GH: reduce all green job initial delay from 15 to 3 minutes

[p-datadog]

What does this PR do?

Optimizes the CI status check workflow by reducing the initial delay from 15 minutes to 3 minutes while maintaining the total wait time of 1.5 hours.

Motivation:

The current 15-minute initial delay in the all-green workflow was causing unnecessarily long wait times in retry scenarios. When a job fails and is retried, the all-green job is also retried. During the retry, since we're not running the full test suite, the checks complete much faster. However, the workflow still waited 15 minutes before checking status, adding unnecessary delay to the CI pipeline.

This change:

• Reduces initial-delay-seconds from 900s (15 min) to 180s (3 min)
• Increases max-retries from 60 to 87 to maintain the same total wait time (1.5 hours)
• Adds documentation explaining the rationale for the 3-minute delay

Change log entry

None

[y9v]

thank you for this! It was quite annoying to wait on retries

[ivoanjo]

👍 THANK YOU

[datadog-datadog-prod-us1-2]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 95.11% (+0.00%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 690e0b3 | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-02-19 17:09:13

Comparing candidate commit 690e0b3 in PR branch green-delay with baseline commit 08b2133 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 44 metrics, 2 unstable metrics.