%; +0.013%] None None None

Group 9

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 36.162µs 36.531µs ± 0.505µs 36.305µs ± 0.060µs 36.421µs 37.528µs 37.575µs 39.536µs 8.90% 2.215 5.813 1.38% 0.036µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
redis/obfuscate_redis_string execution_time [36.461µs; 36.601µs] or [-0.191%; +0.191%] None None None

Group 10

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 13.835ms 13.890ms ± 0.031ms 13.885ms ± 0.013ms 13.898ms 13.956ms 14.010ms 14.043ms 1.14% 2.110 5.930 0.22% 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 [13.886ms; 13.895ms] or [-0.031%; +0.031%] None None None

Group 11

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 1.182µs 3.163µs ± 1.407µs 3.009µs ± 0.021µs 3.027µs 3.094µs 13.768µs 14.753µs 390.30% 7.496 56.717 44.36% 0.099µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
write only interface execution_time [2.968µs; 3.358µs] or [-6.164%; +6.164%] None None None

Group 12

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 185.462µs 185.979µs ± 0.251µs 185.939µs ± 0.160µs 186.131µs 186.435µs 186.683µs 186.814µs 0.47% 0.751 0.836 0.13% 0.018µs 1 200
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo... throughput 5352918.592op/s 5376951.072op/s ± 7252.864op/s 5378096.666op/s ± 4620.977op/s 5381573.036op/s 5387988.115op/s 5390379.475op/s 5391940.855op/s 0.26% -0.741 0.816 0.13% 512.855op/s 1 200
normalization/normalize_name/normalize_name/bad-name execution_time 17.799µs 17.880µs ± 0.051µs 17.876µs ± 0.022µs 17.896µs 17.938µs 17.991µs 18.412µs 3.00% 5.867 58.540 0.28% 0.004µs 1 200
normalization/normalize_name/normalize_name/bad-name throughput 54311958.763op/s 55928499.871op/s ± 156343.253op/s 55939861.360op/s ± 68277.922op/s 56011479.064op/s 56099141.073op/s 56163518.318op/s 56182719.423op/s 0.43% -5.649 55.533 0.28% 11055.137op/s 1 200
normalization/normalize_name/normalize_name/good execution_time 10.432µs 10.523µs ± 0.033µs 10.523µs ± 0.020µs 10.542µs 10.582µs 10.596µs 10.597µs 0.70% -0.026 0.039 0.31% 0.002µs 1 200
normalization/normalize_name/normalize_name/good throughput 94370340.915op/s 95031097.992op/s ± 297641.932op/s 95026832.388op/s ± 184959.507op/s 95226430.037op/s 95547584.672op/s 95761887.590op/s 95857983.836op/s 0.87% 0.046 0.049 0.31% 21046.463op/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 [185.945µs; 186.014µs] or [-0.019%; +0.019%] None None None
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo... throughput [5375945.895op/s; 5377956.249op/s] or [-0.019%; +0.019%] None None None
normalization/normalize_name/normalize_name/bad-name execution_time [17.873µs; 17.887µs] or [-0.039%; +0.039%] None None None
normalization/normalize_name/normalize_name/bad-name throughput [55906832.200op/s; 55950167.542op/s] or [-0.039%; +0.039%] None None None
normalization/normalize_name/normalize_name/good execution_time [10.518µs; 10.528µs] or [-0.043%; +0.043%] None None None
normalization/normalize_name/normalize_name/good throughput [94989847.683op/s; 95072348.301op/s] or [-0.043%; +0.043%] None None None

Group 13

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 144.880µs 146.773µs ± 1.911µs 146.415µs ± 0.465µs 146.931µs 148.637µs 153.888µs 166.418µs 13.66% 6.630 58.912 1.30% 0.135µs 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 [146.508µs; 147.038µs] or [-0.180%; +0.180%] None None None

Group 14

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 494.791µs 495.491µs ± 0.466µs 495.436µs ± 0.238µs 495.706µs 496.106µs 496.404µs 499.738µs 0.87% 3.942 32.865 0.09% 0.033µs 1 200
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000... throughput 2001048.549op/s 2018203.255op/s ± 1892.871op/s 2018425.534op/s ± 968.276op/s 2019329.697op/s 2020436.536op/s 2021031.605op/s 2021055.128op/s 0.13% -3.888 32.223 0.09% 133.846op/s 1 200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて execution_time 370.273µs 370.889µs ± 0.297µs 370.853µs ± 0.212µs 371.077µs 371.395µs 371.557µs 371.952µs 0.30% 0.559 -0.106 0.08% 0.021µs 1 200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて throughput 2688518.006op/s 2696224.559op/s ± 2159.160op/s 2696485.893op/s ± 1542.974op/s 2697993.262op/s 2699058.910op/s 2699914.428op/s 2700711.285op/s 0.16% -0.556 -0.114 0.08% 152.676op/s 1 200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters execution_time 167.328µs 167.629µs ± 0.325µs 167.584µs ± 0.086µs 167.685µs 167.894µs 168.086µs 171.733µs 2.48% 10.191 125.758 0.19% 0.023µs 1 200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters throughput 5822982.418op/s 5965573.290op/s ± 11339.957op/s 5967155.113op/s ± 3046.814op/s 5969856.045op/s 5972812.826op/s 5975309.400op/s 5976301.878op/s 0.15% -10.053 123.393 0.19% 801.856op/s 1 200
normalization/normalize_service/normalize_service/[empty string] execution_time 37.112µs 37.261µs ± 0.063µs 37.252µs ± 0.039µs 37.299µs 37.382µs 37.414µs 37.459µs 0.56% 0.441 0.062 0.17% 0.004µs 1 200
normalization/normalize_service/normalize_service/[empty string] throughput 26695633.250op/s 26838100.663op/s ± 45697.211op/s 26844291.114op/s ± 27804.078op/s 26866789.158op/s 26905823.885op/s 26932215.078op/s 26945653.453op/s 0.38% -0.432 0.052 0.17% 3231.281op/s 1 200
normalization/normalize_service/normalize_service/test_ASCII execution_time 45.654µs 45.812µs ± 0.061µs 45.809µs ± 0.033µs 45.842µs 45.903µs 45.990µs 46.177µs 0.80% 1.380 6.860 0.13% 0.004µs 1 200
normalization/normalize_service/normalize_service/test_ASCII throughput 21655839.148op/s 21828253.846op/s ± 29089.596op/s 21829588.774op/s ± 15534.800op/s 21846021.595op/s 21868581.876op/s 21892434.642op/s 21903891.080op/s 0.34% -1.352 6.707 0.13% 2056.945op/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 [495.426µs; 495.555µs] or [-0.013%; +0.013%] None None None
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000... throughput [2017940.921op/s; 2018465.589op/s] or [-0.013%; +0.013%] None None None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて execution_time [370.848µs; 370.930µs] or [-0.011%; +0.011%] None None None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて throughput [2695925.320op/s; 2696523.798op/s] or [-0.011%; +0.011%] None None None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters execution_time [167.584µs; 167.674µs] or [-0.027%; +0.027%] None None None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters throughput [5964001.681op/s; 5967144.899op/s] or [-0.026%; +0.026%] None None None
normalization/normalize_service/normalize_service/[empty string] execution_time [37.252µs; 37.269µs] or [-0.024%; +0.024%] None None None
normalization/normalize_service/normalize_service/[empty string] throughput [26831767.469op/s; 26844433.857op/s] or [-0.024%; +0.024%] None None None
normalization/normalize_service/normalize_service/test_ASCII execution_time [45.804µs; 45.821µs] or [-0.019%; +0.019%] None None None
normalization/normalize_service/normalize_service/test_ASCII throughput [21824222.308op/s; 21832285.384op/s] or [-0.018%; +0.018%] None None None

Group 15

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 530.071µs 530.872µs ± 0.490µs 530.833µs ± 0.267µs 531.083µs 531.536µs 532.202µs 534.823µs 0.75% 2.981 20.106 0.09% 0.035µs 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 [530.805µs; 530.940µs] or [-0.013%; +0.013%] None None None

Group 16

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 60.714ms 61.216ms ± 2.306ms 60.909ms ± 0.069ms 60.991ms 61.336ms 73.119ms 83.298ms 36.76% 8.487 72.697 3.76% 0.163ms 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 [60.896ms; 61.536ms] or [-0.522%; +0.522%] None None None

Group 17

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 2.410µs 2.436µs ± 0.021µs 2.430µs ± 0.008µs 2.440µs 2.486µs 2.497µs 2.499µs 2.80% 1.472 1.390 0.85% 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 [2.434µs; 2.439µs] or [-0.118%; +0.118%] None None None

Group 18

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 18.204µs 25.835µs ± 9.753µs 18.482µs ± 0.194µs 33.584µs 41.934µs 50.706µs 76.352µs 313.11% 1.338 2.904 37.66% 0.690µs 1 200
scenario metric 95% CI mean Shapiro-Wilk pvalue Ljung-Box pvalue (lag=1) Dip test pvalue
two way interface execution_time [24.484µs; 27.187µs] or [-5.232%; +5.232%] None None None

Group 19

cpu_model git_commit_sha git_commit_date git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz e39f146 1768597075 bengl/change-buffer
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 237.423ns 248.171ns ± 13.297ns 241.779ns ± 3.141ns 251.147ns 275.977ns 288.293ns 296.444ns 22.61% 1.710 2.021 5.34% 0.940ns 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 [246.328ns; 250.014ns] or [-0.743%; +0.743%] None None None

Baseline

Omitted due to size.

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codecov-commenter commented Jan 15, 2026 •
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Codecov Report

❌ Patch coverage is 0% with 230 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.05%. Comparing base (51c8cb4) to head (e39f146).

Additional details and impacted files 
@@            Coverage Diff             @@
##             main    #1453      +/-   ##
==========================================
- Coverage   71.29%   71.05%   -0.25%     
==========================================
  Files         416      418       +2     
  Lines       66872    67102     +230     
==========================================
+ Hits        47676    47678       +2     
- Misses      19196    19424     +228
Components Coverage Δ
libdd-crashtracker 61.22% <ø> (-0.02%) ⬇️
libdd-crashtracker-ffi 15.08% <ø> (ø)
libdd-alloc 98.73% <ø> (ø)
libdd-data-pipeline 85.75% <ø> (ø)
libdd-data-pipeline-ffi 77.01% <ø> (ø)
libdd-common 80.84% <ø> (ø)
libdd-common-ffi 74.19% <ø> (ø)
libdd-telemetry 60.26% <ø> (ø)
libdd-telemetry-ffi 21.17% <ø> (ø)
libdd-dogstatsd-client 83.75% <ø> (ø)
datadog-ipc 82.61% <ø> (ø)
libdd-profiling 80.68% <ø> (+0.02%) ⬆️
libdd-profiling-ffi 62.46% <ø> (ø)
datadog-sidecar 36.37% <ø> (ø)
datdog-sidecar-ffi 13.37% <ø> (ø)
spawn-worker 55.18% <ø> (ø)
libdd-tinybytes 92.44% <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 86.93% <0.00%> (-2.96%) ⬇️
datadog-tracer-flare 59.74% <ø> (ø)
libdd-log 75.57% <ø> (ø)
🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
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@bengl bengl force-pushed the bengl/change-buffer branch from ae7b0d1 to 4c76607 Compare January 16, 2026 20:19
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dd-octo-sts bot commented Jan 16, 2026

Artifact Size Benchmark Report

aarch64-alpine-linux-musl
Artifact Baseline Commit Change
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.so 8.00 MB 8.00 MB 0% (0 B) 👌
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.a 91.81 MB 91.81 MB 0% (0 B) 👌
aarch64-apple-darwin
Artifact Baseline Commit Change
/aarch64-apple-darwin/lib/libdatadog_profiling.a 63.03 MB 63.03 MB 0% (0 B) 👌
/aarch64-apple-darwin/lib/libdatadog_profiling.dylib 9.20 MB 9.20 MB 0% (0 B) 👌
aarch64-unknown-linux-gnu
Artifact Baseline Commit Change
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.a 106.16 MB 106.16 MB 0% (0 B) 👌
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.so 10.37 MB 10.37 MB 0% (0 B) 👌
libdatadog-x64-windows
Artifact Baseline Commit Change
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.dll 24.71 MB 24.71 MB 0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.lib 76.33 KB 76.33 KB 0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.pdb 164.57 MB 164.57 MB 0% (0 B) 👌
/libdatadog-x64-windows/debug/static/datadog_profiling_ffi.lib 811.95 MB 811.99 MB +0% (+43.94 KB) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.dll 9.31 MB 9.31 MB 0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.lib 76.33 KB 76.33 KB 0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.pdb 22.93 MB 22.93 MB 0% (0 B) 👌
/libdatadog-x64-windows/release/static/datadog_profiling_ffi.lib 48.32 MB 48.32 MB 0% (0 B) 👌
libdatadog-x86-windows
Artifact Baseline Commit Change
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.dll 20.82 MB 20.82 MB 0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.lib 77.50 KB 77.50 KB 0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.pdb 168.39 MB 168.41 MB +.01% (+24.00 KB) 🔍
/libdatadog-x86-windows/debug/static/datadog_profiling_ffi.lib 798.69 MB 798.73 MB +0% (+44.04 KB) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.dll 7.03 MB 7.03 MB 0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.lib 77.50 KB 77.50 KB 0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.pdb 24.48 MB 24.48 MB 0% (0 B) 👌
/libdatadog-x86-windows/release/static/datadog_profiling_ffi.lib 44.00 MB 44.00 MB 0% (0 B) 👌
x86_64-alpine-linux-musl
Artifact Baseline Commit Change
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.a 79.91 MB 79.91 MB 0% (0 B) 👌
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.so 9.51 MB 9.51 MB 0% (0 B) 👌
x86_64-apple-darwin
Artifact Baseline Commit Change
/x86_64-apple-darwin/lib/libdatadog_profiling.a 64.40 MB 64.40 MB 0% (0 B) 👌
/x86_64-apple-darwin/lib/libdatadog_profiling.dylib 10.23 MB 10.23 MB 0% (0 B) 👌
x86_64-unknown-linux-gnu
Artifact Baseline Commit Change
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.a 99.86 MB 99.86 MB 0% (0 B) 👌
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.so 11.08 MB 11.08 MB 0% (0 B) 👌

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