From a023edfa5bc1982ba5c6365ea2e36c6dfc48a9ef Mon Sep 17 00:00:00 2001
From: Galigator <Galigator@users.noreply.github.com>
Date: Mon, 20 Apr 2026 15:19:57 +0200
Subject: [PATCH] [bugfix] Use only onlines CPUs in lscpu (#40161)

Signed-off-by: kse <kevin.sejourne@cloud-temple.com>
Co-authored-by: kse <kevin.sejourne@cloud-temple.com>
---
 vllm/utils/cpu_resource_utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vllm/utils/cpu_resource_utils.py b/vllm/utils/cpu_resource_utils.py
index bf3d84fb68d..4a56e7f6433 100644
--- a/vllm/utils/cpu_resource_utils.py
+++ b/vllm/utils/cpu_resource_utils.py
@@ -155,7 +155,7 @@ def _get_cpu_list() -> list[LogicalCPUInfo]:
         return [LogicalCPUInfo(i, i, 0) for i in range(cpu_count)]
 
     lscpu_output = subprocess.check_output(
-        "lscpu -J -e=CPU,CORE,NODE", shell=True, text=True
+        "lscpu --json --extended=CPU,CORE,NODE --online", shell=True, text=True
     )
 
     # For platform without NUMA, replace '-' to '0'