From 57c111f4195b66c55889dd3e079f11c9e72e442f Mon Sep 17 00:00:00 2001
From: Cameron Dawson <cameron@dawsoncode.com>
Date: Sat, 22 Aug 2026 11:07:15 -0700
Subject: [PATCH] Cap Playwright workers in CI to match the 4-vCPU executor

CircleCI containers report the host's CPU count rather than the cgroup
limit, so Playwright's default (cores / 2) spawned 18 Firefox workers on
a 4-vCPU executor. The oversubscribed container never completed a single
test and the job hung until CircleCI's no-output timeout killed it.
---
 playwright.config.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/playwright.config.js b/playwright.config.js
index 06f7a4ce2ec..7deddce42a3 100644
--- a/playwright.config.js
+++ b/playwright.config.js
@@ -8,6 +8,10 @@ module.exports = defineConfig({
   fullyParallel: true,
   forbidOnly: !!process.env.CI,
   retries: process.env.CI ? 2 : 0,
+  // CI containers report the host's CPU count rather than the executor's
+  // cgroup limit, so Playwright's default (cores / 2) massively oversubscribes
+  // the 4-vCPU CircleCI executor and the run hangs. Pin workers to match it.
+  workers: process.env.CI ? 4 : undefined,
   reporter: process.env.CI
     ? [
         ['list'],