From 56acdcc1921ebfe88936204ac6121e772e8aac74 Mon Sep 17 00:00:00 2001
From: Michael Heller <21163552+mdheller@users.noreply.github.com>
Date: Thu, 23 Jul 2026 10:18:13 -0400
Subject: [PATCH] =?UTF-8?q?windows:=20-j2=20+=2024G=20swap=20=E2=80=94=20C?=
 =?UTF-8?q?++=20dom/canvas=20TU=20cluster=20swap-deathed=20at=20-j3?=
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-j3+14G got PAST the Rust wall (10min -> 28min, deep into C++), then stalled
13min on dom/canvas and got SIGTERM'd: swap-death on the heavy WebGL/bindings
C++ TUs. Halve concurrent heavy compiles (-j2) and give swap real headroom
(24G; runner has 100G+ free disk). Slower but should clear the C++ memory peaks.
---
 .github/workflows/nightly-windows.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/nightly-windows.yml b/.github/workflows/nightly-windows.yml
index 6c13c91..e4ea1a6 100644
--- a/.github/workflows/nightly-windows.yml
+++ b/.github/workflows/nightly-windows.yml
@@ -31,7 +31,7 @@ jobs:
       RELEASE: 1
       PROFILE: human-secure
       # 16GB runners OOM the neqo/mls/icu rustc cluster at higher parallelism.
-      MOZ_BUILD_JOBS: 3
+      MOZ_BUILD_JOBS: 2
 
     steps:
       - name: Checkout
@@ -47,7 +47,7 @@ jobs:
         run: |
           sudo swapoff -a || true
           sudo rm -f /mnt/swapfile /swapfile || true
-          sudo fallocate -l 14G /mnt/swapfile
+          sudo fallocate -l 24G /mnt/swapfile
           sudo chmod 600 /mnt/swapfile
           sudo mkswap /mnt/swapfile
           sudo swapon /mnt/swapfile