Prevent span start overflow panic

[VianneyRuhlmann]

for Dev Agent Session identified by Workflow Automation

You can ask for changes by mentioning @DataDog in a comment.

Feedback (especially what can be better) welcome in #code-gen-feedback!

---

What does this PR do?

• add a regression test that exercises span normalization with an i64::MIN start value
• guard normalize_span_start_duration with checked_add to avoid overflowing when computing start + duration

Motivation

A libFuzzer input produced an overflow panic in normalize_span_start_duration when start was near negative, because we were subtracting from i64::MAX before clamping the duration.

Additional Notes

cargo test -p libdd-trace-normalization currently cannot run in this sandbox because Cargo attempts to fetch the patched proptest git dependency from GitHub, but the environment has no network access.

How to test the change?

Run cargo test -p libdd-trace-normalization test_normalize_span_start_duration_handles_min_start in an environment that can download the workspace dependencies.

[datadog-datadog-prod-us1]

Bits AI Dev Agent Status: ✅ Done [Fix CI Errors]

You can ask for changes by mentioning @DataDog in a comment.

[datadog-datadog-prod-us1]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 3fa0c53 | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[pr-commenter]

Benchmarks

Comparison

Benchmark execution time: 2025-11-26 17:43:47

Comparing candidate commit 3fa0c53 in PR branch dd/fix-span-overflow-check with baseline commit c4d5ab8 in branch main.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 54 metrics, 2 unstable metrics.

scenario:tags/replace_trace_tags

• 🟥 execution_time [+97.681ns; +106.989ns] or [+4.023%; +4.406%]

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	3fa0c53	1764178190	dd/fix-span-overflow-check

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	189.677ns	192.364ns ± 2.551ns	191.756ns ± 1.407ns	193.205ns	197.831ns	200.749ns	203.873ns	6.32%	1.659	3.119	1.32%	0.180ns	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	[192.010ns; 192.717ns] or [-0.184%; +0.184%]	None	None	None

Group 2

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	1.190µs	3.235µs ± 1.422µs	3.022µs ± 0.033µs	3.046µs	3.682µs	13.963µs	14.692µs	386.21%	7.289	54.520	43.85%	0.101µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
write only interface	execution_time	[3.038µs; 3.432µs] or [-6.093%; +6.093%]	None	None	None

Group 3

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	17.580µs	25.178µs ± 9.046µs	17.893µs ± 0.193µs	32.695µs	41.734µs	42.263µs	63.733µs	256.18%	0.903	0.421	35.84%	0.640µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
two way interface	execution_time	[23.925µs; 26.432µs] or [-4.979%; +4.979%]	None	None	None

Group 4

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	158.791µs	159.470µs ± 0.244µs	159.449µs ± 0.145µs	159.611µs	159.839µs	160.298µs	160.488µs	0.65%	0.677	2.131	0.15%	0.017µs	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	[159.436µs; 159.504µs] or [-0.021%; +0.021%]	None	None	None

Group 5

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	34.467µs	34.966µs ± 0.840µs	34.583µs ± 0.074µs	34.712µs	36.714µs	36.757µs	38.497µs	11.32%	1.808	1.785	2.40%	0.059µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
redis/obfuscate_redis_string	execution_time	[34.850µs; 35.082µs] or [-0.333%; +0.333%]	None	None	None

Group 6

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	144.640µs	146.670µs ± 1.606µs	146.387µs ± 0.509µs	146.954µs	148.105µs	152.227µs	161.351µs	10.22%	5.653	43.278	1.09%	0.114µs	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	[146.448µs; 146.893µs] or [-0.152%; +0.152%]	None	None	None

Group 7

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	10.610ms	10.637ms ± 0.014ms	10.634ms ± 0.008ms	10.644ms	10.663ms	10.677ms	10.703ms	0.64%	1.087	2.127	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	[10.635ms; 10.639ms] or [-0.019%; +0.019%]	None	None	None

Group 8

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	61.671ms	62.210ms ± 2.223ms	61.875ms ± 0.092ms	62.012ms	62.278ms	72.788ms	84.002ms	35.76%	8.435	73.091	3.57%	0.157ms	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	[61.902ms; 62.518ms] or [-0.495%; +0.495%]	None	None	None

Group 9

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	6.129ms	6.387ms ± 0.049ms	6.390ms ± 0.016ms	6.406ms	6.441ms	6.461ms	6.627ms	3.71%	-2.175	13.901	0.77%	0.003ms	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	[6.380ms; 6.394ms] or [-0.107%; +0.107%]	None	None	None

Group 10

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	204.822µs	205.333µs ± 0.413µs	205.247µs ± 0.198µs	205.478µs	206.010µs	207.034µs	207.394µs	1.05%	2.355	7.883	0.20%	0.029µs	1	200
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	4821733.351op/s	4870149.880op/s ± 9758.266op/s	4872171.023op/s ± 4711.742op/s	4876320.051op/s	4880595.699op/s	4881129.641op/s	4882281.593op/s	0.21%	-2.329	7.729	0.20%	690.014op/s	1	200
normalization/normalize_name/normalize_name/bad-name	execution_time	18.156µs	18.297µs ± 0.109µs	18.261µs ± 0.040µs	18.337µs	18.511µs	18.640µs	18.704µs	2.42%	1.400	1.533	0.60%	0.008µs	1	200
normalization/normalize_name/normalize_name/bad-name	throughput	53464039.317op/s	54655316.934op/s ± 323707.088op/s	54760306.587op/s ± 121142.507op/s	54861100.296op/s	54983921.960op/s	55056260.633op/s	55078673.818op/s	0.58%	-1.372	1.429	0.59%	22889.548op/s	1	200
normalization/normalize_name/normalize_name/good	execution_time	10.676µs	10.855µs ± 0.077µs	10.857µs ± 0.040µs	10.897µs	10.959µs	11.007µs	11.348µs	4.52%	1.091	7.465	0.71%	0.005µs	1	200
normalization/normalize_name/normalize_name/good	throughput	88122449.533op/s	92124713.829op/s ± 647131.018op/s	92106801.415op/s ± 342053.904op/s	92444000.817op/s	93228372.801op/s	93575735.465op/s	93669390.284op/s	1.70%	-0.925	6.393	0.70%	45759.073op/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	[205.276µs; 205.391µs] or [-0.028%; +0.028%]	None	None	None
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	[4868797.478op/s; 4871502.282op/s] or [-0.028%; +0.028%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	execution_time	[18.282µs; 18.312µs] or [-0.083%; +0.083%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	throughput	[54610454.245op/s; 54700179.623op/s] or [-0.082%; +0.082%]	None	None	None
normalization/normalize_name/normalize_name/good	execution_time	[10.845µs; 10.866µs] or [-0.098%; +0.098%]	None	None	None
normalization/normalize_name/normalize_name/good	throughput	[92035027.694op/s; 92214399.965op/s] or [-0.097%; +0.097%]	None	None	None

Group 11

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	242.866ns	252.989ns ± 13.074ns	246.983ns ± 2.636ns	254.478ns	279.649ns	291.047ns	295.384ns	19.60%	1.589	1.270	5.15%	0.924ns	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	[251.177ns; 254.801ns] or [-0.716%; +0.716%]	None	None	None

Group 12

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	533.747µs	534.802µs ± 0.810µs	534.731µs ± 0.306µs	535.024µs	535.448µs	536.489µs	541.985µs	1.36%	6.244	50.963	0.15%	0.057µs	1	200
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	1845070.514op/s	1869854.819op/s ± 2804.999op/s	1870097.423op/s ± 1070.472op/s	1871174.635op/s	1872069.952op/s	1873282.753op/s	1873545.385op/s	0.18%	-6.181	50.249	0.15%	198.343op/s	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	379.797µs	380.784µs ± 0.475µs	380.755µs ± 0.273µs	381.047µs	381.434µs	381.678µs	384.560µs	1.00%	2.480	18.506	0.12%	0.034µs	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	2600374.160op/s	2626162.776op/s ± 3263.963op/s	2626364.082op/s ± 1880.413op/s	2628136.585op/s	2630907.043op/s	2632228.680op/s	2632982.502op/s	0.25%	-2.427	17.990	0.12%	230.797op/s	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	195.453µs	196.125µs ± 0.660µs	196.047µs ± 0.148µs	196.202µs	196.452µs	201.020µs	201.353µs	2.71%	6.703	48.756	0.34%	0.047µs	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	4966406.183op/s	5098848.106op/s ± 16770.355op/s	5100812.184op/s ± 3863.755op/s	5104600.656op/s	5109693.007op/s	5113074.162op/s	5116325.035op/s	0.30%	-6.644	48.171	0.33%	1185.843op/s	1	200
normalization/normalize_service/normalize_service/[empty string]	execution_time	35.828µs	35.953µs ± 0.064µs	35.948µs ± 0.042µs	35.993µs	36.056µs	36.141µs	36.152µs	0.57%	0.585	0.323	0.18%	0.005µs	1	200
normalization/normalize_service/normalize_service/[empty string]	throughput	27660774.655op/s	27813830.752op/s ± 49626.229op/s	27818131.489op/s ± 32445.498op/s	27848518.071op/s	27886907.473op/s	27900454.865op/s	27911495.713op/s	0.34%	-0.574	0.302	0.18%	3509.104op/s	1	200
normalization/normalize_service/normalize_service/test_ASCII	execution_time	44.971µs	45.153µs ± 0.143µs	45.144µs ± 0.099µs	45.247µs	45.326µs	45.367µs	46.347µs	2.66%	2.928	22.613	0.32%	0.010µs	1	200
normalization/normalize_service/normalize_service/test_ASCII	throughput	21576204.036op/s	22147268.467op/s ± 69347.649op/s	22151188.012op/s ± 48478.683op/s	22197513.102op/s	22233610.772op/s	22235482.806op/s	22236711.773op/s	0.39%	-2.781	21.027	0.31%	4903.619op/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	[534.690µs; 534.914µs] or [-0.021%; +0.021%]	None	None	None
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	[1869466.073op/s; 1870243.565op/s] or [-0.021%; +0.021%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	[380.719µs; 380.850µs] or [-0.017%; +0.017%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	[2625710.422op/s; 2626615.130op/s] or [-0.017%; +0.017%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	[196.033µs; 196.216µs] or [-0.047%; +0.047%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	[5096523.896op/s; 5101172.316op/s] or [-0.046%; +0.046%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	execution_time	[35.945µs; 35.962µs] or [-0.025%; +0.025%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	throughput	[27806953.034op/s; 27820708.470op/s] or [-0.025%; +0.025%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	execution_time	[45.133µs; 45.173µs] or [-0.044%; +0.044%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	throughput	[22137657.550op/s; 22156879.384op/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	3fa0c53	1764178190	dd/fix-span-overflow-check

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	14.853ms	14.915ms ± 0.032ms	14.909ms ± 0.017ms	14.927ms	14.976ms	15.030ms	15.087ms	1.20%	1.765	5.442	0.21%	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	[14.911ms; 14.920ms] or [-0.030%; +0.030%]	None	None	None

Group 14

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	2.498µs	2.531µs ± 0.030µs	2.523µs ± 0.016µs	2.547µs	2.601µs	2.608µs	2.610µs	3.47%	1.200	0.566	1.17%	0.002µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
tags/replace_trace_tags	execution_time	[2.527µs; 2.535µs] or [-0.162%; +0.162%]	None	None	None

Group 15

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	3.914µs ± 0.003µs	3.914µs ± 0.002µs	3.916µs	3.918µs	3.920µs	3.920µs	0.16%	-1.876	14.263	0.07%	0.000µs	1	200
credit_card/is_card_number/	throughput	255086192.965op/s	255487116.040op/s ± 187182.093op/s	255500002.701op/s ± 118320.910op/s	255598504.206op/s	255722619.657op/s	255789227.660op/s	256895568.934op/s	0.55%	1.904	14.512	0.07%	13235.773op/s	1	200
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	77.850µs	78.287µs ± 0.446µs	78.058µs ± 0.140µs	78.504µs	79.177µs	79.726µs	80.244µs	2.80%	1.751	3.155	0.57%	0.032µs	1	200
credit_card/is_card_number/ 3782-8224-6310-005	throughput	12462055.232op/s	12774001.118op/s ± 72042.663op/s	12811044.413op/s ± 23055.792op/s	12824506.028op/s	12834223.613op/s	12842809.347op/s	12845148.127op/s	0.27%	-1.716	2.979	0.56%	5094.186op/s	1	200
credit_card/is_card_number/ 378282246310005	execution_time	71.431µs	71.749µs ± 0.337µs	71.673µs ± 0.147µs	71.832µs	72.246µs	72.941µs	74.098µs	3.38%	3.737	20.693	0.47%	0.024µs	1	200
credit_card/is_card_number/ 378282246310005	throughput	13495553.745op/s	13937849.576op/s ± 64314.294op/s	13952295.706op/s ± 28557.935op/s	13978423.605op/s	13991813.395op/s	13995775.350op/s	13999459.621op/s	0.34%	-3.617	19.557	0.46%	4547.707op/s	1	200
credit_card/is_card_number/37828224631	execution_time	3.895µs	3.915µs ± 0.003µs	3.915µs ± 0.002µs	3.916µs	3.919µs	3.921µs	3.921µs	0.17%	-1.369	10.141	0.07%	0.000µs	1	200
credit_card/is_card_number/37828224631	throughput	255027866.910op/s	255452403.146op/s ± 184432.475op/s	255454145.981op/s ± 116683.108op/s	255569994.233op/s	255675088.858op/s	255766025.082op/s	256733579.175op/s	0.50%	1.391	10.314	0.07%	13041.345op/s	1	200
credit_card/is_card_number/378282246310005	execution_time	68.236µs	68.422µs ± 0.316µs	68.316µs ± 0.036µs	68.361µs	69.060µs	69.773µs	70.624µs	3.38%	3.626	15.792	0.46%	0.022µs	1	200
credit_card/is_card_number/378282246310005	throughput	14159515.710op/s	14615581.022op/s ± 66452.710op/s	14637862.275op/s ± 7657.130op/s	14644685.923op/s	14651985.079op/s	14654793.757op/s	14655124.543op/s	0.12%	-3.564	15.139	0.45%	4698.916op/s	1	200
credit_card/is_card_number/37828224631000521389798	execution_time	45.454µs	45.719µs ± 0.098µs	45.714µs ± 0.074µs	45.796µs	45.873µs	45.930µs	45.991µs	0.61%	0.072	-0.349	0.21%	0.007µs	1	200
credit_card/is_card_number/37828224631000521389798	throughput	21743462.292op/s	21872749.612op/s ± 46972.963op/s	21875240.510op/s ± 35401.490op/s	21905625.366op/s	21946170.793op/s	21968742.797op/s	22000208.751op/s	0.57%	-0.061	-0.352	0.21%	3321.490op/s	1	200
credit_card/is_card_number/x371413321323331	execution_time	6.553µs	6.615µs ± 0.020µs	6.617µs ± 0.015µs	6.631µs	6.642µs	6.644µs	6.645µs	0.42%	-0.500	-0.411	0.30%	0.001µs	1	200
credit_card/is_card_number/x371413321323331	throughput	150491692.342op/s	151177506.897op/s ± 448862.894op/s	151116271.653op/s ± 344349.783op/s	151480561.192op/s	151934450.918op/s	152192885.111op/s	152609060.543op/s	0.99%	0.512	-0.389	0.30%	31739.400op/s	1	200
credit_card/is_card_number_no_luhn/	execution_time	3.897µs	3.915µs ± 0.003µs	3.915µs ± 0.002µs	3.917µs	3.921µs	3.923µs	3.924µs	0.24%	-0.401	5.291	0.08%	0.000µs	1	200
credit_card/is_card_number_no_luhn/	throughput	254811931.342op/s	255406525.857op/s ± 205264.198op/s	255415891.561op/s ± 133188.198op/s	255554139.150op/s	255649809.511op/s	255703701.336op/s	256614090.072op/s	0.47%	0.418	5.379	0.08%	14514.371op/s	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	65.557µs	65.722µs ± 0.061µs	65.715µs ± 0.043µs	65.763µs	65.826µs	65.864µs	65.915µs	0.30%	0.338	0.164	0.09%	0.004µs	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	15170967.884op/s	15215553.068op/s ± 14224.862op/s	15217141.146op/s ± 9931.734op/s	15225496.697op/s	15235805.685op/s	15245233.500op/s	15253820.584op/s	0.24%	-0.332	0.159	0.09%	1005.850op/s	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	53.349µs	53.432µs ± 0.079µs	53.422µs ± 0.026µs	53.450µs	53.481µs	53.593µs	54.185µs	1.43%	7.234	62.680	0.15%	0.006µs	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	18455444.238op/s	18715373.330op/s ± 27336.395op/s	18719028.037op/s ± 9040.849op/s	18726338.086op/s	18734507.068op/s	18740336.018op/s	18744602.203op/s	0.14%	-7.179	62.008	0.15%	1932.975op/s	1	200
credit_card/is_card_number_no_luhn/37828224631	execution_time	3.892µs	3.914µs ± 0.003µs	3.914µs ± 0.002µs	3.916µs	3.918µs	3.919µs	3.922µs	0.20%	-2.258	18.248	0.07%	0.000µs	1	200
credit_card/is_card_number_no_luhn/37828224631	throughput	254992055.825op/s	255497058.421op/s ± 179683.688op/s	255493791.507op/s ± 107956.157op/s	255600898.455op/s	255719285.702op/s	255797120.140op/s	256925318.899op/s	0.56%	2.290	18.547	0.07%	12705.555op/s	1	200
credit_card/is_card_number_no_luhn/378282246310005	execution_time	50.152µs	50.204µs ± 0.037µs	50.194µs ± 0.018µs	50.221µs	50.261µs	50.345µs	50.404µs	0.42%	2.041	7.163	0.07%	0.003µs	1	200
credit_card/is_card_number_no_luhn/378282246310005	throughput	19839716.911op/s	19918671.025op/s ± 14656.314op/s	19922588.789op/s ± 7207.881op/s	19928114.806op/s	19936183.082op/s	19937339.136op/s	19939457.824op/s	0.08%	-2.030	7.093	0.07%	1036.358op/s	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	45.458µs	45.723µs ± 0.099µs	45.728µs ± 0.064µs	45.788µs	45.888µs	45.934µs	45.999µs	0.59%	-0.140	-0.053	0.21%	0.007µs	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	21739672.092op/s	21870693.314op/s ± 47148.763op/s	21868483.142op/s ± 30691.852op/s	21902083.988op/s	21950045.671op/s	21988379.822op/s	21998401.048op/s	0.59%	0.152	-0.050	0.22%	3333.921op/s	1	200
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	6.557µs	6.619µs ± 0.017µs	6.621µs ± 0.011µs	6.633µs	6.640µs	6.645µs	6.649µs	0.41%	-0.978	1.013	0.26%	0.001µs	1	200
credit_card/is_card_number_no_luhn/x371413321323331	throughput	150408028.967op/s	151078989.624op/s ± 391902.593op/s	151026210.155op/s ± 256812.656op/s	151280261.698op/s	151820350.615op/s	152338652.233op/s	152500704.334op/s	0.98%	0.994	1.063	0.26%	27711.698op/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	[3.914µs; 3.914µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/	throughput	[255461174.402op/s; 255513057.678op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	[78.225µs; 78.348µs] or [-0.079%; +0.079%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	throughput	[12764016.698op/s; 12783985.538op/s] or [-0.078%; +0.078%]	None	None	None
credit_card/is_card_number/ 378282246310005	execution_time	[71.702µs; 71.795µs] or [-0.065%; +0.065%]	None	None	None
credit_card/is_card_number/ 378282246310005	throughput	[13928936.233op/s; 13946762.918op/s] or [-0.064%; +0.064%]	None	None	None
credit_card/is_card_number/37828224631	execution_time	[3.914µs; 3.915µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/37828224631	throughput	[255426842.579op/s; 255477963.714op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/378282246310005	execution_time	[68.378µs; 68.465µs] or [-0.064%; +0.064%]	None	None	None
credit_card/is_card_number/378282246310005	throughput	[14606371.315op/s; 14624790.728op/s] or [-0.063%; +0.063%]	None	None	None
credit_card/is_card_number/37828224631000521389798	execution_time	[45.706µs; 45.733µs] or [-0.030%; +0.030%]	None	None	None
credit_card/is_card_number/37828224631000521389798	throughput	[21866239.611op/s; 21879259.613op/s] or [-0.030%; +0.030%]	None	None	None
credit_card/is_card_number/x371413321323331	execution_time	[6.612µs; 6.618µs] or [-0.041%; +0.041%]	None	None	None
credit_card/is_card_number/x371413321323331	throughput	[151115298.817op/s; 151239714.977op/s] or [-0.041%; +0.041%]	None	None	None
credit_card/is_card_number_no_luhn/	execution_time	[3.915µs; 3.916µs] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number_no_luhn/	throughput	[255378078.214op/s; 255434973.501op/s] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	[65.714µs; 65.731µs] or [-0.013%; +0.013%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	[15213581.639op/s; 15217524.497op/s] or [-0.013%; +0.013%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	[53.421µs; 53.443µs] or [-0.020%; +0.020%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	[18711584.769op/s; 18719161.892op/s] or [-0.020%; +0.020%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	execution_time	[3.914µs; 3.914µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	throughput	[255472155.990op/s; 255521960.852op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	execution_time	[50.199µs; 50.209µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	throughput	[19916639.801op/s; 19920702.249op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	[45.710µs; 45.737µs] or [-0.030%; +0.030%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	[21864158.949op/s; 21877227.679op/s] or [-0.030%; +0.030%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	[6.617µs; 6.621µs] or [-0.036%; +0.036%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	throughput	[151024675.694op/s; 151133303.554op/s] or [-0.036%; +0.036%]	None	None	None

Group 16

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	87.825µs	88.140µs ± 0.191µs	88.124µs ± 0.051µs	88.174µs	88.257µs	88.649µs	90.439µs	2.63%	9.033	104.499	0.22%	0.013µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
sql/obfuscate_sql_string	execution_time	[88.113µs; 88.166µs] or [-0.030%; +0.030%]	None	None	None

Group 17

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	3fa0c53	1764178190	dd/fix-span-overflow-check

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	5.006µs	5.080µs ± 0.041µs	5.058µs ± 0.027µs	5.129µs	5.138µs	5.140µs	5.146µs	1.74%	0.308	-1.528	0.80%	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	[5.075µs; 5.086µs] or [-0.111%; +0.111%]	None	None	None

Baseline

Omitted due to size.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.23%. Comparing base (c4d5ab8) to head (3fa0c53).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1373   +/-   ##
=======================================
  Coverage   71.22%   71.23%           
=======================================
  Files         395      395           
  Lines       63292    63305   +13     
=======================================
+ Hits        45079    45094   +15     
+ Misses      18213    18211    -2     

Components	Coverage Δ
libdd-crashtracker	59.91% <ø> (+0.01%)	⬆️
libdd-crashtracker-ffi	15.31% <ø> (ø)
libdd-alloc	98.73% <ø> (ø)
libdd-data-pipeline	86.00% <ø> (ø)
libdd-data-pipeline-ffi	77.63% <ø> (ø)
libdd-common	80.93% <ø> (ø)
libdd-common-ffi	73.90% <ø> (ø)
libdd-telemetry	59.98% <ø> (-0.04%)	⬇️
libdd-telemetry-ffi	21.24% <ø> (ø)
libdd-dogstatsd-client	83.75% <ø> (ø)
datadog-ipc	82.61% <ø> (ø)
libdd-profiling	79.75% <ø> (+0.02%)	⬆️
libdd-profiling-ffi	62.13% <ø> (ø)
datadog-sidecar	36.98% <ø> (ø)
datdog-sidecar-ffi	16.40% <ø> (ø)
spawn-worker	55.18% <ø> (ø)
libdd-tinybytes	92.44% <ø> (ø)
libdd-trace-normalization	98.27% <100.00%> (+0.03%)	⬆️
datadog-trace-obfuscation	94.17% <ø> (ø)
libdd-trace-protobuf	59.65% <ø> (ø)
libdd-trace-utils	90.06% <ø> (ø)
datadog-tracer-flare	62.06% <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.

[dd-octo-sts]

Artifact Size Benchmark Report

aarch64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.so	7.38 MB	7.38 MB	0% (0 B) 👌
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.a	85.96 MB	85.96 MB	0% (0 B) 👌

aarch64-apple-darwin

Artifact	Baseline	Commit	Change
/aarch64-apple-darwin/lib/libdatadog_profiling.a	57.99 MB	57.99 MB	0% (0 B) 👌
/aarch64-apple-darwin/lib/libdatadog_profiling.dylib	8.43 MB	8.43 MB	0% (0 B) 👌

aarch64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.so	9.53 MB	9.53 MB	0% (0 B) 👌
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.a	99.69 MB	99.69 MB	0% (0 B) 👌

libdatadog-x64-windows

Artifact	Baseline	Commit	Change
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.dll	19.57 MB	19.57 MB	0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.lib	69.82 KB	69.82 KB	0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.pdb	138.53 MB	138.53 MB	0% (0 B) 👌
/libdatadog-x64-windows/debug/static/datadog_profiling_ffi.lib	735.63 MB	735.64 MB	+0% (+4.36 KB) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.dll	6.34 MB	6.34 MB	0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.lib	69.82 KB	69.82 KB	0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.pdb	19.67 MB	19.67 MB	0% (0 B) 👌
/libdatadog-x64-windows/release/static/datadog_profiling_ffi.lib	38.64 MB	38.64 MB	0% (0 B) 👌

libdatadog-x86-windows

Artifact	Baseline	Commit	Change
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.dll	16.70 MB	16.70 MB	0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.lib	70.90 KB	70.90 KB	0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.pdb	141.08 MB	141.08 MB	0% (0 B) 👌
/libdatadog-x86-windows/debug/static/datadog_profiling_ffi.lib	724.37 MB	724.38 MB	+0% (+4.50 KB) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.dll	4.87 MB	4.87 MB	0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.lib	70.90 KB	70.90 KB	0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.pdb	20.90 MB	20.90 MB	0% (0 B) 👌
/libdatadog-x86-windows/release/static/datadog_profiling_ffi.lib	36.39 MB	36.39 MB	0% (0 B) 👌

x86_64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.a	74.31 MB	74.31 MB	0% (0 B) 👌
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.so	8.85 MB	8.85 MB	0% (0 B) 👌

x86_64-apple-darwin

Artifact	Baseline	Commit	Change
/x86_64-apple-darwin/lib/libdatadog_profiling.a	59.35 MB	59.35 MB	0% (0 B) 👌
/x86_64-apple-darwin/lib/libdatadog_profiling.dylib	9.47 MB	9.47 MB	0% (0 B) 👌

x86_64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.a	93.92 MB	93.92 MB	0% (0 B) 👌
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.so	10.28 MB	10.28 MB	0% (0 B) 👌