[bric3]

What Does This Do

Require explicit locales and charsets for checked JDK APIs and update existing tracer calls. Document intentional JVM defaults and the @SuppressForbidden escape hatch, with regression coverage for the guardrail and Turkish-locale configuration parsing.

Motivation

The tracer inherits the application's JVM defaults. Identifier case conversion, protocol data and machine-readable formatting need stable results across deployment locales and charsets.

Additional Notes

• Keep the signatures focused on locales and charsets; the bundled jdk-unsafe rules also cover default time zones.
• Local validation excludes Maven instrumentation because org.sonatype.sisu:sisu-guice:3.1.0:no_aop cannot be resolved. The full aggregate also encounters unrelated OpenLiberty and Mule build failures. Enabled forbidden-apis checks are validated separately.

Contributor Checklist

• Format the title according to the contribution guidelines
• Assign the type: and (comp: or inst:) labels in addition to any other useful labels
• Avoid using close, fix, or any linking keywords when referencing an issue
  Use solves instead, and assign the PR milestone to the issue
• Update the CODEOWNERS file on source file addition, migration, or deletion
• Update public documentation with any new configuration flags or behaviors
• Once approved, use merge queue to merge the PR

[pr-commenter]

Debugger benchmarks

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
ci_job_date	1792772853	1792773179
end_time	2026-10-23T16:29:01	2026-10-23T16:34:27
git_branch	master	bdu/explicit-locale-charset
git_commit_sha	ffd86f3	0b20b7b
start_time	2026-10-23T16:27:34	2026-10-23T16:33:00

See matching parameters

	Baseline	Candidate
ci_job_id	2171343665	2171343665
ci_pipeline_id	147132393	147132393
cpu_model	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz
git_commit_date	1792772071	1792772071

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 9 metrics, 6 unstable metrics.

See unchanged results

scenario	Δ mean agg_http_req_duration_min	Δ mean agg_http_req_duration_p50	Δ mean agg_http_req_duration_p75	Δ mean agg_http_req_duration_p99	Δ mean throughput
scenario:noprobe	unstable [-27108.344ns; +28723.890ns] or [-8.542%; +9.051%]	unstable [-37.354µs; +41.184µs] or [-10.700%; +11.797%]	unstable [-47.874µs; +52.237µs] or [-13.171%; +14.372%]	unstable [-104.585µs; +119.884µs] or [-8.665%; +9.933%]	same
scenario:basic	same	same	same	unstable [-173.245µs; +66.684µs] or [-14.381%; +5.536%]	unstable [-83.263op/s; +188.971op/s] or [-3.664%; +8.315%]
scenario:loop	same	same	same	same	same

Request duration reports for reports

gantt
    title reports - request duration [CI 0.99] : candidate=None, baseline=None
    dateFormat X
    axisFormat %s
section baseline
noprobe (349.114 µs) : 314, 384
.   : milestone, 349,
basic (327.057 µs) : 322, 333
.   : milestone, 327,
loop (8.093 ms) : 8030, 8157
.   : milestone, 8093,
section candidate
noprobe (351.028 µs) : 311, 391
.   : milestone, 351,
basic (327.202 µs) : 322, 333
.   : milestone, 327,
loop (8.089 ms) : 8026, 8152
.   : milestone, 8089,

Loading

• baseline results

Scenario	Request median duration [CI 0.99]
noprobe	349.114 µs [314.447 µs, 383.78 µs]
basic	327.057 µs [321.54 µs, 332.573 µs]
loop	8.093 ms [8.03 ms, 8.157 ms]

• candidate results

Scenario	Request median duration [CI 0.99]
noprobe	351.028 µs [311.251 µs, 390.806 µs]
basic	327.202 µs [321.869 µs, 332.534 µs]
loop	8.089 ms [8.026 ms, 8.152 ms]

[dd-octo-sts]

🟢 Java Benchmark SLOs — All performance SLOs passed

Suite	Status
Startup	🟢 pass

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	13.97 s	14.00 s	[-0.8%; +0.5%] (no difference)
startup:insecure-bank:tracing:Agent	12.97 s	13.02 s	[-1.1%; +0.4%] (no difference)
startup:petclinic:appsec:Agent	17.20 s	17.08 s	[-0.2%; +1.6%] (no difference)
startup:petclinic:iast:Agent	16.88 s	17.07 s	[-2.1%; -0.2%] (maybe better)
startup:petclinic:profiling:Agent	16.78 s	16.71 s	[-0.8%; +1.7%] (no difference)
startup:petclinic:sca:Agent	16.57 s	17.03 s	[-7.2%; +1.8%] (no difference)
startup:petclinic:tracing:Agent	16.16 s	16.14 s	[-0.8%; +1.1%] (no difference)

Commit: 0b20b7b1 · CI Pipeline · Benchmarking Platform UI

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Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.