[profiling] Support OTel signal

[danielsn]

What does this PR do?

Initial implementation of OTel protocol for libdatadog.

Motivation

OTel is coming, we should see how hard it is to create the signal, and what gotchas we run into

Additional Notes

• Otel is a moving target, this will need to change as the OTel format does.
• I hardwired it to FFI. If you use this branch, you get OTel but not pprof
• Still working on how best to support links / endpoints.

How to test the change?

• I had claude write tests for me. That should be sufficient, right?

[pr-commenter[bot]]

Benchmarks

Comparison

Benchmark execution time: 2025-09-16 20:10:07

Comparing candidate commit d77157cb in PR branch dsn/otel-proto with baseline commit 0262f08e in branch main.

Found 10 performance improvements and 1 performance regressions! Performance is the same for 42 metrics, 2 unstable metrics.

scenario:benching serializing traces from their internal representation to msgpack

• 🟥 execution_time [+780.329µs; +792.783µs] or [+5.549%; +5.638%]

scenario:credit_card/is_card_number/37828224631000521389798

• 🟩 execution_time [-7.100µs; -7.055µs] or [-13.604%; -13.517%]
• 🟩 throughput [+2994883.368op/s; +3016823.837op/s] or [+15.632%; +15.746%]

scenario:credit_card/is_card_number_no_luhn/ 378282246310005

• 🟩 execution_time [-5.406µs; -5.359µs] or [-9.254%; -9.174%]
• 🟩 throughput [+1730394.044op/s; +1744229.848op/s] or [+10.108%; +10.189%]

scenario:credit_card/is_card_number_no_luhn/378282246310005

• 🟩 execution_time [-5.072µs; -5.019µs] or [-9.250%; -9.154%]
• 🟩 throughput [+1839105.105op/s; +1856741.598op/s] or [+10.085%; +10.181%]

scenario:credit_card/is_card_number_no_luhn/37828224631000521389798

• 🟩 execution_time [-7.138µs; -7.099µs] or [-13.669%; -13.595%]
• 🟩 throughput [+3013560.480op/s; +3032252.834op/s] or [+15.736%; +15.834%]

scenario:normalization/normalize_name/normalize_name/good

• 🟩 execution_time [-661.954ns; -636.195ns] or [-6.309%; -6.063%]
• 🟩 throughput [+6162704.325op/s; +6414104.853op/s] or [+6.466%; +6.730%]

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	d77157cb	1758032199	dsn/otel-proto

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	159.100µs	159.804µs ± 0.262µs	159.751µs ± 0.122µs	159.901µs	160.215µs	160.729µs	161.125µs	0.86%	1.575	5.008	0.16%	0.019µs	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	[159.768µs; 159.841µs] or [-0.023%; +0.023%]	None	None	None

Group 2

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	60.712ms	61.302ms ± 2.422ms	61.000ms ± 0.070ms	61.065ms	61.294ms	78.609ms	83.191ms	36.38%	8.060	63.769	3.94%	0.171ms	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	[60.966ms; 61.637ms] or [-0.547%; +0.547%]	None	None	None

Group 3

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	3.892µs	3.911µs ± 0.003µs	3.911µs ± 0.001µs	3.912µs	3.915µs	3.917µs	3.919µs	0.22%	-1.450	14.819	0.06%	0.000µs	1	200
credit_card/is_card_number/	throughput	255167923.845op/s	255705755.671op/s ± 165212.527op/s	255721697.986op/s ± 94688.911op/s	255812794.256op/s	255868273.050op/s	255912319.963op/s	256946318.116op/s	0.48%	1.479	15.045	0.06%	11682.290op/s	1	200
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	77.044µs	77.843µs ± 0.832µs	77.642µs ± 0.399µs	78.096µs	79.484µs	80.904µs	81.639µs	5.15%	2.079	5.042	1.07%	0.059µs	1	200
credit_card/is_card_number/ 3782-8224-6310-005	throughput	12249004.602op/s	12847842.100op/s ± 134404.503op/s	12879561.436op/s ± 66535.732op/s	12943179.529op/s	12970753.193op/s	12978759.604op/s	12979583.015op/s	0.78%	-1.995	4.602	1.04%	9503.834op/s	1	200
credit_card/is_card_number/ 378282246310005	execution_time	70.826µs	71.110µs ± 0.303µs	71.011µs ± 0.138µs	71.210µs	71.614µs	72.092µs	72.929µs	2.70%	2.077	6.747	0.42%	0.021µs	1	200
credit_card/is_card_number/ 378282246310005	throughput	13711958.432op/s	14062919.250op/s ± 59354.498op/s	14082387.270op/s ± 27332.276op/s	14106811.474op/s	14115572.087op/s	14118324.484op/s	14119185.149op/s	0.26%	-2.022	6.329	0.42%	4196.997op/s	1	200
credit_card/is_card_number/37828224631	execution_time	3.897µs	3.912µs ± 0.003µs	3.912µs ± 0.002µs	3.913µs	3.916µs	3.918µs	3.921µs	0.21%	-0.616	3.923	0.07%	0.000µs	1	200
credit_card/is_card_number/37828224631	throughput	255063209.192op/s	255624019.024op/s ± 180178.139op/s	255606269.185op/s ± 107769.518op/s	255736787.737op/s	255910278.920op/s	255942274.702op/s	256623820.090op/s	0.40%	0.628	3.977	0.07%	12740.518op/s	1	200
credit_card/is_card_number/378282246310005	execution_time	67.573µs	67.946µs ± 0.374µs	67.810µs ± 0.152µs	68.067µs	68.650µs	69.292µs	70.070µs	3.33%	2.174	6.477	0.55%	0.026µs	1	200
credit_card/is_card_number/378282246310005	throughput	14271406.819op/s	14717923.563op/s ± 80030.592op/s	14747139.232op/s ± 33075.217op/s	14773732.375op/s	14786752.473op/s	14794108.895op/s	14798817.625op/s	0.35%	-2.114	6.061	0.54%	5659.017op/s	1	200
credit_card/is_card_number/37828224631000521389798	execution_time	44.691µs	45.117µs ± 0.160µs	45.115µs ± 0.103µs	45.218µs	45.335µs	45.421µs	45.934µs	1.82%	0.937	4.084	0.35%	0.011µs	1	200
credit_card/is_card_number/37828224631000521389798	throughput	21770530.566op/s	22164655.906op/s ± 78327.160op/s	22165709.684op/s ± 50479.021op/s	22215289.153op/s	22279395.527op/s	22306235.015op/s	22375989.394op/s	0.95%	-0.883	3.827	0.35%	5538.567op/s	1	200
credit_card/is_card_number/x371413321323331	execution_time	6.027µs	6.037µs ± 0.016µs	6.034µs ± 0.002µs	6.037µs	6.044µs	6.110µs	6.172µs	2.29%	5.599	35.158	0.26%	0.001µs	1	200
credit_card/is_card_number/x371413321323331	throughput	162013770.584op/s	165638597.481op/s ± 429132.261op/s	165721265.827op/s ± 60242.741op/s	165775929.337op/s	165856455.900op/s	165883885.356op/s	165909915.319op/s	0.11%	-5.554	34.528	0.26%	30344.233op/s	1	200
credit_card/is_card_number_no_luhn/	execution_time	3.892µs	3.911µs ± 0.003µs	3.911µs ± 0.001µs	3.912µs	3.915µs	3.919µs	3.923µs	0.30%	-0.695	13.706	0.07%	0.000µs	1	200
credit_card/is_card_number_no_luhn/	throughput	254939439.171op/s	255697414.344op/s ± 172442.412op/s	255713821.333op/s ± 78648.903op/s	255791074.414op/s	255882401.932op/s	255918260.658op/s	256920810.616op/s	0.47%	0.726	13.878	0.07%	12193.520op/s	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	65.027µs	65.422µs ± 0.045µs	65.422µs ± 0.021µs	65.443µs	65.480µs	65.511µs	65.621µs	0.30%	-2.804	30.077	0.07%	0.003µs	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	15239025.611op/s	15285434.494op/s ± 10510.322op/s	15285462.761op/s ± 5015.621op/s	15290510.328op/s	15296025.634op/s	15299284.096op/s	15378224.414op/s	0.61%	2.854	30.522	0.07%	743.192op/s	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	52.955µs	53.031µs ± 0.030µs	53.033µs ± 0.018µs	53.047µs	53.081µs	53.103µs	53.140µs	0.20%	0.208	0.729	0.06%	0.002µs	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	18818159.823op/s	18856787.411op/s ± 10765.547op/s	18856262.898op/s ± 6324.564op/s	18862786.081op/s	18875029.751op/s	18881777.501op/s	18883975.059op/s	0.15%	-0.203	0.723	0.06%	761.239op/s	1	200
credit_card/is_card_number_no_luhn/37828224631	execution_time	3.895µs	3.911µs ± 0.003µs	3.911µs ± 0.001µs	3.912µs	3.915µs	3.917µs	3.918µs	0.18%	-0.868	7.582	0.06%	0.000µs	1	200
credit_card/is_card_number_no_luhn/37828224631	throughput	255236415.726op/s	255695809.707op/s ± 165490.851op/s	255705670.370op/s ± 76756.290op/s	255776504.972op/s	255933610.743op/s	255985402.668op/s	256754702.925op/s	0.41%	0.886	7.687	0.06%	11701.970op/s	1	200
credit_card/is_card_number_no_luhn/378282246310005	execution_time	49.733µs	49.790µs ± 0.031µs	49.784µs ± 0.018µs	49.803µs	49.851µs	49.881µs	49.930µs	0.29%	1.150	1.952	0.06%	0.002µs	1	200
credit_card/is_card_number_no_luhn/378282246310005	throughput	20028149.015op/s	20084455.501op/s ± 12431.868op/s	20086581.159op/s ± 7275.504op/s	20093483.183op/s	20099639.116op/s	20105385.852op/s	20107276.823op/s	0.10%	-1.145	1.933	0.06%	879.066op/s	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	44.700µs	45.099µs ± 0.134µs	45.114µs ± 0.095µs	45.197µs	45.306µs	45.370µs	45.383µs	0.60%	-0.236	-0.418	0.30%	0.009µs	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	22034857.557op/s	22173459.771op/s ± 65880.455op/s	22166265.169op/s ± 46475.408op/s	22222946.316op/s	22284005.358op/s	22319862.965op/s	22371193.320op/s	0.92%	0.249	-0.407	0.30%	4658.452op/s	1	200
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	6.027µs	6.036µs ± 0.009µs	6.035µs ± 0.003µs	6.037µs	6.041µs	6.100µs	6.109µs	1.23%	6.142	43.556	0.15%	0.001µs	1	200
credit_card/is_card_number_no_luhn/x371413321323331	throughput	163692588.677op/s	165682734.275op/s ± 249521.895op/s	165699701.747op/s ± 72236.748op/s	165780212.762op/s	165884312.412op/s	165911709.317op/s	165929015.227op/s	0.14%	-6.106	43.207	0.15%	17643.862op/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	[3.910µs; 3.911µs] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number/	throughput	[255682858.804op/s; 255728652.538op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	[77.727µs; 77.958µs] or [-0.148%; +0.148%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	throughput	[12829214.928op/s; 12866469.271op/s] or [-0.145%; +0.145%]	None	None	None
credit_card/is_card_number/ 378282246310005	execution_time	[71.068µs; 71.152µs] or [-0.059%; +0.059%]	None	None	None
credit_card/is_card_number/ 378282246310005	throughput	[14054693.287op/s; 14071145.212op/s] or [-0.058%; +0.058%]	None	None	None
credit_card/is_card_number/37828224631	execution_time	[3.912µs; 3.912µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/37828224631	throughput	[255599048.067op/s; 255648989.981op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number/378282246310005	execution_time	[67.895µs; 67.998µs] or [-0.076%; +0.076%]	None	None	None
credit_card/is_card_number/378282246310005	throughput	[14706832.093op/s; 14729015.033op/s] or [-0.075%; +0.075%]	None	None	None
credit_card/is_card_number/37828224631000521389798	execution_time	[45.095µs; 45.140µs] or [-0.049%; +0.049%]	None	None	None
credit_card/is_card_number/37828224631000521389798	throughput	[22153800.515op/s; 22175511.297op/s] or [-0.049%; +0.049%]	None	None	None
credit_card/is_card_number/x371413321323331	execution_time	[6.035µs; 6.039µs] or [-0.036%; +0.036%]	None	None	None
credit_card/is_card_number/x371413321323331	throughput	[165579123.877op/s; 165698071.085op/s] or [-0.036%; +0.036%]	None	None	None
credit_card/is_card_number_no_luhn/	execution_time	[3.911µs; 3.911µs] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/	throughput	[255673515.484op/s; 255721313.204op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	[65.416µs; 65.428µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	[15283977.864op/s; 15286891.123op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	[53.027µs; 53.036µs] or [-0.008%; +0.008%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	[18855295.409op/s; 18858279.412op/s] or [-0.008%; +0.008%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	execution_time	[3.911µs; 3.911µs] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	throughput	[255672874.266op/s; 255718745.147op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	execution_time	[49.785µs; 49.794µs] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	throughput	[20082732.563op/s; 20086178.438op/s] or [-0.009%; +0.009%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	[45.081µs; 45.118µs] or [-0.041%; +0.041%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	[22164329.374op/s; 22182590.169op/s] or [-0.041%; +0.041%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	[6.034µs; 6.037µs] or [-0.021%; +0.021%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	throughput	[165648152.940op/s; 165717315.610op/s] or [-0.021%; +0.021%]	None	None	None

Group 4

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	6.199ms	6.269ms ± 0.060ms	6.254ms ± 0.017ms	6.280ms	6.362ms	6.404ms	6.854ms	9.60%	5.216	45.151	0.95%	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	[6.260ms; 6.277ms] or [-0.132%; +0.132%]	None	None	None

Group 5

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	185.471µs	185.960µs ± 0.477µs	185.883µs ± 0.152µs	186.045µs	186.394µs	188.121µs	190.849µs	2.67%	6.460	57.527	0.26%	0.034µs	1	200
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	5239745.196op/s	5377534.216op/s ± 13582.913op/s	5379734.259op/s ± 4394.749op/s	5383739.673op/s	5388478.919op/s	5389773.489op/s	5391674.123op/s	0.22%	-6.326	55.570	0.25%	960.457op/s	1	200
normalization/normalize_name/normalize_name/bad-name	execution_time	17.195µs	17.420µs ± 0.137µs	17.404µs ± 0.092µs	17.514µs	17.675µs	17.810µs	17.849µs	2.56%	0.665	0.019	0.78%	0.010µs	1	200
normalization/normalize_name/normalize_name/bad-name	throughput	56026881.698op/s	57407606.879op/s ± 447870.258op/s	57458399.532op/s ± 306781.178op/s	57762393.195op/s	58013413.803op/s	58132224.153op/s	58157962.843op/s	1.22%	-0.629	-0.051	0.78%	31669.210op/s	1	200
normalization/normalize_name/normalize_name/good	execution_time	9.802µs	9.844µs ± 0.078µs	9.810µs ± 0.004µs	9.845µs	9.985µs	10.205µs	10.430µs	6.33%	3.766	19.312	0.79%	0.006µs	1	200
normalization/normalize_name/normalize_name/good	throughput	95873137.152op/s	101595850.788op/s ± 784754.092op/s	101941558.694op/s ± 36583.732op/s	101965918.476op/s	102000144.992op/s	102019523.983op/s	102021902.779op/s	0.08%	-3.606	17.585	0.77%	55490.494op/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	[185.894µs; 186.026µs] or [-0.036%; +0.036%]	None	None	None
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	[5375651.755op/s; 5379416.677op/s] or [-0.035%; +0.035%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	execution_time	[17.401µs; 17.439µs] or [-0.109%; +0.109%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	throughput	[57345536.369op/s; 57469677.390op/s] or [-0.108%; +0.108%]	None	None	None
normalization/normalize_name/normalize_name/good	execution_time	[9.833µs; 9.854µs] or [-0.110%; +0.110%]	None	None	None
normalization/normalize_name/normalize_name/good	throughput	[101487091.418op/s; 101704610.157op/s] or [-0.107%; +0.107%]	None	None	None

Group 6

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	2.325µs	2.374µs ± 0.021µs	2.369µs ± 0.004µs	2.381µs	2.402µs	2.412µs	2.588µs	9.22%	5.451	54.707	0.87%	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	[2.371µs; 2.377µs] or [-0.121%; +0.121%]	None	None	None

Group 7

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	4.941µs	5.020µs ± 0.045µs	5.028µs ± 0.050µs	5.050µs	5.087µs	5.093µs	5.094µs	1.32%	0.141	-1.411	0.90%	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	[5.014µs; 5.027µs] or [-0.125%; +0.125%]	None	None	None

Group 8

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	88.990µs	89.231µs ± 0.161µs	89.215µs ± 0.088µs	89.306µs	89.409µs	89.645µs	90.677µs	1.64%	4.131	32.318	0.18%	0.011µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
sql/obfuscate_sql_string	execution_time	[89.209µs; 89.254µs] or [-0.025%; +0.025%]	None	None	None

Group 9

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	17.326µs	24.950µs ± 10.165µs	17.519µs ± 0.099µs	34.681µs	44.581µs	54.216µs	73.377µs	318.85%	1.228	1.571	40.64%	0.719µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
two way interface	execution_time	[23.542µs; 26.359µs] or [-5.646%; +5.646%]	None	None	None

Group 10

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	1.241µs	3.246µs ± 1.484µs	3.029µs ± 0.022µs	3.050µs	3.690µs	14.024µs	15.871µs	423.97%	7.431	56.328	45.59%	0.105µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
write only interface	execution_time	[3.040µs; 3.452µs] or [-6.335%; +6.335%]	None	None	None

Group 11

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	239.319ns	248.620ns ± 12.082ns	243.986ns ± 3.103ns	248.578ns	273.759ns	291.953ns	292.118ns	19.73%	2.123	3.770	4.85%	0.854ns	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	[246.946ns; 250.295ns] or [-0.673%; +0.673%]	None	None	None

Group 12

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	14.817ms	14.849ms ± 0.030ms	14.843ms ± 0.009ms	14.854ms	14.895ms	14.972ms	15.077ms	1.58%	3.919	20.471	0.20%	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	[14.845ms; 14.853ms] or [-0.028%; +0.028%]	None	None	None

Group 13

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	534.245µs	535.078µs ± 0.440µs	535.040µs ± 0.254µs	535.300µs	535.730µs	536.159µs	538.353µs	0.62%	2.218	14.034	0.08%	0.031µs	1	200
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	1857516.265op/s	1868888.820op/s ± 1535.105op/s	1869020.166op/s ± 886.348op/s	1869834.856op/s	1871009.192op/s	1871374.644op/s	1871801.628op/s	0.15%	-2.191	13.785	0.08%	108.548op/s	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	379.766µs	380.536µs ± 1.173µs	380.358µs ± 0.194µs	380.616µs	381.114µs	388.949µs	390.083µs	2.56%	7.147	53.337	0.31%	0.083µs	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	2563558.987op/s	2627894.439op/s ± 7928.611op/s	2629105.062op/s ± 1339.995op/s	2630280.961op/s	2632053.290op/s	2632998.549op/s	2633202.856op/s	0.16%	-7.107	52.915	0.30%	560.637op/s	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	194.933µs	195.305µs ± 0.152µs	195.306µs ± 0.103µs	195.409µs	195.548µs	195.641µs	195.791µs	0.25%	0.190	-0.142	0.08%	0.011µs	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	5107489.811op/s	5120188.809op/s ± 3987.675op/s	5120168.330op/s ± 2711.243op/s	5122889.181op/s	5126499.512op/s	5128437.784op/s	5129967.040op/s	0.19%	-0.186	-0.146	0.08%	281.971op/s	1	200
normalization/normalize_service/normalize_service/[empty string]	execution_time	37.508µs	37.661µs ± 0.057µs	37.664µs ± 0.042µs	37.704µs	37.756µs	37.775µs	37.811µs	0.39%	-0.104	-0.372	0.15%	0.004µs	1	200
normalization/normalize_service/normalize_service/[empty string]	throughput	26447613.260op/s	26552579.925op/s ± 39846.558op/s	26550573.232op/s ± 29345.861op/s	26580715.027op/s	26618700.195op/s	26648870.384op/s	26660809.752op/s	0.42%	0.112	-0.369	0.15%	2817.577op/s	1	200
normalization/normalize_service/normalize_service/test_ASCII	execution_time	45.794µs	45.884µs ± 0.050µs	45.880µs ± 0.034µs	45.913µs	45.964µs	46.053µs	46.081µs	0.44%	0.913	1.487	0.11%	0.004µs	1	200
normalization/normalize_service/normalize_service/test_ASCII	throughput	21700948.008op/s	21794236.692op/s ± 23725.217op/s	21795911.205op/s ± 16054.351op/s	21812772.504op/s	21825975.760op/s	21834316.493op/s	21836932.013op/s	0.19%	-0.904	1.458	0.11%	1677.626op/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	[535.017µs; 535.139µs] or [-0.011%; +0.011%]	None	None	None
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	[1868676.069op/s; 1869101.571op/s] or [-0.011%; +0.011%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	[380.374µs; 380.699µs] or [-0.043%; +0.043%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	[2626795.610op/s; 2628993.268op/s] or [-0.042%; +0.042%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	[195.284µs; 195.326µs] or [-0.011%; +0.011%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	[5119636.156op/s; 5120741.462op/s] or [-0.011%; +0.011%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	execution_time	[37.653µs; 37.669µs] or [-0.021%; +0.021%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	throughput	[26547057.575op/s; 26558102.274op/s] or [-0.021%; +0.021%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	execution_time	[45.877µs; 45.891µs] or [-0.015%; +0.015%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	throughput	[21790948.605op/s; 21797524.779op/s] or [-0.015%; +0.015%]	None	None	None

Group 14

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	33.837µs	34.492µs ± 1.135µs	33.964µs ± 0.071µs	34.139µs	36.889µs	36.940µs	38.508µs	13.38%	1.731	1.202	3.28%	0.080µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
redis/obfuscate_redis_string	execution_time	[34.335µs; 34.649µs] or [-0.456%; +0.456%]	None	None	None

Group 15

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	d77157cb	1758032199	dsn/otel-proto

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	8.250ms	8.267ms ± 0.010ms	8.265ms ± 0.005ms	8.272ms	8.287ms	8.305ms	8.315ms	0.61%	1.764	4.747	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	[8.265ms; 8.268ms] or [-0.018%; +0.018%]	None	None	None

Baseline

Omitted due to size.

[datadog-datadog-prod-us1[bot]]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: d77157c | Docs | Was this helpful? Give us feedback!}

[codecov-commenter]

Codecov Report

:x: Patch coverage is 97.24771% with 24 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 71.96%. Comparing base (4e1d7bb) to head (d77157c). :warning: Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1181      +/-   ##
==========================================
+ Coverage   71.61%   71.96%   +0.34%     
==========================================
  Files         354      362       +8     
  Lines       55939    56838     +899     
==========================================
+ Hits        40063    40903     +840     
- Misses      15876    15935      +59     

Components	Coverage Δ
datadog-crashtracker	49.30% <ø> (-0.03%)	:arrow_down:
datadog-crashtracker-ffi	5.93% <ø> (ø)
datadog-alloc	98.73% <ø> (ø)
data-pipeline	90.21% <ø> (ø)
data-pipeline-ffi	88.19% <ø> (ø)
ddcommon	84.29% <ø> (ø)
ddcommon-ffi	73.84% <ø> (ø)
ddtelemetry	59.98% <ø> (ø)
ddtelemetry-ffi	21.24% <ø> (ø)
dogstatsd-client	83.26% <ø> (ø)
datadog-ipc	82.39% <ø> (ø)
datadog-profiling	79.38% <97.35%> (+2.48%)	:arrow_up:
datadog-profiling-ffi	62.07% <0.00%> (-0.05%)	:arrow_down:
datadog-sidecar	36.64% <ø> (-0.42%)	:arrow_down:
datdog-sidecar-ffi	9.26% <ø> (-2.01%)	:arrow_down:
spawn-worker	55.35% <ø> (ø)
tinybytes	92.22% <ø> (ø)
datadog-trace-normalization	98.24% <ø> (ø)
datadog-trace-obfuscation	94.17% <ø> (ø)
datadog-trace-protobuf	77.10% <ø> (ø)
datadog-trace-utils	89.78% <ø> (ø)
datadog-tracer-flare	53.15% <ø> (-2.94%)	:arrow_down:
datadog-log	76.31% <ø> (ø)

:rocket: New features to boost your workflow:

• :snowflake: Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[gyuheon0h]

Artifact Size Benchmark Report

aarch64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.a	70.47 MB	86.25 MB	+22.39% (+15.78 MB) 🚨
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.so	6.75 MB	7.00 MB	+3.69% (+256.00 KB) ⚠️

aarch64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.a	82.75 MB	99.24 MB	+19.92% (+16.48 MB) 🚨
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.so	8.80 MB	9.08 MB	+3.27% (+295.19 KB) ⚠️

libdatadog-x64-windows

Artifact	Baseline	Commit	Change
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.dll	17.89 MB	18.88 MB	+5.54% (+1016.00 KB) 🚨
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.lib	65.01 KB	65.01 KB	0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.pdb	124.63 MB	128.14 MB	+2.81% (+3.50 MB) ⚠️
/libdatadog-x64-windows/debug/static/datadog_profiling_ffi.lib	647.28 MB	657.56 MB	+1.58% (+10.28 MB) ⚠️
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.dll	5.55 MB	5.93 MB	+6.92% (+393.50 KB) 🚨
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.lib	65.01 KB	65.01 KB	0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.pdb	17.23 MB	18.69 MB	+8.47% (+1.46 MB) 🚨
/libdatadog-x64-windows/release/static/datadog_profiling_ffi.lib	31.57 MB	38.09 MB	+20.63% (+6.51 MB) 🚨

libdatadog-x86-windows

Artifact	Baseline	Commit	Change
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.dll	15.23 MB	15.94 MB	+4.65% (+726.00 KB) ⚠️
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.lib	66.01 KB	66.01 KB	0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.pdb	126.82 MB	130.41 MB	+2.83% (+3.59 MB) ⚠️
/libdatadog-x86-windows/debug/static/datadog_profiling_ffi.lib	637.65 MB	647.35 MB	+1.52% (+9.69 MB) ⚠️
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.dll	4.23 MB	4.53 MB	+7.14% (+310.00 KB) 🚨
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.lib	66.01 KB	66.01 KB	0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.pdb	18.35 MB	19.84 MB	+8.12% (+1.49 MB) 🚨
/libdatadog-x86-windows/release/static/datadog_profiling_ffi.lib	29.68 MB	35.67 MB	+20.18% (+5.99 MB) 🚨

x86_64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.a	63.02 MB	73.85 MB	+17.19% (+10.83 MB) 🚨
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.so	8.06 MB	8.36 MB	+3.77% (+312.00 KB) ⚠️

x86_64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.a	77.38 MB	93.67 MB	+21.05% (+16.29 MB) 🚨
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.so	9.40 MB	9.72 MB	+3.44% (+331.44 KB) ⚠️