ci(profiling): helper container resource limits

[morrisonlevi]

Description

Alternative PR to #3672 so that CI will run. Also added documentation into the file directly. Thanks Daniel!

The shared runner pool defaults leave helper container limits unset, causing pods to be Burstable QoS even when the build container has matching requests and limits. This adds explicit helper container resource limits (requests == limits) so the pod achieves Guaranteed QoS class, ensuring proper CPU cgroup enforcement.

This fixes the issue where nproc reports the node's full CPU count (e.g. 66) instead of the requested 3 CPUs.

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

[datadog-datadog-prod-us1-2]

⚠️ Tests

✨ Fix all issues with BitsAI or with Cursor

⚠️ Warnings

🧪 1028 Tests failed

testSearchPhpBinaries from integration.DDTrace\Tests\Integration\PHPInstallerTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integration\PHPInstallerTest::testSearchPhpBinaries
Test code or tested code printed unexpected output: Searching for available php binaries, this operation might take a while.

testSimplePushAndProcess from laravel-58-test.DDTrace\Tests\Integrations\Laravel\V5_8\QueueTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integrations\Laravel\V5_8\QueueTest::testSimplePushAndProcess
Test code or tested code printed unexpected output: spanLinksTraceId: 699e1bab00000000423ffcde9a8af6af
tid: 699e1bab00000000
hexProcessTraceId: 423ffcde9a8af6af
hexProcessSpanId: 23dc62bf69538b90
processTraceId: 4773812163041752751
processSpanId: 2584048860449180560

phpvfscomposer://tests/vendor/phpunit/phpunit/phpunit:106

testSimplePushAndProcess from laravel-8x-test.DDTrace\Tests\Integrations\Laravel\V8_x\QueueTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integrations\Laravel\V8_x\QueueTest::testSimplePushAndProcess
Test code or tested code printed unexpected output: spanLinksTraceId: 699e1be6000000003be182036b44fa35
tid: 699e1be600000000
hexProcessTraceId: 3be182036b44fa35
hexProcessSpanId: b71f3c68fedbca8f
processTraceId: 4314872869193841205
processSpanId: 13195331854868925071

phpvfscomposer://tests/vendor/phpunit/phpunit/phpunit:106

View all

ℹ️ Info

❄️ No new flaky tests detected

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[ivoanjo]

👍 Reviewed in-person with Levi, LGTM