From 299d24e2d613603d6633f39ebc2f71e73569569e Mon Sep 17 00:00:00 2001
From: Will Wang <willwang@openai.com>
Date: Thu, 15 Jan 2026 11:29:20 -0800
Subject: [PATCH] concurrency of number of cores

---
 .github/workflows/rust-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index 49c2e6c771..c6a70e90c9 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -302,7 +302,7 @@ jobs:
         continue-on-error: true
         run: |
           find . -name Cargo.toml -mindepth 2 -maxdepth 2 -print0 \
-            | xargs -0 -n1 -I{} bash -c 'cd "$(dirname "{}")" && cargo check --profile ${{ matrix.profile }}'
+            | xargs -0 -n1 -P$(nproc) -I{} bash -c 'cd "$(dirname "{}")" && cargo check --profile ${{ matrix.profile }}'
 
       # Save caches explicitly; make non-fatal so cache packaging
       # never fails the overall job. Only save when key wasn't hit.