chore(antithesis): Update endpoint submission

[blt]

Summary

This commit updates the way we submit Antithesis runs to conform to
current guidelines from Antithesis. Note that antithesis.source is
specific to the Datadog Agent project and should not be used for
other projects.

Change Type

• Bug fix
• New feature
• Non-functional (chore, refactoring, docs)
• Performance

How did you test this PR?

References

[blt]

• chore(antithesis): Intake v3 #2167
• chore(antithesis): DiffEq, count total contexts emitted #2157
• chore(antithesis): Update endpoint submission #2147 👈 (View in Graphite)
• main

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[pr-commenter]

Binary Size Analysis (Agent Data Plane)

Baseline: 9a2d58f · Comparison: 0f927d3 · diff
Analysis Configuration: stripped binaries · Pass/Fail Threshold: +5%
Sizes: 39.41 MiB (baseline) vs 39.41 MiB (comparison)
Size Change: -8 B (-0.00%)

✅ Binary size difference within threshold

Changes by Module

Module	File Size	Symbols
anon.44a0faa3240fa409baa379409d152aec.1.llvm.10875051420697084105	-130 B	1
anon.44a0faa3240fa409baa379409d152aec.1.llvm.8895064105245619572	+129 B	1
anon.44a0faa3240fa409baa379409d152aec.4.llvm.10875051420697084105	-114 B	1
anon.44a0faa3240fa409baa379409d152aec.4.llvm.8895064105245619572	+113 B	1
anon.44a0faa3240fa409baa379409d152aec.3.llvm.10875051420697084105	-109 B	1
anon.44a0faa3240fa409baa379409d152aec.3.llvm.8895064105245619572	+108 B	1
anon.44a0faa3240fa409baa379409d152aec.0.llvm.10875051420697084105	-97 B	1
anon.44a0faa3240fa409baa379409d152aec.0.llvm.8895064105245619572	+96 B	1
anon.44a0faa3240fa409baa379409d152aec.2.llvm.10875051420697084105	-95 B	1
anon.44a0faa3240fa409baa379409d152aec.2.llvm.8895064105245619572	+94 B	1
[Unmapped]	-3 B	1

Detailed Symbol Changes

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [NEW]    +129  [NEW]     +40    anon.44a0faa3240fa409baa379409d152aec.1.llvm.8895064105245619572
  [NEW]    +113  [NEW]     +24    anon.44a0faa3240fa409baa379409d152aec.4.llvm.8895064105245619572
  [NEW]    +108  [NEW]     +19    anon.44a0faa3240fa409baa379409d152aec.3.llvm.8895064105245619572
  [NEW]     +96  [NEW]      +7    anon.44a0faa3240fa409baa379409d152aec.0.llvm.8895064105245619572
  [NEW]     +94  [NEW]      +5    anon.44a0faa3240fa409baa379409d152aec.2.llvm.8895064105245619572
 -15.0%      -3  [ = ]       0    [Unmapped]
  [DEL]     -95  [DEL]      -5    anon.44a0faa3240fa409baa379409d152aec.2.llvm.10875051420697084105
  [DEL]     -97  [DEL]      -7    anon.44a0faa3240fa409baa379409d152aec.0.llvm.10875051420697084105
  [DEL]    -109  [DEL]     -19    anon.44a0faa3240fa409baa379409d152aec.3.llvm.10875051420697084105
  [DEL]    -114  [DEL]     -24    anon.44a0faa3240fa409baa379409d152aec.4.llvm.10875051420697084105
  [DEL]    -130  [DEL]     -40    anon.44a0faa3240fa409baa379409d152aec.1.llvm.10875051420697084105
  -0.0%      -8  [ = ]       0    TOTAL

[datadog-datadog-prod-us1-2]

🔄 Datadog auto-retried 1 job - 1 passed on retry

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 0f927d3 | Docs | Datadog PR Page | Give us feedback!}

[pr-commenter]

Regression Detector (Agent Data Plane)

Run ID: bdc999ac-8c33-4ee8-bce0-9aa444c80774
Baseline: 9a2d58fe · Comparison: 0f927d31 · diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment (5)

Experiments configured erratic: true are tagged (ignored) and skipped when determining which experiments regressed or improved. Experiments which are detected as erratic at runtime are tagged (erratic) to flag that the run's sample dispersion was high, but their regression / improvement signal still counts.

experiment	goal	Δ mean %	links
quality_gates_rss_idle	memory	⚪ +0.05	metrics profiles logs
quality_gates_rss_dsd_ultraheavy	memory	⚪ -0.08	metrics profiles logs
quality_gates_rss_dsd_medium	memory	⚪ -0.11	metrics profiles logs
quality_gates_rss_dsd_low	memory	⚪ -0.27	metrics profiles logs
quality_gates_rss_dsd_heavy	memory	⚪ -0.70	metrics profiles logs

Bounds Checks: ❌ Failed (5)

experiment	check	replicates	observed	links
quality_gates_rss_dsd_heavy	memory_usage	9/10	❌ 140 MiB ≤ 140 MiB	metrics profiles logs
quality_gates_rss_dsd_low	memory_usage	10/10	✅ 44.1 MiB ≤ 50 MiB	metrics profiles logs
quality_gates_rss_dsd_medium	memory_usage	10/10	✅ 67.1 MiB ≤ 75 MiB	metrics profiles logs
quality_gates_rss_dsd_ultraheavy	memory_usage	10/10	✅ 193 MiB ≤ 200 MiB	metrics profiles logs
quality_gates_rss_idle	memory_usage	10/10	✅ 30.3 MiB ≤ 40 MiB	metrics profiles logs

Explanation

A change is flagged as a regression when |Δ mean %| > 5.00% in the regressing direction for its optimization goal AND SMP marks the experiment as a regression (is_regression: true). Improvements use the matching criteria for the improving direction. Experiments configured erratic: true (tagged (ignored)) are skipped outright; experiments detected as erratic at runtime (tagged (erratic)) still count, since that flag describes sample dispersion rather than directional certainty. The Δ mean % cell is colored accordingly: 🟢 = improvement, 🔴 = regression, ⚪ = neutral. Reduction in CPU or memory is an improvement; reduction in ingress throughput is a regression.

[datadog-datadog-prod-us1-2]

More details

DRY_RUN execution of both general and differential scenarios confirmed all changes are correct: the webhook switches to run_test, source is fixed to datadog_agent, and the two new fault toggles (FORCE_DISABLE_ALL_FAULTS, SIMULTANEOUS_FAULTS) are properly scoped — the former always included at its false default, the latter only appended when FAULT_NODES is non-empty. All env-var overrides work as documented.

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_{📊 Validated against 6 scenarios · Open Bits AI session}

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[blt]

Merge activity

• Jul 17, 10:58 PM UTC: @blt merged this pull request with Graphite.