Switch to a 6-core profile for mac (#6323)

* Switch to a 6-core profile for mac

* Bump workers percentage to optimize for CPU count (#6329)

* Bump macOS workers percentage to optimize for CPU count

* Handle floor math

---------

Co-authored-by: Jace Browning <jacebrowning@gmail.com>

.github/workflows/e2e-tests.yml

@@ -285,7 +285,7 @@ jobs:
         # TODO: enable namespace-profile-windows-latest once available
         os:
           - "runs-on=${{ github.run_id }}/family=i7ie.2xlarge/image=ubuntu22-full-x64"
-          - namespace-profile-macos-8-cores
+          - namespace-profile-macos-6-cores
           - windows-latest-8-cores
         shardIndex: [1, 2, 3, 4]
         shardTotal: [4]
@@ -295,7 +295,7 @@ jobs:
         isScheduled:
           - ${{ github.event_name == 'schedule' }}
         exclude:
-          - os: namespace-profile-macos-8-cores
+          - os: namespace-profile-macos-6-cores
             isScheduled: true
           - os: windows-latest-8-cores
             isScheduled: true

playwright.electron.config.ts

@@ -20,7 +20,7 @@ if (process.env.E2E_WORKERS) {
     case 'darwin':
     case 'win32':
     default:
-      workers = '25%' // Lower concurrency for heavier Electron processes
+      workers = '40%' // Lower concurrency for heavier Electron processes
       break
   }
 }