perf(profiling): cache TLS in ProfileExporter::new by morrisonlevi · Pull Request #1619 · DataDog/libdatadog

morrisonlevi · 2026-02-20T20:05:04Z

What does this PR do?

Adds a TlsConfig type that wraps a rustls::ClientConfig pre-configured
with the platform certificate verifier. This is cached in ProfileExporter::new
with a global variable, similar to what we did in v25.

Motivation

ProfileExporter::new() called reqwest::ClientBuilder::build(), which
initialized TLS from scratch every time. On Linux this means loading and
parsing the system certificate store from disk on every exporter creation
— an expensive operation that was identified as a performance regression
when upgrading libdatadog from v25 to v28.

Additional Notes

I dropped an explicit API in favor of an implicit one to get the regression
fixed. We can pursue a newer API later if we want.

The new verifier used in reqwest seems to be more expensive than the TLS verifier we used in v25, but since this cached once per process, this should be okay. However, be aware when benchmarking that it will be a bit more expensive than before, especially for short times like 180 seconds. Here it is in PHP after the fix, left is v28, right is this branch:

How to test the change?

Do everything the same, just notice less overhead because it's not
creating the TLS every time (except on MacOS, which does lazy eval
internally in the library on purpose).

github-actions · 2026-02-20T20:10:08Z

Clippy Allow Annotation Report

Comparing clippy allow annotations between branches:

Base Branch: origin/main
PR Branch: origin/PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

Summary by Rule

Rule	Base Branch	PR Branch	Change

Annotation Counts by File

File	Base Branch	PR Branch	Change

Annotation Stats by Crate

Crate	Base Branch	PR Branch	Change
`clippy-annotation-reporter`	5	5	No change (0%)
`datadog-ffe-ffi`	1	1	No change (0%)
`datadog-ipc`	27	27	No change (0%)
`datadog-live-debugger`	6	6	No change (0%)
`datadog-live-debugger-ffi`	10	10	No change (0%)
`datadog-profiling-replayer`	4	4	No change (0%)
`datadog-remote-config`	3	3	No change (0%)
`datadog-sidecar`	59	59	No change (0%)
`libdd-common`	10	10	No change (0%)
`libdd-common-ffi`	12	12	No change (0%)
`libdd-crashtracker`	12	12	No change (0%)
`libdd-data-pipeline`	5	5	No change (0%)
`libdd-ddsketch`	2	2	No change (0%)
`libdd-dogstatsd-client`	1	1	No change (0%)
`libdd-profiling`	13	13	No change (0%)
`libdd-telemetry`	19	19	No change (0%)
`libdd-tinybytes`	4	4	No change (0%)
`libdd-trace-normalization`	2	2	No change (0%)
`libdd-trace-obfuscation`	9	9	No change (0%)
`libdd-trace-utils`	15	15	No change (0%)
Total	219	219	No change (0%)

About This Report

This report tracks Clippy allow annotations for specific rules, showing how they've changed in this PR. Decreasing the number of these annotations generally improves code quality.

pr-commenter · 2026-02-20T20:39:45Z

Benchmarks

Comparison

Benchmark execution time: 2026-02-26 22:46:37

Comparing candidate commit e90e20c in PR branch PROF-13824-ProfileExporter-new-creates-TLS-config-every-time with baseline commit 195b024 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 57 metrics, 2 unstable metrics.

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	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	10.589ms	10.614ms ± 0.016ms	10.612ms ± 0.009ms	10.623ms	10.635ms	10.674ms	10.718ms	1.00%	2.284	11.018	0.15%	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	[10.612ms; 10.616ms] or [-0.020%; +0.020%]	None	None	None

Group 2

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	4.942µs	5.018µs ± 0.043µs	5.005µs ± 0.027µs	5.053µs	5.103µs	5.106µs	5.108µs	2.06%	0.662	-0.857	0.85%	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	[5.012µs; 5.024µs] or [-0.119%; +0.119%]	None	None	None

Group 3

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	533.890µs	534.880µs ± 1.249µs	534.697µs ± 0.305µs	534.997µs	535.664µs	539.807µs	545.878µs	2.09%	6.634	52.137	0.23%	0.088µs	1	200
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	1831910.567op/s	1869589.458op/s ± 4299.054op/s	1870218.601op/s ± 1068.467op/s	1871303.470op/s	1872304.650op/s	1872923.715op/s	1873044.597op/s	0.15%	-6.564	51.270	0.23%	303.989op/s	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	379.977µs	380.676µs ± 0.332µs	380.638µs ± 0.184µs	380.830µs	381.269µs	381.671µs	381.971µs	0.35%	0.912	1.456	0.09%	0.023µs	1	200
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	2617996.816op/s	2626908.497op/s ± 2286.695op/s	2627170.471op/s ± 1266.824op/s	2628406.290op/s	2630079.080op/s	2631257.070op/s	2631735.828op/s	0.17%	-0.905	1.439	0.09%	161.694op/s	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	189.720µs	190.191µs ± 0.175µs	190.179µs ± 0.130µs	190.311µs	190.506µs	190.640µs	190.684µs	0.27%	0.301	-0.055	0.09%	0.012µs	1	200
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	5244268.620op/s	5257872.313op/s ± 4839.395op/s	5258190.290op/s ± 3600.691op/s	5261369.492op/s	5265017.135op/s	5266772.991op/s	5270934.835op/s	0.24%	-0.296	-0.059	0.09%	342.197op/s	1	200
normalization/normalize_service/normalize_service/[empty string]	execution_time	37.392µs	37.545µs ± 0.064µs	37.542µs ± 0.044µs	37.591µs	37.655µs	37.690µs	37.725µs	0.49%	0.079	-0.198	0.17%	0.005µs	1	200
normalization/normalize_service/normalize_service/[empty string]	throughput	26507830.066op/s	26634737.740op/s ± 45563.402op/s	26637148.056op/s ± 31555.104op/s	26664515.518op/s	26712034.089op/s	26734379.860op/s	26743560.771op/s	0.40%	-0.069	-0.201	0.17%	3221.819op/s	1	200
normalization/normalize_service/normalize_service/test_ASCII	execution_time	45.786µs	45.911µs ± 0.146µs	45.891µs ± 0.043µs	45.938µs	46.019µs	46.114µs	47.345µs	3.17%	7.312	64.236	0.32%	0.010µs	1	200
normalization/normalize_service/normalize_service/test_ASCII	throughput	21121366.186op/s	21781600.372op/s ± 67693.278op/s	21790532.945op/s ± 20303.680op/s	21810147.753op/s	21828677.848op/s	21835525.052op/s	21840700.242op/s	0.23%	-7.191	62.671	0.31%	4786.638op/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	[534.707µs; 535.053µs] or [-0.032%; +0.032%]	None	None	None
normalization/normalize_service/normalize_service/A0000000000000000000000000000000000000000000000000...	throughput	[1868993.651op/s; 1870185.266op/s] or [-0.032%; +0.032%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	execution_time	[380.630µs; 380.722µs] or [-0.012%; +0.012%]	None	None	None
normalization/normalize_service/normalize_service/Data🐨dog🐶 繋がっ⛰てて	throughput	[2626591.583op/s; 2627225.411op/s] or [-0.012%; +0.012%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	execution_time	[190.167µs; 190.215µs] or [-0.013%; +0.013%]	None	None	None
normalization/normalize_service/normalize_service/Test Conversion 0f Weird !@#$%^&**() Characters	throughput	[5257201.620op/s; 5258543.007op/s] or [-0.013%; +0.013%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	execution_time	[37.536µs; 37.554µs] or [-0.024%; +0.024%]	None	None	None
normalization/normalize_service/normalize_service/[empty string]	throughput	[26628423.091op/s; 26641052.389op/s] or [-0.024%; +0.024%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	execution_time	[45.891µs; 45.931µs] or [-0.044%; +0.044%]	None	None	None
normalization/normalize_service/normalize_service/test_ASCII	throughput	[21772218.735op/s; 21790982.010op/s] or [-0.043%; +0.043%]	None	None	None

Group 4

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	185.198µs	185.613µs ± 0.215µs	185.598µs ± 0.149µs	185.748µs	186.036µs	186.157µs	186.268µs	0.36%	0.425	-0.125	0.12%	0.015µs	1	200
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	5368621.641op/s	5387573.977op/s ± 6238.539op/s	5387975.306op/s ± 4335.809op/s	5392606.891op/s	5397191.354op/s	5398872.908op/s	5399631.448op/s	0.22%	-0.419	-0.133	0.12%	441.131op/s	1	200
normalization/normalize_name/normalize_name/bad-name	execution_time	17.921µs	18.007µs ± 0.045µs	18.000µs ± 0.029µs	18.033µs	18.083µs	18.119µs	18.257µs	1.43%	1.185	3.738	0.25%	0.003µs	1	200
normalization/normalize_name/normalize_name/bad-name	throughput	54773763.643op/s	55534851.189op/s ± 139434.660op/s	55556554.137op/s ± 89481.766op/s	55630047.315op/s	55718799.673op/s	55773059.566op/s	55799227.814op/s	0.44%	-1.153	3.552	0.25%	9859.519op/s	1	200
normalization/normalize_name/normalize_name/good	execution_time	10.289µs	10.382µs ± 0.033µs	10.375µs ± 0.019µs	10.398µs	10.450µs	10.472µs	10.498µs	1.18%	0.777	1.045	0.31%	0.002µs	1	200
normalization/normalize_name/normalize_name/good	throughput	95260295.148op/s	96324913.028op/s ± 303119.611op/s	96387336.910op/s ± 180729.140op/s	96507294.983op/s	96723264.934op/s	96861492.246op/s	97191532.850op/s	0.83%	-0.754	1.010	0.31%	21433.793op/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	[185.583µs; 185.642µs] or [-0.016%; +0.016%]	None	None	None
normalization/normalize_name/normalize_name/Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Long-.Too-Lo...	throughput	[5386709.376op/s; 5388438.579op/s] or [-0.016%; +0.016%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	execution_time	[18.001µs; 18.013µs] or [-0.035%; +0.035%]	None	None	None
normalization/normalize_name/normalize_name/bad-name	throughput	[55515526.886op/s; 55554175.492op/s] or [-0.035%; +0.035%]	None	None	None
normalization/normalize_name/normalize_name/good	execution_time	[10.377µs; 10.386µs] or [-0.044%; +0.044%]	None	None	None
normalization/normalize_name/normalize_name/good	throughput	[96282903.565op/s; 96366922.491op/s] or [-0.044%; +0.044%]	None	None	None

Group 5

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	33.415µs	33.873µs ± 0.773µs	33.526µs ± 0.045µs	33.610µs	35.463µs	35.518µs	37.498µs	11.85%	1.903	2.497	2.28%	0.055µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
redis/obfuscate_redis_string	execution_time	[33.766µs; 33.980µs] or [-0.316%; +0.316%]	None	None	None

Group 6

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	14.800ms	14.859ms ± 0.031ms	14.854ms ± 0.016ms	14.872ms	14.900ms	14.977ms	15.038ms	1.24%	1.970	7.403	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	[14.854ms; 14.863ms] or [-0.029%; +0.029%]	None	None	None

Group 7

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	17.672µs	25.211µs ± 9.301µs	17.893µs ± 0.125µs	33.610µs	42.277µs	42.822µs	53.462µs	198.79%	0.730	-0.869	36.80%	0.658µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
two way interface	execution_time	[23.922µs; 26.500µs] or [-5.113%; +5.113%]	None	None	None

Group 8

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	145.532µs	147.482µs ± 1.603µs	147.288µs ± 0.446µs	147.715µs	149.053µs	152.753µs	163.582µs	11.06%	6.408	55.621	1.08%	0.113µs	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	[147.260µs; 147.704µs] or [-0.151%; +0.151%]	None	None	None

Group 9

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	3.136ms	3.166ms ± 0.011ms	3.166ms ± 0.007ms	3.173ms	3.185ms	3.194ms	3.200ms	1.09%	0.257	0.270	0.34%	0.001ms	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	[3.164ms; 3.167ms] or [-0.047%; +0.047%]	None	None	None

Group 10

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

scenario	metric	min	mean ± sd	median ± mad	p75	p95	p99	max	peak_to_median_ratio	skewness	kurtosis	cv	sem	runs	sample_size
profile_add_sample2_frames_x1000	execution_time	713.338µs	714.267µs ± 0.545µs	714.197µs ± 0.253µs	714.468µs	714.924µs	715.503µs	719.277µs	0.71%	4.131	34.273	0.08%	0.039µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
profile_add_sample2_frames_x1000	execution_time	[714.191µs; 714.342µs] or [-0.011%; +0.011%]	None	None	None

Group 11

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	1.223µs	3.171µs ± 1.429µs	3.006µs ± 0.025µs	3.026µs	3.280µs	13.776µs	15.134µs	403.52%	7.527	57.184	44.95%	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	[2.973µs; 3.369µs] or [-6.246%; +6.246%]	None	None	None

Group 12

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	47.062ms	47.496ms ± 0.833ms	47.374ms ± 0.054ms	47.442ms	47.534ms	53.091ms	54.623ms	15.30%	7.272	54.105	1.75%	0.059ms	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	[47.381ms; 47.611ms] or [-0.243%; +0.243%]	None	None	None

Group 13

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

scenario	metric	min	mean ± sd	median ± mad	p75	p95	p99	max	peak_to_median_ratio	skewness	kurtosis	cv	sem	runs	sample_size
single_flag_killswitch/rules-based	execution_time	188.246ns	190.891ns ± 2.168ns	190.575ns ± 1.430ns	192.017ns	194.787ns	197.596ns	201.695ns	5.84%	1.424	3.113	1.13%	0.153ns	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	[190.591ns; 191.192ns] or [-0.157%; +0.157%]	None	None	None

Group 14

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	89.895µs	90.157µs ± 0.123µs	90.154µs ± 0.053µs	90.201µs	90.291µs	90.570µs	91.076µs	1.02%	2.757	16.930	0.14%	0.009µs	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
sql/obfuscate_sql_string	execution_time	[90.140µs; 90.174µs] or [-0.019%; +0.019%]	None	None	None

Group 15

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	2.319µs	2.381µs ± 0.019µs	2.382µs ± 0.007µs	2.389µs	2.416µs	2.424µs	2.430µs	2.04%	-0.834	2.752	0.79%	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	[2.378µs; 2.383µs] or [-0.110%; +0.110%]	None	None	None

Group 16

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	3.890µs	3.913µs ± 0.003µs	3.913µs ± 0.002µs	3.915µs	3.918µs	3.919µs	3.921µs	0.20%	-1.603	10.166	0.08%	0.000µs	1	200
credit_card/is_card_number/	throughput	255048453.221op/s	255550471.121op/s ± 213483.776op/s	255546071.851op/s ± 140681.962op/s	255670022.694op/s	255848237.190op/s	255927858.718op/s	257041318.713op/s	0.59%	1.627	10.365	0.08%	15095.583op/s	1	200
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	79.065µs	79.836µs ± 0.444µs	79.793µs ± 0.318µs	80.113µs	80.659µs	80.938µs	81.827µs	2.55%	0.872	1.293	0.55%	0.031µs	1	200
credit_card/is_card_number/ 3782-8224-6310-005	throughput	12220971.459op/s	12526090.747op/s ± 69270.788op/s	12532505.565op/s ± 49994.207op/s	12582188.344op/s	12617028.736op/s	12636278.784op/s	12647763.012op/s	0.92%	-0.830	1.133	0.55%	4898.184op/s	1	200
credit_card/is_card_number/ 378282246310005	execution_time	72.361µs	72.985µs ± 0.360µs	72.936µs ± 0.219µs	73.196µs	73.645µs	73.962µs	74.300µs	1.87%	0.814	0.921	0.49%	0.025µs	1	200
credit_card/is_card_number/ 378282246310005	throughput	13458883.258op/s	13701696.089op/s ± 67246.173op/s	13710568.036op/s ± 41181.831op/s	13749802.939op/s	13797722.621op/s	13816505.129op/s	13819509.001op/s	0.79%	-0.781	0.833	0.49%	4755.022op/s	1	200
credit_card/is_card_number/37828224631	execution_time	3.893µs	3.913µs ± 0.003µs	3.913µs ± 0.002µs	3.915µs	3.918µs	3.919µs	3.921µs	0.20%	-1.342	9.578	0.08%	0.000µs	1	200
credit_card/is_card_number/37828224631	throughput	255055125.735op/s	255574844.499op/s ± 193929.108op/s	255565703.083op/s ± 115282.077op/s	255684625.255op/s	255823173.741op/s	255895408.135op/s	256900868.930op/s	0.52%	1.364	9.744	0.08%	13712.859op/s	1	200
credit_card/is_card_number/378282246310005	execution_time	69.212µs	69.668µs ± 0.304µs	69.587µs ± 0.211µs	69.855µs	70.239µs	70.354µs	70.438µs	1.22%	0.622	-0.638	0.44%	0.021µs	1	200
credit_card/is_card_number/378282246310005	throughput	14196816.581op/s	14354154.181op/s ± 62442.591op/s	14370514.611op/s ± 43620.293op/s	14406453.391op/s	14430804.832op/s	14439098.712op/s	14448336.911op/s	0.54%	-0.609	-0.658	0.43%	4415.358op/s	1	200
credit_card/is_card_number/37828224631000521389798	execution_time	52.160µs	52.236µs ± 0.042µs	52.235µs ± 0.027µs	52.260µs	52.296µs	52.331µs	52.524µs	0.55%	1.769	10.146	0.08%	0.003µs	1	200
credit_card/is_card_number/37828224631000521389798	throughput	19038802.269op/s	19143933.464op/s ± 15466.371op/s	19144114.501op/s ± 9896.718op/s	19154620.319op/s	19166597.604op/s	19171460.386op/s	19171725.539op/s	0.14%	-1.747	9.975	0.08%	1093.638op/s	1	200
credit_card/is_card_number/x371413321323331	execution_time	6.027µs	6.038µs ± 0.010µs	6.035µs ± 0.003µs	6.039µs	6.068µs	6.077µs	6.108µs	1.20%	3.470	14.803	0.17%	0.001µs	1	200
credit_card/is_card_number/x371413321323331	throughput	163726554.718op/s	165626936.720op/s ± 279403.512op/s	165688675.180op/s ± 82830.382op/s	165767960.720op/s	165849793.875op/s	165873579.578op/s	165919744.109op/s	0.14%	-3.446	14.579	0.17%	19756.812op/s	1	200
credit_card/is_card_number_no_luhn/	execution_time	3.894µs	3.913µs ± 0.003µs	3.913µs ± 0.002µs	3.914µs	3.917µs	3.920µs	3.921µs	0.21%	-0.824	7.424	0.07%	0.000µs	1	200
credit_card/is_card_number_no_luhn/	throughput	255047261.575op/s	255590559.719op/s ± 189533.000op/s	255586760.608op/s ± 103312.145op/s	255694344.821op/s	255846246.928op/s	255894559.929op/s	256793628.142op/s	0.47%	0.843	7.538	0.07%	13402.007op/s	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	64.143µs	64.462µs ± 0.144µs	64.450µs ± 0.088µs	64.533µs	64.725µs	64.837µs	64.910µs	0.71%	0.597	0.325	0.22%	0.010µs	1	200
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	15405876.710op/s	15513161.728op/s ± 34659.681op/s	15515798.863op/s ± 21089.553op/s	15536974.264op/s	15561149.645op/s	15577517.072op/s	15590189.094op/s	0.48%	-0.583	0.304	0.22%	2450.810op/s	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	58.103µs	58.412µs ± 0.169µs	58.389µs ± 0.088µs	58.482µs	58.720µs	58.916µs	59.312µs	1.58%	1.408	3.870	0.29%	0.012µs	1	200
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	16860085.502op/s	17119948.377op/s ± 49342.710op/s	17126576.654op/s ± 25987.929op/s	17152031.344op/s	17182503.230op/s	17197597.437op/s	17210739.501op/s	0.49%	-1.375	3.692	0.29%	3489.056op/s	1	200
credit_card/is_card_number_no_luhn/37828224631	execution_time	3.890µs	3.914µs ± 0.003µs	3.914µs ± 0.002µs	3.916µs	3.918µs	3.919µs	3.922µs	0.19%	-2.542	18.106	0.08%	0.000µs	1	200
credit_card/is_card_number_no_luhn/37828224631	throughput	254981589.372op/s	255490414.498op/s ± 198963.524op/s	255470013.121op/s ± 102810.690op/s	255586851.701op/s	255799681.523op/s	255898376.363op/s	257065506.263op/s	0.62%	2.574	18.414	0.08%	14068.846op/s	1	200
credit_card/is_card_number_no_luhn/378282246310005	execution_time	54.575µs	54.873µs ± 0.218µs	54.826µs ± 0.143µs	55.013µs	55.273µs	55.478µs	55.800µs	1.78%	1.025	0.887	0.40%	0.015µs	1	200
credit_card/is_card_number_no_luhn/378282246310005	throughput	17921141.659op/s	18224261.120op/s ± 72217.187op/s	18239509.794op/s ± 47808.496op/s	18281392.423op/s	18306672.247op/s	18316031.902op/s	18323373.103op/s	0.46%	-1.003	0.799	0.40%	5106.526op/s	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	52.141µs	52.217µs ± 0.043µs	52.207µs ± 0.026µs	52.241µs	52.294µs	52.326µs	52.451µs	0.47%	1.224	3.308	0.08%	0.003µs	1	200
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	19065511.879op/s	19150767.715op/s ± 15885.443op/s	19154493.715op/s ± 9412.033op/s	19161823.898op/s	19171954.403op/s	19174731.922op/s	19178908.954op/s	0.13%	-1.215	3.253	0.08%	1123.270op/s	1	200
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	6.027µs	6.039µs ± 0.013µs	6.036µs ± 0.003µs	6.039µs	6.070µs	6.082µs	6.147µs	1.84%	4.566	28.122	0.21%	0.001µs	1	200
credit_card/is_card_number_no_luhn/x371413321323331	throughput	162685502.709op/s	165594217.781op/s ± 349786.092op/s	165671545.912op/s ± 81703.330op/s	165740991.892op/s	165847863.321op/s	165886766.130op/s	165911337.862op/s	0.14%	-4.508	27.391	0.21%	24733.612op/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	[3.913µs; 3.914µs] or [-0.012%; +0.012%]	None	None	None
credit_card/is_card_number/	throughput	[255520884.323op/s; 255580057.919op/s] or [-0.012%; +0.012%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	execution_time	[79.774µs; 79.897µs] or [-0.077%; +0.077%]	None	None	None
credit_card/is_card_number/ 3782-8224-6310-005	throughput	[12516490.482op/s; 12535691.012op/s] or [-0.077%; +0.077%]	None	None	None
credit_card/is_card_number/ 378282246310005	execution_time	[72.936µs; 73.035µs] or [-0.068%; +0.068%]	None	None	None
credit_card/is_card_number/ 378282246310005	throughput	[13692376.416op/s; 13711015.762op/s] or [-0.068%; +0.068%]	None	None	None
credit_card/is_card_number/37828224631	execution_time	[3.912µs; 3.913µs] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number/37828224631	throughput	[255547967.790op/s; 255601721.209op/s] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number/378282246310005	execution_time	[69.625µs; 69.710µs] or [-0.060%; +0.060%]	None	None	None
credit_card/is_card_number/378282246310005	throughput	[14345500.238op/s; 14362808.123op/s] or [-0.060%; +0.060%]	None	None	None
credit_card/is_card_number/37828224631000521389798	execution_time	[52.230µs; 52.242µs] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number/37828224631000521389798	throughput	[19141789.974op/s; 19146076.954op/s] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number/x371413321323331	execution_time	[6.036µs; 6.039µs] or [-0.024%; +0.024%]	None	None	None
credit_card/is_card_number/x371413321323331	throughput	[165588214.080op/s; 165665659.359op/s] or [-0.023%; +0.023%]	None	None	None
credit_card/is_card_number_no_luhn/	execution_time	[3.912µs; 3.913µs] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/	throughput	[255564292.268op/s; 255616827.170op/s] or [-0.010%; +0.010%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	execution_time	[64.442µs; 64.482µs] or [-0.031%; +0.031%]	None	None	None
credit_card/is_card_number_no_luhn/ 3782-8224-6310-005	throughput	[15508358.230op/s; 15517965.227op/s] or [-0.031%; +0.031%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	execution_time	[58.388µs; 58.435µs] or [-0.040%; +0.040%]	None	None	None
credit_card/is_card_number_no_luhn/ 378282246310005	throughput	[17113109.952op/s; 17126786.802op/s] or [-0.040%; +0.040%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	execution_time	[3.914µs; 3.914µs] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631	throughput	[255462840.067op/s; 255517988.929op/s] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	execution_time	[54.843µs; 54.903µs] or [-0.055%; +0.055%]	None	None	None
credit_card/is_card_number_no_luhn/378282246310005	throughput	[18214252.512op/s; 18234269.727op/s] or [-0.055%; +0.055%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	execution_time	[52.211µs; 52.223µs] or [-0.012%; +0.012%]	None	None	None
credit_card/is_card_number_no_luhn/37828224631000521389798	throughput	[19148566.146op/s; 19152969.285op/s] or [-0.011%; +0.011%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	execution_time	[6.037µs; 6.041µs] or [-0.030%; +0.030%]	None	None	None
credit_card/is_card_number_no_luhn/x371413321323331	throughput	[165545740.792op/s; 165642694.769op/s] or [-0.029%; +0.029%]	None	None	None

Group 17

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

scenario	metric	min	mean ± sd	median ± mad	p75	p95	p99	max	peak_to_median_ratio	skewness	kurtosis	cv	sem	runs	sample_size
profile_add_sample_frames_x1000	execution_time	4.151ms	4.157ms ± 0.008ms	4.157ms ± 0.002ms	4.158ms	4.161ms	4.165ms	4.259ms	2.45%	11.741	152.949	0.18%	0.001ms	1	200

scenario	metric	95% CI mean	Shapiro-Wilk pvalue	Ljung-Box pvalue (lag=1)	Dip test pvalue
profile_add_sample_frames_x1000	execution_time	[4.156ms; 4.158ms] or [-0.025%; +0.025%]	None	None	None

Group 18

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	243.272ns	253.520ns ± 13.028ns	246.951ns ± 3.006ns	257.584ns	279.915ns	296.555ns	300.066ns	21.51%	1.743	2.389	5.13%	0.921ns	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	[251.714ns; 255.325ns] or [-0.712%; +0.712%]	None	None	None

Group 19

cpu_model	git_commit_sha	git_commit_date	git_branch
Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	`e90e20c`	1772144967	PROF-13824-ProfileExporter-new-creates-TLS-config-every-time

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	160.583µs	161.199µs ± 0.338µs	161.149µs ± 0.176µs	161.331µs	161.709µs	162.210µs	163.561µs	1.50%	2.154	11.302	0.21%	0.024µs	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	[161.152µs; 161.246µs] or [-0.029%; +0.029%]	None	None	None

Baseline

Omitted due to size.

dd-octo-sts · 2026-02-20T20:47:31Z

Artifact Size Benchmark Report

aarch64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.so	8.51 MB	8.51 MB	+0% (+352 B) 👌
/aarch64-alpine-linux-musl/lib/libdatadog_profiling.a	97.27 MB	97.30 MB	+.03% (+34.12 KB) 🔍

aarch64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.a	112.87 MB	112.92 MB	+.04% (+51.92 KB) 🔍
/aarch64-unknown-linux-gnu/lib/libdatadog_profiling.so	11.12 MB	11.12 MB	+0% (+1.03 KB) 👌

libdatadog-x64-windows

Artifact	Baseline	Commit	Change
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.dll	27.15 MB	27.16 MB	+.03% (+10.50 KB) 🔍
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.lib	76.26 KB	76.26 KB	0% (0 B) 👌
/libdatadog-x64-windows/debug/dynamic/datadog_profiling_ffi.pdb	185.94 MB	185.94 MB	+0% (+8.00 KB) 👌
/libdatadog-x64-windows/debug/static/datadog_profiling_ffi.lib	914.84 MB	916.65 MB	+.19% (+1.80 MB) 🔍
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.dll	9.93 MB	9.93 MB	+.04% (+4.50 KB) 🔍
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.lib	76.26 KB	76.26 KB	0% (0 B) 👌
/libdatadog-x64-windows/release/dynamic/datadog_profiling_ffi.pdb	24.76 MB	24.76 MB	+.03% (+8.00 KB) 🔍
/libdatadog-x64-windows/release/static/datadog_profiling_ffi.lib	51.40 MB	51.43 MB	+.04% (+24.85 KB) 🔍

libdatadog-x86-windows

Artifact	Baseline	Commit	Change
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.dll	22.96 MB	22.97 MB	+.04% (+10.50 KB) 🔍
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.lib	77.44 KB	77.44 KB	0% (0 B) 👌
/libdatadog-x86-windows/debug/dynamic/datadog_profiling_ffi.pdb	190.14 MB	190.17 MB	+.01% (+32.00 KB) 🔍
/libdatadog-x86-windows/debug/static/datadog_profiling_ffi.lib	898.43 MB	900.31 MB	+.20% (+1.87 MB) 🔍
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.dll	7.53 MB	7.53 MB	+.03% (+3.00 KB) 🔍
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.lib	77.44 KB	77.44 KB	0% (0 B) 👌
/libdatadog-x86-windows/release/dynamic/datadog_profiling_ffi.pdb	26.51 MB	26.52 MB	+.05% (+16.00 KB) 🔍
/libdatadog-x86-windows/release/static/datadog_profiling_ffi.lib	47.03 MB	47.06 MB	+.04% (+23.90 KB) 🔍

x86_64-alpine-linux-musl

Artifact	Baseline	Commit	Change
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.a	85.23 MB	85.27 MB	+.04% (+38.69 KB) 🔍
/x86_64-alpine-linux-musl/lib/libdatadog_profiling.so	10.04 MB	10.04 MB	+.04% (+4.34 KB) 🔍

x86_64-unknown-linux-gnu

Artifact	Baseline	Commit	Change
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.a	105.85 MB	105.89 MB	+.04% (+44.58 KB) 🔍
/x86_64-unknown-linux-gnu/lib/libdatadog_profiling.so	11.78 MB	11.79 MB	+.04% (+5.02 KB) 🔍

datadog-datadog-prod-us1-2 · 2026-02-20T20:48:17Z

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

_{This comment will be updated automatically if new data arrives.

🔗 Commit SHA: e90e20c | Docs | Datadog PR Page | Was this helpful? React with 👍/👎 or give us feedback!}

codecov-commenter · 2026-02-20T22:23:28Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.21%. Comparing base (195b024) to head (e90e20c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1619   +/-   ##
=======================================
  Coverage   71.21%   71.21%           
=======================================
  Files         423      424    +1     
  Lines       62464    62493   +29     
=======================================
+ Hits        44481    44504   +23     
- Misses      17983    17989    +6

Components	Coverage Δ
libdd-crashtracker	`63.25% <ø> (ø)`
libdd-crashtracker-ffi	`17.64% <ø> (ø)`
libdd-alloc	`98.77% <ø> (ø)`
libdd-data-pipeline	`87.70% <ø> (ø)`
libdd-data-pipeline-ffi	`73.91% <ø> (ø)`
libdd-common	`79.73% <ø> (ø)`
libdd-common-ffi	`73.40% <ø> (ø)`
libdd-telemetry	`62.48% <ø> (ø)`
libdd-telemetry-ffi	`16.75% <ø> (ø)`
libdd-dogstatsd-client	`82.64% <ø> (ø)`
datadog-ipc	`80.74% <ø> (ø)`
libdd-profiling	`81.59% <100.00%> (+0.03%)`	⬆️
libdd-profiling-ffi	`63.65% <ø> (ø)`
datadog-sidecar	`33.46% <ø> (ø)`
datdog-sidecar-ffi	`12.49% <ø> (ø)`
spawn-worker	`54.69% <ø> (ø)`
libdd-tinybytes	`93.16% <ø> (ø)`
libdd-trace-normalization	`81.71% <ø> (ø)`
libdd-trace-obfuscation	`94.67% <ø> (ø)`
libdd-trace-protobuf	`68.00% <ø> (ø)`
libdd-trace-utils	`89.18% <ø> (ø)`
datadog-tracer-flare	`88.95% <ø> (ø)`
libdd-log	`74.69% <ø> (ø)`

🚀 New features to boost your workflow:

❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

Avoid rebuilding TLS configuration for every export by reusing a process-wide cached config in implicit exporter creation paths. This removes repeated certificate-store initialization overhead on most platforms and fixes the CPU regression during profile uploads.

gyuheon0h

LGTM. Just a thought; for the use case of a ProfileExporter, if the exporter is always hitting the same endpoint(s) with the same proxy settings, it may be worth caching a reqwest::Client (or a small client pool) that’s built using this TLS config? I'm pretty sure for all the usecases of ProfileExporter. we don't change the config stuff, like headers, timeouts, proxies within the process (plz correct me if I am wrong).

gyuheon0h · 2026-02-27T11:07:32Z

/merge

gh-worker-devflow-routing-ef8351 · 2026-02-27T11:07:36Z

View all feedbacks in Devflow UI.

2026-02-27 11:07:36 UTC ℹ️ Start processing command /merge

2026-02-27 11:07:40 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in main is approximately 48m (p90).

2026-02-27 11:48:41 UTC ℹ️ MergeQueue: This merge request was merged

# What does this PR do? Bump version to 28.0.2 This includes: - [chore: update bytes to 1.11.1 to address RUSTSEC-2026-0007](https://github.com/DataDog/libdatadog/pull/1628)[chore: update bytes to 1.11.1 to address RUSTSEC-2026-0007](#1628) - [chore(release): merge release branch to main](https://github.com/DataDog/libdatadog/pull/1629)[chore(release): merge release branch to main](#1629) - [fix: add ecs task metadata to unobfuscated ip addresses](https://github.com/DataDog/libdatadog/pull/1631)[fix: add ecs task metadata to unobfuscated ip addresses](#1631) - [fix: credit card luhn validation for obfuscation](https://github.com/DataDog/libdatadog/pull/1633)[fix: credit card luhn validation for obfuscation](#1633) - [perf(profiling): cache TLS in ProfileExporter::new](https://github.com/DataDog/libdatadog/pull/1619)[perf(profiling): cache TLS in ProfileExporter::new](#1619) # Motivation [perf(profiling): cache TLS in ProfileExporter::new](https://github.com/DataDog/libdatadog/pull/1619)[perf(profiling): cache TLS in ProfileExporter::new](#1619) fixes slow TLS issue # Additional Notes Anything else we should know when reviewing? # How to test the change? Describe here in detail how the change can be validated. Co-authored-by: gyuheon.oh <[email protected]>

r1viollet · 2026-03-25T16:40:28Z

libdd-profiling/src/exporter/profile_exporter.rs

    ) -> anyhow::Result<Self> {
-        let (builder, request_url) = endpoint.to_reqwest_client_builder()?;
-
+        let tls_config = super::tls::cached_tls_config()?;


tls should not be needed for http / uds

The design of the reqwest library is that a client can connect to multiple URLs. It doesn't know if it will use HTTP/HTTPS until later, but the config is done here.. We can possibly-rewrite the necessary components because we should know if we'll be using HTTPS or not, but that's not how the prior nor current code was designed (probably because we inherit such design unintentionally from tokio/reqwest).

morrisonlevi added the profiling Relates to the profiling* modules. label Feb 20, 2026

github-actions bot removed the profiling Relates to the profiling* modules. label Feb 20, 2026

morrisonlevi force-pushed the PROF-13824-ProfileExporter-new-creates-TLS-config-every-time branch from c58ab33 to eb5eef9 Compare February 20, 2026 20:13

morrisonlevi mentioned this pull request Feb 20, 2026

perf(profiling): cache TlsConfig DataDog/dd-trace-php#3666

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ivoanjo mentioned this pull request Feb 23, 2026

[PROF-13732] Upgrade libdatadog dependency to version 28.0.2 DataDog/dd-trace-rb#5274

Merged

gyuheon0h changed the title ~~feat(profiling): TlsConfig for reusable TLS init~~ feat(profiling)!: TlsConfig for reusable TLS init Feb 24, 2026

morrisonlevi force-pushed the PROF-13824-ProfileExporter-new-creates-TLS-config-every-time branch from 31ed060 to e90e20c Compare February 26, 2026 22:29

morrisonlevi changed the title ~~feat(profiling)!: TlsConfig for reusable TLS init~~ perf(profiling): cache TLS in ProfileExporter::new Feb 26, 2026

gyuheon0h approved these changes Feb 27, 2026

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morrisonlevi marked this pull request as ready for review February 27, 2026 08:07

morrisonlevi requested review from a team as code owners February 27, 2026 08:07

gh-worker-dd-devflow-36fce6 bot added mergequeue-status: queued mergequeue-status: in_progress mergequeue-status: rejected and removed mergequeue-status: queued mergequeue-status: in_progress labels Feb 27, 2026

gh-worker-dd-devflow-36fce6 bot added mergequeue-status: queued mergequeue-status: in_progress and removed mergequeue-status: rejected mergequeue-status: queued labels Feb 27, 2026

gh-worker-dd-mergequeue-cf854d bot merged commit 9a61cae into main Feb 27, 2026
141 of 143 checks passed

gh-worker-dd-mergequeue-cf854d bot deleted the PROF-13824-ProfileExporter-new-creates-TLS-config-every-time branch February 27, 2026 11:48

gh-worker-dd-devflow-36fce6 bot added mergequeue-status: done and removed mergequeue-status: in_progress labels Feb 27, 2026

gyuheon0h mentioned this pull request Feb 27, 2026

chore(cargo): bump to 28.0.2 #1636

Merged

r1viollet reviewed Mar 25, 2026

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duncanista mentioned this pull request Mar 27, 2026

fix(crypto): use ring for non-fips builds #1816

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