From 99fd90f59786a61a56deea6a96f1ab0f3075b12b Mon Sep 17 00:00:00 2001
From: Bret Comnes <bret@comnes.org>
Date: Fri, 9 Oct 2026 13:22:22 -0700
Subject: [PATCH 1/2] Limit concurrent CI matrix jobs

Reduce runner contention by limiting the largest test matrices.
Keep all test cases while allowing fewer jobs to run at once.

Assisted-by: Codex:GPT-6
---
 .github/workflows/ci.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3b1abffd8..e47f56a31 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -657,6 +657,7 @@ jobs:
       contents: read
     strategy:
       fail-fast: false
+      max-parallel: 2
       matrix:
         ecosystem: [npm, pypi, gem, cargo, golang, maven, composer, nuget, deno, sbt]
     steps:
@@ -960,6 +961,7 @@ jobs:
     needs: [e2e-build]
     strategy:
       fail-fast: false
+      max-parallel: 4
       matrix:
         include:
           # (No e2e_cargo / e2e_golang rows: neither suite has an
@@ -1758,6 +1760,7 @@ jobs:
     needs: [e2e-build-windows]
     strategy:
       fail-fast: false
+      max-parallel: 2
       matrix:
         include:
           - os: windows-latest
@@ -1795,6 +1798,7 @@ jobs:
     needs: [e2e-build-macos]
     strategy:
       fail-fast: false
+      max-parallel: 2
       matrix:
         include:
           - os: macos-latest
@@ -1853,6 +1857,7 @@ jobs:
     needs: [e2e-build]
     strategy:
       fail-fast: false
+      max-parallel: 2
       matrix:
         include:
           - {os: ubuntu-latest, suite: e2e_redirect_gem_build e2e_vendor_gem_build, ruby: '3.3', bundler: '2.7.2'}

From 7d6ed07db8c8e60a5c47969be421bc79d5e8f882 Mon Sep 17 00:00:00 2001
From: Bret Comnes <bret@comnes.org>
Date: Fri, 9 Oct 2026 13:23:28 -0700
Subject: [PATCH 2/2] Balance CI matrix concurrency limits

Allow eight Linux E2E jobs and four coverage or full E2E jobs.
Keep Windows and macOS E2E concurrency at two jobs.

Assisted-by: Codex:GPT-6
---
 .github/workflows/ci.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e47f56a31..1a86c6285 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -657,7 +657,7 @@ jobs:
       contents: read
     strategy:
       fail-fast: false
-      max-parallel: 2
+      max-parallel: 4
       matrix:
         ecosystem: [npm, pypi, gem, cargo, golang, maven, composer, nuget, deno, sbt]
     steps:
@@ -961,7 +961,7 @@ jobs:
     needs: [e2e-build]
     strategy:
       fail-fast: false
-      max-parallel: 4
+      max-parallel: 8
       matrix:
         include:
           # (No e2e_cargo / e2e_golang rows: neither suite has an
@@ -1857,7 +1857,7 @@ jobs:
     needs: [e2e-build]
     strategy:
       fail-fast: false
-      max-parallel: 2
+      max-parallel: 4
       matrix:
         include:
           - {os: ubuntu-latest, suite: e2e_redirect_gem_build e2e_vendor_gem_build, ruby: '3.3', bundler: '2.7.2'}