From ddd6b3aa3574ecc9d1ebb7dd92e726a53ba3bb3b Mon Sep 17 00:00:00 2001
From: boriselec <boriselec@users.noreply.github.com>
Date: Thu, 22 Oct 2026 17:53:18 +0300
Subject: [PATCH] fix: correct Linux sysfs path for physical core detection
 (#2186)

---
 src/core/util.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/util.cpp b/src/core/util.cpp
index 7bd5c0bd..a691b423 100644
--- a/src/core/util.cpp
+++ b/src/core/util.cpp
@@ -343,7 +343,7 @@ int32_t sd_get_num_physical_cores() {
     // enumerate the set of thread siblings, num entries is num cores
     std::unordered_set<std::string> siblings;
     for (uint32_t cpu = 0; cpu < UINT32_MAX; ++cpu) {
-        std::ifstream thread_siblings("/sys/devices/system/cpu" + std::to_string(cpu) + "/topology/thread_siblings");
+        std::ifstream thread_siblings("/sys/devices/system/cpu/cpu" + std::to_string(cpu) + "/topology/thread_siblings");
         if (!thread_siblings.is_open()) {
             break;  // no more cpus
         }