v5.120.0 proposal

[dd-octo-sts]

Features

• General: Expose plugin name and options types #9637
• LLM Observability: Add submit feedback method for submitting end-user feedback #9654
• pg: Trace pool connection-acquire wait time #8914
• Test Optimization: Add zero-config test impact analysis #9604
• Test Optimization: Improve validation runbook reliability #9584
• Test Optimization: Report managed tests in CI logs #9605
• Test Optimization: Support WebdriverIO Jasmine reporting #9607

Fixes

• dns: Preserve shorthand rrtype with options #9624
• express: Preserve legacy middleware dispatch semantics #9351
• loader: Install the import-in-the-middle matcher under --loader #9549
• mysql: Preserve query callback arguments #9630
• next: Preserve http endpoint for parent spans #9682
• next: Trace compiled route runtimes #9627
• Test Optimization: Align EFD retries with duration policies #9382
• Test Optimization: Allow null skippable coverage metadata #9677
• Test Optimization: Avoid requesting page fixture in cleanup hook #9681
• Test Optimization: Disable telemetry in test workers #9687
• Test Optimization: Explain when TIA skips all tests #9671
• Test Optimization: Handle bounded validation edge cases #9658
• Test Optimization: Ignore line coverage for Vitest TIA #9672
• Test Optimization: Preserve Jest parameters across retries #9693
• Test Optimization: Preserve managed report details #9653
• Test Optimization: Reject symlinked coverage reports #9335
• Test Optimization: Support Jest 24 retry registration #9699
• Test Optimization: Support older Jest and Mocha versions #9695

Performance

• loader: Defer rewriter initialization #9502

Documentation

• LLM Observability: Correct both agent skills against the codebase #9545

Internal (CI, Testing, Benchmarking)

• AppSec: Slim down appsec index file #9670
• coverage: Group equivalent V8 profiles before conversion #9655
• Dependencies: Bump @types/node #9615
• Dependencies: Bump openai #9664
• Dependencies: Bump pnpm #9666
• Dependencies: Bump pprof-format from 2.2.3 to 2.3.0 in /vendor in the vendor-minor-and-patch-dependencies group across 1 directory #9690
• Dependencies: Bump undici #9663
• eslint: Enable JSDoc parameter and type checks #9566
• eslint: Enable rules that are clean or trivially fixable #9553
• eslint: Update Unicorn and enable iteration fallback style #9673
• General: Reset the propagation-hash config on close #9562
• General: Support Node 24 iteration metrics #9662
• lint: Simplify regexes and enable the actionlint shellcheck pass #9618
• LLM Observability: Add preserve OpenTelemetry span receiver test #9309
• Test Optimization: Respect v5 Cypress support range #9697
• Test Optimization: Split Vitest TIA tests #9652
• Test Optimization: Stabilize flaky integration tests #9650

[dd-octo-sts]

Overall package size

Self size: 7.86 MB
Deduped: 8.52 MB
No deduping: 8.52 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | import-in-the-middle | 3.3.3 | 125.43 kB | 441.68 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | dc-polyfill | 0.1.11 | 25.74 kB | 25.74 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[datadog-prod-us1-3]

🎉 All green!

🧪 All tests passed
❄️ No new flaky tests detected

🎯 Code Coverage (details)
• Patch Coverage: 95.88%
• Overall Coverage: 98.47%

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 8f0d2f1 | Docs | Datadog PR Page | Give us feedback!}

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-08-05 15:09:43

Comparing candidate commit 8f0d2f1 in PR branch v5.120.0-proposal with baseline commit 261f2ce in branch v5.x.

📊 Benchmarking dashboard

Found 0 performance improvements and 0 performance regressions! Performance is the same for 2325 metrics, 33 unstable metrics.

Explanation

This is an A/B test comparing a candidate commit's performance against that of a baseline commit. Performance changes are noted in the tables below as:

• 🟩 = significantly better candidate vs. baseline
• 🟥 = significantly worse candidate vs. baseline

We compute a confidence interval (CI) over the relative difference of means between metrics from the candidate and baseline commits, considering the baseline as the reference.

If the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD), the change is considered significant.

Feel free to reach out to #apm-benchmarking-platform on Slack if you have any questions.

More details about the CI and significant changes

You can imagine this CI as a range of values that is likely to contain the true difference of means between the candidate and baseline commits.

CIs of the difference of means are often centered around 0%, because often changes are not that big:

---------------------------------(------|---^--------)-------------------------------->
                              -0.6%    0%  0.3%     +1.2%
                                 |          |        |
         lower bound of the CI --'          |        |
sample mean (center of the CI) -------------'        |
         upper bound of the CI ----------------------'

As described above, a change is considered significant if the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD).

For instance, for an execution time metric, this confidence interval indicates a significantly worse performance:

----------------------------------------|---------|---(---------^---------)---------->
                                       0%        1%  1.3%      2.2%      3.1%
                                                  |   |         |         |
       significant impact threshold --------------'   |         |         |
                      lower bound of CI --------------'         |         |
       sample mean (center of the CI) --------------------------'         |
                      upper bound of CI ----------------------------------'

Unstable benchmarks

These benchmarks have a confidence interval too wide to call a change; treat them as noise rather than signal.

scenario:appsec-appsec-enabled-20

• unstable execution_time [-231.405ms; +226.338ms] or [-6.148%; +6.013%]

scenario:appsec-appsec-enabled-24

• unstable execution_time [-200.468ms; +217.042ms] or [-7.507%; +8.128%]

scenario:appsec-appsec-enabled-26

• unstable execution_time [-227.739ms; +241.215ms] or [-8.922%; +9.450%]

scenario:appsec-appsec-enabled-with-attacks-26

• unstable execution_time [-178.234ms; +194.910ms] or [-6.122%; +6.695%]

scenario:appsec-control-20

• unstable cpu_user_time [-59.000ms; +77.395ms] or [-4.369%; +5.731%]
• unstable execution_time [-181.773ms; +201.442ms] or [-10.069%; +11.158%]

scenario:appsec-control-24

• unstable execution_time [-110.276ms; +113.152ms] or [-8.855%; +9.086%]

scenario:appsec-control-26

• unstable execution_time [-119.327ms; +134.888ms] or [-9.706%; +10.971%]

scenario:debugger-line-probe-with-snapshot-default-24

• unstable cpu_user_time [-1186.230ms; +842.216ms] or [-13.844%; +9.829%]
• unstable execution_time [-1226.191ms; +893.252ms] or [-13.215%; +9.627%]
• unstable instructions [-10.2G instructions; +7.1G instructions] or [-14.515%; +10.091%]
• unstable throughput [-306.569op/s; +280.771op/s] or [-8.674%; +7.944%]

scenario:debugger-line-probe-with-snapshot-minimal-26

• unstable cpu_user_time [-1810.572ms; +628.937ms] or [-19.298%; +6.703%]
• unstable execution_time [-1815.259ms; +643.151ms] or [-17.955%; +6.362%]
• unstable instructions [-16.3G instructions; +5.5G instructions] or [-20.890%; +6.975%]
• unstable throughput [-147.641op/s; +390.216op/s] or [-4.546%; +12.016%]

scenario:debugger-line-probe-without-snapshot-24

• unstable cpu_user_time [-2.433s; +0.302s] or [-27.796%; +3.452%]
• unstable execution_time [-2.447s; +0.294s] or [-25.842%; +3.104%]
• unstable instructions [-20.7G instructions; +2.8G instructions] or [-28.820%; +3.857%]
• unstable throughput [-79.099op/s; +688.417op/s] or [-2.248%; +19.563%]

scenario:debugger-line-probe-without-snapshot-26

• unstable cpu_user_time [-3631.806ms; +3645.226ms] or [-35.264%; +35.394%]
• unstable execution_time [-3642.824ms; +3655.104ms] or [-33.023%; +33.135%]
• unstable instructions [-32398.9M instructions; +32346.7M instructions] or [-37.536%; +37.475%]
• unstable max_rss_usage [-10776.383KB; +11898.783KB] or [-6.620%; +7.309%]
• unstable throughput [-718.523op/s; +716.181op/s] or [-23.333%; +23.257%]

scenario:dogstatsd-with-tags-20

• unstable cpu_user_time [-540.733ms; +54.466ms] or [-11.046%; +1.113%]
• unstable execution_time [-537.426ms; +54.233ms] or [-10.794%; +1.089%]
• unstable throughput [-20326.368op/s; +182249.760op/s] or [-1.206%; +10.815%]

scenario:plugin-claude-agent-sdk-compact-stream-scan-26

• unstable cpu_usage_percentage [-7.363%; +3.678%]

scenario:plugin-pino-json-log-injection-26

• unstable execution_time [-108.569ms; +213.620ms] or [-3.625%; +7.132%]

scenario:sampling-rule-miss-24

• unstable cpu_user_time [-54.233ms; +86.177ms] or [-4.208%; +6.687%]
• unstable execution_time [-55.616ms; +84.289ms] or [-4.292%; +6.504%]

scenario:test-optimization-large-suite-20

• unstable max_rss_usage [-3.462MB; +6.938MB] or [-4.362%; +8.742%]

[codecov]

Codecov Report

❌ Patch coverage is 92.75862% with 42 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.68%. Comparing base (6b35e7d) to head (8f0d2f1).
⚠️ Report is 1986 commits behind head on v5.x.

Files with missing lines	Patch %	Lines
packages/datadog-instrumentations/src/cucumber.js	66.12%	42 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             v5.x    #9617       +/-   ##
===========================================
+ Coverage   83.19%   89.68%    +6.49%     
===========================================
  Files         476      885      +409     
  Lines       20153   126598   +106445     
  Branches        0    10137    +10137     
===========================================
+ Hits        16766   113542    +96776     
- Misses       3387    13056     +9669     

Flag	Coverage Δ
aiguard	56.85% <90.00%> (?)
aiguard-integration	55.66% <85.34%> (?)
apm-bucket-0	58.04% <94.62%> (?)
apm-bucket-1	63.20% <90.35%> (?)
apm-bucket-2	61.99% <91.94%> (?)
apm-bucket-3	59.54% <88.55%> (?)
apm-integrations-aerospike	56.15% <90.00%> (?)
apm-integrations-confluentinc-kafka-javascript	60.83% <88.55%> (?)
apm-integrations-couchbase	56.57% <91.10%> (?)
apm-integrations-http	61.99% <88.25%> (?)
apm-integrations-kafkajs	61.42% <88.55%> (?)
apm-integrations-next	59.14% <86.86%> (?)
apm-integrations-prisma	58.16% <88.98%> (?)
appsec	71.92% <90.00%> (?)
appsec-express_fastify_graphql	69.36% <94.40%> (?)
appsec-integration	50.20% <70.86%> (?)
appsec-kafka_ldapjs_lodash	63.22% <90.00%> (?)
appsec-mongodb-core_mongoose_mysql	66.87% <91.69%> (?)
appsec-next	56.57% <90.47%> (?)
appsec-node-serialize_passport_postgres	66.51% <91.49%> (?)
instrumentations-bucket-0	51.45% <74.72%> (?)
instrumentations-bucket-10	61.39% <91.49%> (?)
instrumentations-bucket-11	51.36% <90.00%> (?)
instrumentations-bucket-2	53.27% <91.49%> (?)
instrumentations-bucket-6	60.12% <88.42%> (?)
instrumentations-bucket-7	57.91% <90.41%> (?)
instrumentations-bucket-9	60.94% <91.49%> (?)
instrumentations-instrumentation-couchbase	50.72% <90.00%> (?)
instrumentations-integration-esbuild	33.97% <67.15%> (?)
llmobs-ai_anthropic_bedrock	62.69% <94.15%> (?)
llmobs-bucket-1	61.19% <94.20%> (?)
llmobs-openai	61.66% <91.90%> (?)
llmobs-openai-agents_vertex-ai	59.65% <91.52%> (?)
llmobs-sdk	66.34% <90.00%> (?)
openfeature	55.43% <84.95%> (?)
openfeature-unit	53.02% <90.00%> (?)
platform-core_esbuild_instrumentations-misc	40.54% <72.41%> (?)
platform-integration	60.33% <85.66%> (?)
platform-shimmer_unit-guardrails_webpack	38.61% <68.69%> (?)
plugins-bucket-18	61.24% <93.18%> (?)
plugins-bucket-20	61.45% <91.52%> (?)
plugins-bullmq_cassandra_cookie	61.10% <91.52%> (?)
plugins-fetch_fs_generic-pool	58.10% <87.54%> (?)
plugins-jest_knex_langgraph	55.20% <93.33%> (?)
plugins-lodash_mariadb_memcached	57.52% <88.98%> (?)
plugins-moleculer_mongodb_mongodb-core	61.21% <89.25%> (?)
plugins-mongoose_multer_mysql	58.52% <89.25%> (?)
plugins-mysql2_nats_node-serialize	60.05% <88.55%> (?)
plugins-opensearch_passport-http_pino	58.95% <88.55%> (?)
plugins-postgres_process_pug	58.11% <88.98%> (?)
plugins-redis_router_sequelize	61.30% <87.54%> (?)
plugins-valkey_vm_winston	57.43% <88.98%> (?)
plugins-ws	58.98% <90.00%> (?)
profiling	61.34% <91.49%> (?)
serverless-aws-sdk-aws-sdk	54.75% <90.00%> (?)
serverless-aws-sdk-base-inject-field	50.66% <90.00%> (?)
serverless-aws-sdk-bedrockruntime	54.39% <90.00%> (?)
serverless-aws-sdk-dynamodb	55.25% <90.00%> (?)
serverless-aws-sdk-lambda	56.92% <90.00%> (?)
serverless-aws-sdk-sns	59.59% <90.00%> (?)
serverless-aws-sdk-sqs	60.02% <88.55%> (?)
serverless-aws-sdk-stepfunctions	55.17% <90.00%> (?)
serverless-aws-sdk-util	51.20% <90.00%> (?)
serverless-bucket-0	53.80% <94.06%> (?)
test-optimization-cypress	64.89% <85.31%> (?)
test-optimization-jest	72.73% <88.25%> (?)
test-optimization-mocha	72.47% <88.25%> (?)
test-optimization-playwright-playwright-atr	59.95% <89.83%> (?)
test-optimization-playwright-playwright-final-status	60.31% <89.83%> (?)
test-optimization-playwright-playwright-impacted-tests	59.83% <89.83%> (?)
test-optimization-playwright-playwright-reporting	61.13% <89.83%> (?)
test-optimization-playwright-playwright-test-span	60.03% <89.83%> (?)
test-optimization-selenium	59.38% <75.67%> (?)
test-optimization-testopt	57.87% <81.94%> (?)
test-optimization-webdriverio	64.78% <94.06%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 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.

[datadog-prod-us1-3]

The new PM2 environment helper converts null-valued fields from pm2_env into literal strings. A normal PM2 configuration with an unset DD_SERVICE or DD_TRACE_SAMPLE_RATE therefore changes unset settings into the values "null", which can alter service naming and make sampling configuration invalid.

_{📊 Validated against 11 scenarios · Open Bits AI session}

_{🤖 Datadog Autotest · Commit 8f0d2f1 · What is Autotest? · @DataDog review to ask questions · Any feedback? Reach out in #autotest}