feat(span): remove clone bound on spantext

[paullegranddc]

Motivation

Cloning is very cheap as long as we have a ByteString or a str slice, but if we want to use python strings we need to hold the GIL to clone them.
This is not possible in general... But there are no operations requiring us to actual clone the data.

Changes

• use an indexmap for the shared dictionary. This datastructure is exactly what we want (O(1) access and insertion order iteration) and keep only one of each value
• Use indices into the span slice while computing top level rather than copying the service string

[datadog-datadog-prod-us1]

⚠️ Tests

⚠️ Warnings

❄️ 1 New flaky test detected

test_ddog_sidecar_register_app from datadog-sidecar-ffi::sidecar (Datadog)

thread 'test_ddog_sidecar_register_app' panicked at datadog-sidecar-ffi\tests\sidecar.rs:112:10

thread 'test_ddog_sidecar_register_app' panicked at datadog-sidecar-ffi\tests\sidecar.rs:112:10:
Called ffi::Option::unwrap_none but option was Some(Error("Os { code: 232, kind: BrokenPipe, message: "The pipe is being closed." }"))
stack backtrace:
   0:     0x7ff60e9a1922 - std::backtrace_rs::backtrace::win64::trace
                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library\std\src\..\..\backtrace\src\backtrace\win64.rs:85
   1:     0x7ff60e9a1922 - std::backtrace_rs::backtrace::trace_unsynchronized
                               at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66
   2:     0x7ff60e9a1922 - std::sys::backtrace::_print_fmt
...

ℹ️ Info

🧪 All tests passed

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 5873b54 | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[pr-commenter]

Benchmarks

Comparison

Benchmark execution time: 2025-10-29 19:49:24

Comparing candidate commit 5873b54 in PR branch paullgdc/trace-utils/remove_clone_on_spantext with baseline commit c365938 in branch main.

Found 6 performance improvements and 9 performance regressions! Performance is the same for 40 metrics, 2 unstable metrics.

scenario:benching serializing traces from their internal representation to msgpack

• 🟩 execution_time [-699.876µs; -689.327µs] or [-4.786%; -4.714%]

scenario:credit_card/is_card_number/37828224631000521389798

• 🟥 execution_time [+6.554µs; +6.605µs] or [+14.366%; +14.479%]
• 🟥 throughput [-2775664.850op/s; -2751206.098op/s] or [-12.662%; -12.550%]

scenario:credit_card/is_card_number/x371413321323331

• 🟩 execution_time [-390.946ns; -387.974ns] or [-6.075%; -6.029%]
• 🟩 throughput [+9971049.402op/s; +10051168.058op/s] or [+6.416%; +6.468%]

scenario:credit_card/is_card_number_no_luhn/ 378282246310005

• 🟥 execution_time [+3.449µs; +3.497µs] or [+6.378%; +6.468%]
• 🟥 throughput [-1124175.755op/s; -1108128.449op/s] or [-6.079%; -5.992%]

scenario:credit_card/is_card_number_no_luhn/378282246310005

• 🟥 execution_time [+4.123µs; +4.176µs] or [+8.145%; +8.251%]
• 🟥 throughput [-1506412.861op/s; -1487424.054op/s] or [-7.625%; -7.528%]

scenario:credit_card/is_card_number_no_luhn/37828224631000521389798

• 🟥 execution_time [+6.496µs; +6.551µs] or [+14.223%; +14.342%]
• 🟥 throughput [-2749474.892op/s; -2723681.764op/s] or [-12.558%; -12.440%]

scenario:credit_card/is_card_number_no_luhn/x371413321323331

• 🟩 execution_time [-384.894ns; -381.950ns] or [-5.982%; -5.936%]
• 🟩 throughput [+9808015.210op/s; +9887198.446op/s] or [+6.311%; +6.362%]

scenario:normalization/normalize_trace/test_trace

• 🟩 execution_time [-51.097ns; -46.194ns] or [-16.992%; -15.362%]

scenario:sql/obfuscate_sql_string

• 🟥 execution_time [+4.388µs; +4.471µs] or [+5.140%; +5.238%]

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	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	160.902µs	161.744µs ± 0.249µs	161.717µs ± 0.133µs	161.871µs	162.067µs	162.452µs	163.044µs	0.82%	1.040	5.760	0.15%	0.018µs	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	[161.709µs; 161.778µs] or [-0.021%; +0.021%]	None	None	None

Group 2

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	3.894µs	3.912µs ± 0.003µs	3.911µs ± 0.002µs	3.913µs	3.916µs	3.917µs	3.919µs	0.20%	-1.049	9.221	0.07%	0.000µs	1	200
credit_card/is_card_number/	throughput	255187753.542op/s	255655742.462op/s ± 169864.207op/s	255688238.671op/s ± 101589.624op/s	255764359.237op/s	255868522.870op/s	255912681.690op/s	256803175.926op/s	0.44%	1.070	9.363	0.07%	12011.213op/s	1	200
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	79.055µs	80.746µs ± 0.803µs	80.725µs ± 0.575µs	81.305µs	82.028µs	82.456µs	82.986µs	2.80%	0.151	-0.502	0.99%	0.057µs	1	200
credit_card/is_card_number/ 3782-8224-6310-005	throughput	12050214.800op/s	12385692.158op/s ± 122970.647op/s	12387793.134op/s ± 88145.949op/s	12474996.600op/s	12588942.556op/s	12636824.144op/s	12649382.578op/s	2.11%	-0.107	-0.522	0.99%	8695.338op/s	1	200
credit_card/is_card_number/ 378282246310005	execution_time	74.216µs	74.944µs ± 0.172µs	74.935µs ± 0.077µs	75.023µs	75.243µs	75.332µs	75.722µs	1.05%	0.083	3.332	0.23%	0.012µs	1	200
credit_card/is_card_number/ 378282246310005	throughput	13206128.748op/s	13343382.035op/s ± 30574.451op/s	13344817.844op/s ± 13723.604op/s	13357865.953op/s	13387890.354op/s	13424916.022op/s	13474256.628op/s	0.97%	-0.046	3.326	0.23%	2161.940op/s	1	200
credit_card/is_card_number/37828224631	execution_time	3.892µs	3.911µs ± 0.003µs	3.911µs ± 0.002µs	3.913µs	3.916µs	3.918µs	3.920µs	0.21%	-1.384	12.836	0.07%	0.000µs	1	200
credit_card/is_card_number/37828224631	throughput	255129428.546op/s	255664674.531op/s ± 179380.485op/s	255668782.851op/s ± 99954.265op/s	255774129.769op/s	255871578.526op/s	255965410.591op/s	256965787.774op/s	0.51%	1.412	13.041	0.07%	12684.116op/s	1	200
credit_card/is_card_number/378282246310005	execution_time	71.682µs	72.117µs ± 0.188µs	72.103µs ± 0.097µs	72.213µs	72.414µs	72.627µs	72.772µs	0.93%	0.319	0.924	0.26%	0.013µs	1	200
credit_card/is_card_number/378282246310005	throughput	13741506.834op/s	13866428.689op/s ± 36114.349op/s	13869071.972op/s ± 18645.418op/s	13885228.549op/s	13929077.425op/s	13945779.016op/s	13950584.821op/s	0.59%	-0.297	0.893	0.26%	2553.670op/s	1	200
credit_card/is_card_number/37828224631000521389798	execution_time	52.128µs	52.197µs ± 0.034µs	52.194µs ± 0.024µs	52.219µs	52.252µs	52.281µs	52.299µs	0.20%	0.224	-0.339	0.06%	0.002µs	1	200
credit_card/is_card_number/37828224631000521389798	throughput	19120797.831op/s	19158260.169op/s ± 12367.806op/s	19159417.489op/s ± 8826.250op/s	19167288.628op/s	19178124.856op/s	19182220.748op/s	19183584.607op/s	0.13%	-0.221	-0.342	0.06%	874.536op/s	1	200
credit_card/is_card_number/x371413321323331	execution_time	6.022µs	6.046µs ± 0.010µs	6.045µs ± 0.007µs	6.052µs	6.063µs	6.068µs	6.072µs	0.44%	0.207	-0.245	0.17%	0.001µs	1	200
credit_card/is_card_number/x371413321323331	throughput	164700322.435op/s	165408840.637op/s ± 273962.702op/s	165429102.915op/s ± 187005.543op/s	165592894.186op/s	165812218.116op/s	166002008.548op/s	166066304.414op/s	0.39%	-0.199	-0.248	0.17%	19372.088op/s	1	200
credit_card/is_card_number_no_luhn/	execution_time	3.893µs	3.911µs ± 0.003µs	3.911µs ± 0.001µs	3.913µs	3.915µs	3.917µs	3.919µs	0.19%	-1.399	11.242	0.07%	0.000µs	1	200
credit_card/is_card_number_no_luhn/	throughput	255199477.265op/s	255673449.176op/s ± 167926.319op/s	255676580.025op/s ± 89822.016op/s	255767196.559op/s	255893885.689op/s	255937866.336op/s	256861940.675op/s	0.46%	1.421	11.414	0.07%	11874.184op/s	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	64.140µs	64.303µs ± 0.096µs	64.281µs ± 0.043µs	64.333µs	64.513µs	64.645µs	64.788µs	0.79%	2.047	5.768	0.15%	0.007µs	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	15434866.989op/s	15551442.291op/s ± 23052.892op/s	15556726.631op/s ± 10397.273op/s	15566249.647op/s	15576293.038op/s	15582619.926op/s	15590907.383op/s	0.22%	-2.031	5.682	0.15%	1630.086op/s	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	57.372µs	57.547µs ± 0.103µs	57.528µs ± 0.065µs	57.602µs	57.744µs	57.863µs	57.994µs	0.81%	1.301	2.465	0.18%	0.007µs	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	17243045.181op/s	17377090.676op/s ± 31084.148op/s	17382838.794op/s ± 19593.607op/s	17399611.554op/s	17416217.285op/s	17422608.572op/s	17430180.357op/s	0.27%	-1.286	2.406	0.18%	2197.981op/s	1	200
credit_card/is_card_number_no_luhn/37828224631	execution_time	3.893µs	3.913µs ± 0.003µs	3.913µs ± 0.002µs	3.914µs	3.916µs	3.919µs	3.926µs	0.33%	-1.276	14.006	0.07%	0.000µs	1	200
credit_card/is_card_number_no_luhn/37828224631	throughput	254736595.782op/s	255587172.614op/s ± 180457.697op/s	255584601.039op/s ± 102332.519op/s	255681524.054op/s	255819522.673op/s	255907151.289op/s	256885248.274op/s	0.51%	1.307	14.177	0.07%	12760.286op/s	1	200
credit_card/is_card_number_no_luhn/378282246310005	execution_time	54.566µs	54.764µs ± 0.150µs	54.725µs ± 0.065µs	54.800µs	55.046µs	55.335µs	55.429µs	1.29%	1.800	3.910	0.27%	0.011µs	1	200
credit_card/is_card_number_no_luhn/378282246310005	throughput	18041012.249op/s	18260342.811op/s ± 49830.868op/s	18273227.905op/s ± 21645.876op/s	18292834.697op/s	18314360.845op/s	18325244.839op/s	18326580.873op/s	0.29%	-1.778	3.808	0.27%	3523.574op/s	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	52.136µs	52.198µs ± 0.046µs	52.189µs ± 0.020µs	52.213µs	52.247µs	52.353µs	52.602µs	0.79%	4.421	31.237	0.09%	0.003µs	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	19010766.827op/s	19157995.266op/s ± 16972.642op/s	19161257.853op/s ± 7191.837op/s	19167282.408op/s	19174104.988op/s	19179371.608op/s	19180510.683op/s	0.10%	-4.384	30.814	0.09%	1200.147op/s	1	200
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	6.028µs	6.051µs ± 0.010µs	6.052µs ± 0.007µs	6.057µs	6.067µs	6.077µs	6.081µs	0.48%	0.165	0.055	0.16%	0.001µs	1	200
credit_card/is_card_number_no_luhn/x371413321323331	throughput	164449402.117op/s	165257165.822op/s ± 269728.311op/s	165244815.763op/s ± 184221.076op/s	165454446.394op/s	165715867.003op/s	165839905.079op/s	165897169.835op/s	0.39%	-0.155	0.046	0.16%	19072.672op/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 [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number/	throughput	[255632200.916op/s; 255679284.007op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	[80.635µs; 80.857µs] or [-0.138%; +0.138%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	throughput	[12368649.609op/s; 12402734.707op/s] or [-0.138%; +0.138%]	None	None	None
credit_card/is_card_number/ 378282246310005	execution_time	[74.920µs; 74.968µs] or [-0.032%; +0.032%]	None	None	None
credit_card/is_card_number/ 378282246310005	throughput	[13339144.710op/s; 13347619.360op/s] or [-0.032%; +0.032%]	None	None	None
credit_card/is_card_number/37828224631	execution_time	[3.911µs; 3.912µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/37828224631	throughput	[255639814.121op/s; 255689534.941op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/378282246310005	execution_time	[72.091µs; 72.143µs] or [-0.036%; +0.036%]	None	None	None
credit_card/is_card_number/378282246310005	throughput	[13861423.588op/s; 13871433.791op/s] or [-0.036%; +0.036%]	None	None	None
credit_card/is_card_number/37828224631000521389798	execution_time	[52.192µs; 52.201µs] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number/37828224631000521389798	throughput	[19156546.110op/s; 19159974.228op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number/x371413321323331	execution_time	[6.044µs; 6.047µs] or [-0.023%; +0.023%]	None	None	None
credit_card/is_card_number/x371413321323331	throughput	[165370872.041op/s; 165446809.232op/s] or [-0.023%; +0.023%]	None	None	None
credit_card/is_card_number_no_luhn/	execution_time	[3.911µs; 3.912µs] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/	throughput	[255650176.203op/s; 255696722.148op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	[64.290µs; 64.316µs] or [-0.021%; +0.021%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	[15548247.382op/s; 15554637.200op/s] or [-0.021%; +0.021%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	[57.533µs; 57.562µs] or [-0.025%; +0.025%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	[17372782.712op/s; 17381398.640op/s] or [-0.025%; +0.025%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	execution_time	[3.912µs; 3.913µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	throughput	[255562162.912op/s; 255612182.315op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	execution_time	[54.743µs; 54.785µs] or [-0.038%; +0.038%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	throughput	[18253436.732op/s; 18267248.890op/s] or [-0.038%; +0.038%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	[52.191µs; 52.204µs] or [-0.012%; +0.012%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	[19155643.021op/s; 19160347.511op/s] or [-0.012%; +0.012%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	[6.050µs; 6.053µs] or [-0.023%; +0.023%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	throughput	[165219784.072op/s; 165294547.572op/s] or [-0.023%; +0.023%]	None	None	None

Group 3

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	496.023µs	496.861µs ± 0.389µs	496.823µs ± 0.240µs	497.112µs	497.540µs	497.920µs	497.952µs	0.23%	0.543	0.124	0.08%	0.028µs	1	200
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	2008226.365op/s	2012634.657op/s ± 1575.473op/s	2012789.150op/s ± 973.897op/s	2013663.434op/s	2014954.027op/s	2015581.272op/s	2016035.773op/s	0.16%	-0.539	0.118	0.08%	111.403op/s	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	372.601µs	373.409µs ± 0.280µs	373.407µs ± 0.180µs	373.578µs	373.831µs	374.150µs	374.413µs	0.27%	0.330	0.724	0.07%	0.020µs	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	2670845.262op/s	2678030.254op/s ± 2005.735op/s	2678046.267op/s ± 1289.079op/s	2679466.517op/s	2681168.368op/s	2682263.321op/s	2683834.182op/s	0.22%	-0.324	0.717	0.07%	141.827op/s	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	168.497µs	168.852µs ± 0.282µs	168.813µs ± 0.106µs	168.926µs	169.164µs	169.467µs	171.178µs	1.40%	5.512	41.562	0.17%	0.020µs	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	5841865.854op/s	5922376.093op/s ± 9790.401op/s	5923711.958op/s ± 3727.282op/s	5927104.608op/s	5930501.760op/s	5933503.205op/s	5934836.052op/s	0.19%	-5.446	40.840	0.16%	692.286op/s	1	200
normalization/normalize_service/normalize_service/[empty string]	execution_time	36.176µs	36.369µs ± 0.082µs	36.363µs ± 0.050µs	36.413µs	36.495µs	36.595µs	36.736µs	1.03%	0.615	1.630	0.23%	0.006µs	1	200
normalization/normalize_service/normalize_service/[empty string]	throughput	27221014.623op/s	27496255.798op/s ± 62021.371op/s	27500465.694op/s ± 37480.351op/s	27537206.318op/s	27587310.894op/s	27625226.582op/s	27642478.685op/s	0.52%	-0.594	1.566	0.22%	4385.573op/s	1	200
normalization/normalize_service/normalize_service/test_ASCII	execution_time	46.191µs	46.293µs ± 0.109µs	46.279µs ± 0.034µs	46.319µs	46.372µs	46.430µs	47.668µs	3.00%	9.990	122.705	0.24%	0.008µs	1	200
normalization/normalize_service/normalize_service/test_ASCII	throughput	20978375.491op/s	21601494.159op/s ± 49918.455op/s	21608010.524op/s ± 16092.830op/s	21622451.457op/s	21634942.250op/s	21645823.446op/s	21649400.468op/s	0.19%	-9.814	119.741	0.23%	3529.768op/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	[496.808µs; 496.915µs] or [-0.011%; +0.011%]	None	None	None
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	[2012416.312op/s; 2012853.003op/s] or [-0.011%; +0.011%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	[373.370µs; 373.448µs] or [-0.010%; +0.010%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	[2677752.278op/s; 2678308.229op/s] or [-0.010%; +0.010%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	[168.813µs; 168.891µs] or [-0.023%; +0.023%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	[5921019.238op/s; 5923732.949op/s] or [-0.023%; +0.023%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	execution_time	[36.357µs; 36.380µs] or [-0.031%; +0.031%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	throughput	[27487660.233op/s; 27504851.364op/s] or [-0.031%; +0.031%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	execution_time	[46.278µs; 46.309µs] or [-0.033%; +0.033%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	throughput	[21594575.942op/s; 21608412.377op/s] 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	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	34.108µs	34.688µs ± 0.977µs	34.251µs ± 0.092µs	34.392µs	36.748µs	36.809µs	38.228µs	11.61%	1.724	1.229	2.81%	0.069µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
redis/obfuscate_redis_string	execution_time	[34.553µs; 34.824µs] or [-0.390%; +0.390%]	None	None	None

Group 5

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	2.306µs	2.364µs ± 0.015µs	2.366µs ± 0.005µs	2.370µs	2.382µs	2.385µs	2.391µs	1.05%	-1.983	4.816	0.63%	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	[2.362µs; 2.366µs] or [-0.087%; +0.087%]	None	None	None

Group 6

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	122.039µs	123.211µs ± 1.230µs	122.957µs ± 0.339µs	123.329µs	124.949µs	127.794µs	134.227µs	9.17%	5.242	37.613	1.00%	0.087µs	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	[123.040µs; 123.381µs] or [-0.138%; +0.138%]	None	None	None

Group 7

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	10.651ms ± 0.011ms	10.650ms ± 0.007ms	10.659ms	10.669ms	10.679ms	10.685ms	0.33%	0.482	0.039	0.10%	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	[10.650ms; 10.653ms] or [-0.014%; +0.014%]	None	None	None

Group 8

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	89.470µs	89.797µs ± 0.247µs	89.769µs ± 0.045µs	89.824µs	89.917µs	90.152µs	93.041µs	3.64%	11.420	146.663	0.27%	0.017µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
sql/obfuscate_sql_string	execution_time	[89.763µs; 89.831µs] or [-0.038%; +0.038%]	None	None	None

Group 9

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	6.145ms	6.394ms ± 0.060ms	6.406ms ± 0.021ms	6.426ms	6.453ms	6.479ms	6.571ms	2.58%	-1.995	5.289	0.94%	0.004ms	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	[6.385ms; 6.402ms] or [-0.130%; +0.130%]	None	None	None

Group 10

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	5.011µs	5.067µs ± 0.028µs	5.066µs ± 0.027µs	5.092µs	5.108µs	5.114µs	5.118µs	1.03%	0.022	-1.223	0.56%	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	[5.063µs; 5.071µs] or [-0.078%; +0.078%]	None	None	None

Group 11

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	171.347ns	175.423ns ± 3.016ns	175.188ns ± 2.195ns	177.188ns	179.709ns	184.559ns	192.639ns	9.96%	1.450	4.921	1.71%	0.213ns	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	[175.005ns; 175.841ns] or [-0.238%; +0.238%]	None	None	None

Group 12

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	61.845ms	62.561ms ± 2.466ms	62.250ms ± 0.072ms	62.320ms	62.502ms	81.122ms	84.174ms	35.22%	7.982	62.272	3.93%	0.174ms	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	[62.220ms; 62.903ms] or [-0.546%; +0.546%]	None	None	None

Group 13

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	13.889ms	13.929ms ± 0.024ms	13.926ms ± 0.010ms	13.936ms	13.955ms	14.030ms	14.104ms	1.28%	3.235	16.374	0.17%	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	[13.926ms; 13.933ms] or [-0.024%; +0.024%]	None	None	None

Group 14

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	185.564µs	186.024µs ± 0.302µs	185.975µs ± 0.172µs	186.164µs	186.457µs	186.992µs	188.022µs	1.10%	2.422	11.547	0.16%	0.021µs	1	200
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	5318513.826op/s	5375666.170op/s ± 8700.393op/s	5377055.968op/s ± 4988.818op/s	5381951.371op/s	5385828.284op/s	5387155.231op/s	5388975.584op/s	0.22%	-2.385	11.251	0.16%	615.211op/s	1	200
normalization/normalize_name/normalize_name/bad-name	execution_time	17.766µs	17.846µs ± 0.052µs	17.836µs ± 0.015µs	17.857µs	17.909µs	17.959µs	18.399µs	3.16%	6.406	64.450	0.29%	0.004µs	1	200
normalization/normalize_name/normalize_name/bad-name	throughput	54349861.476op/s	56036550.231op/s ± 159305.525op/s	56066673.169op/s ± 47813.588op/s	56100856.150op/s	56192925.522op/s	56278913.528op/s	56288355.311op/s	0.40%	-6.190	61.307	0.28%	11264.602op/s	1	200
normalization/normalize_name/normalize_name/good	execution_time	10.532µs	10.573µs ± 0.020µs	10.569µs ± 0.013µs	10.586µs	10.610µs	10.624µs	10.668µs	0.93%	0.963	1.663	0.19%	0.001µs	1	200
normalization/normalize_name/normalize_name/good	throughput	93742077.197op/s	94583313.633op/s ± 181728.788op/s	94612160.029op/s ± 112775.886op/s	94716029.506op/s	94817917.096op/s	94859223.118op/s	94952347.589op/s	0.36%	-0.948	1.597	0.19%	12850.166op/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	[185.982µs; 186.066µs] or [-0.023%; +0.023%]	None	None	None
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	[5374460.379op/s; 5376871.961op/s] or [-0.022%; +0.022%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	execution_time	[17.838µs; 17.853µs] or [-0.040%; +0.040%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	throughput	[56014472.018op/s; 56058628.445op/s] or [-0.039%; +0.039%]	None	None	None
normalization/normalize_name/normalize_name/good	execution_time	[10.570µs; 10.576µs] or [-0.027%; +0.027%]	None	None	None
normalization/normalize_name/normalize_name/good	throughput	[94558127.771op/s; 94608499.495op/s] or [-0.027%; +0.027%]	None	None	None

Group 15

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	239.310ns	252.063ns ± 13.837ns	246.426ns ± 4.761ns	259.272ns	283.075ns	290.142ns	290.491ns	17.88%	1.405	0.840	5.48%	0.978ns	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	[250.145ns; 253.981ns] or [-0.761%; +0.761%]	None	None	None

Group 16

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	17.775µs	25.866µs ± 10.039µs	18.069µs ± 0.173µs	35.381µs	43.804µs	48.316µs	70.140µs	288.18%	0.963	0.528	38.71%	0.710µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
two way interface	execution_time	[24.475µs; 27.257µs] or [-5.379%; +5.379%]	None	None	None

Group 17

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	5873b54	1761766543	paullgdc/trace-utils/remove_clone_on_spantext

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	1.171µs	3.228µs ± 1.460µs	2.992µs ± 0.031µs	3.028µs	3.654µs	13.925µs	15.359µs	413.38%	7.359	55.482	45.11%	0.103µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
write only interface	execution_time	[3.025µs; 3.430µs] or [-6.267%; +6.267%]	None	None	None

Baseline

Omitted due to size.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 95.60440% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.94%. Comparing base (c365938) to head (5873b54).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1266      +/-   ##
==========================================
+ Coverage   71.91%   71.94%   +0.02%     
==========================================
  Files         368      368              
  Lines       58146    58111      -35     
==========================================
- Hits        41814    41806       -8     
+ Misses      16332    16305      -27     

Components	Coverage Δ
datadog-crashtracker	50.65% <ø> (-0.03%)	⬇️
datadog-crashtracker-ffi	5.86% <ø> (ø)
datadog-alloc	98.73% <ø> (ø)
data-pipeline	88.16% <ø> (+0.29%)	⬆️
data-pipeline-ffi	88.19% <ø> (ø)
ddcommon	84.30% <80.00%> (-0.02%)	⬇️
ddcommon-ffi	73.90% <80.00%> (+0.05%)	⬆️
ddtelemetry	60.02% <ø> (+0.03%)	⬆️
ddtelemetry-ffi	21.24% <ø> (ø)
dogstatsd-client	83.26% <ø> (ø)
datadog-ipc	82.39% <ø> (ø)
datadog-profiling	76.90% <ø> (ø)
datadog-profiling-ffi	62.12% <ø> (ø)
datadog-sidecar	36.51% <0.00%> (-0.74%)	⬇️
datdog-sidecar-ffi	10.11% <0.00%> (-3.60%)	⬇️
spawn-worker	55.18% <ø> (ø)
tinybytes	92.44% <ø> (ø)
datadog-trace-normalization	98.24% <ø> (ø)
datadog-trace-obfuscation	94.17% <ø> (ø)
datadog-trace-protobuf	59.65% <ø> (ø)
datadog-trace-utils	90.19% <100.00%> (+0.19%)	⬆️
datadog-tracer-flare	62.42% <ø> (+1.38%)	⬆️
datadog-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.a	71.36 MB	71.38 MB	+.03% (+22.58 KB) 🔍
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.so	7.25 MB	7.25 MB	0% (0 B) 👌

aarch64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.so	9.20 MB	9.20 MB	+0% (+72 B) 👌
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.a	83.70 MB	83.73 MB	+.03% (+33.15 KB) 🔍

libdatadog-x64-windows

Artifact	Baseline	Commit	Change
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.dll	18.55 MB	18.58 MB	+.16% (+31.00 KB) 🔍
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.lib	65.77 KB	65.77 KB	0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.pdb	129.26 MB	129.36 MB	+.07% (+96.00 KB) 🔍
/libdatadog-x64-windows/debug/static/datadog_profiling_ffi.lib	678.14 MB	679.19 MB	+.15% (+1.04 MB) 🔍
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.dll	5.93 MB	5.94 MB	+.09% (+6.00 KB) 🔍
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.lib	65.77 KB	65.77 KB	0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.pdb	17.51 MB	17.52 MB	+.04% (+8.00 KB) 🔍
/libdatadog-x64-windows/release/static/datadog_profiling_ffi.lib	32.46 MB	32.48 MB	+.06% (+22.28 KB) 🔍

libdatadog-x86-windows

Artifact	Baseline	Commit	Change
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.dll	15.81 MB	15.84 MB	+.16% (+26.00 KB) 🔍
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.lib	66.79 KB	66.79 KB	0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.pdb	131.44 MB	131.57 MB	+.09% (+128.00 KB) 🔍
/libdatadog-x86-windows/debug/static/datadog_profiling_ffi.lib	666.67 MB	667.47 MB	+.11% (+817.58 KB) 🔍
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.dll	4.55 MB	4.55 MB	+.06% (+3.00 KB) 🔍
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.lib	66.79 KB	66.79 KB	0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.pdb	18.66 MB	18.67 MB	+.08% (+16.00 KB) 🔍
/libdatadog-x86-windows/release/static/datadog_profiling_ffi.lib	30.52 MB	30.53 MB	+.03% (+12.03 KB) 🔍

x86_64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.a	63.96 MB	63.98 MB	+.03% (+25.93 KB) 🔍
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.so	8.56 MB	8.56 MB	--.04% (-4.00 KB) 💪

x86_64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.a	78.42 MB	78.47 MB	+.06% (+48.53 KB) 🔍
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.so	9.91 MB	9.91 MB	+.03% (+4.03 KB) 🔍