chore: document high macos parallelism

dannykopping · dannykopping · commit 983515fac0a2 · 2025-12-11T11:57:57.000+02:00
Signed-off-by: Danny Kopping &lt;danny@coder.com&gt;
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
@@ -467,6 +467,8 @@ jobs:
         with:
           postgres-version: "13"
           # Our macOS runners have 8 cores.
+          # Even though this parallelism seems high, we've observed relatively low flakiness in the past.
+          # See https://github.com/coder/coder/pull/21091#discussion_r2609891540.
           test-parallelism-packages: "8"
           test-parallelism-tests: "16"
           # By default, run tests with cache for improved speed (possibly at the expense of correctness).
