diff --git a/deps/oblib/src/lib/thread/thread.cpp b/deps/oblib/src/lib/thread/thread.cpp
index aca425447..253bfd63a 100644
--- a/deps/oblib/src/lib/thread/thread.cpp
+++ b/deps/oblib/src/lib/thread/thread.cpp
@@ -403,10 +403,10 @@ int Thread::get_cpu_time_inc(int64_t &cpu_time_inc)
     char *field_ptr = strtok_r(stat_content, " ", &save_ptr);
     while (field_ptr != NULL) {
       if (field_index == USER_TIME_FIELD_INDEX) {
-        cpu_time += std::stoul(field_ptr) * 1000000 / sysconf(_SC_CLK_TCK);
+        cpu_time += strtoul(field_ptr, NULL, 10) * 1000000 / sysconf(_SC_CLK_TCK);
       }
       if (field_index == SYSTEM_TIME_FIELD_INDEX) {
-        cpu_time += std::stoul(field_ptr) * 1000000 / sysconf(_SC_CLK_TCK);
+        cpu_time += strtoul(field_ptr, NULL, 10) * 1000000 / sysconf(_SC_CLK_TCK);
         break;
       }
       field_ptr = strtok_r(NULL, " ", &save_ptr);
diff --git a/src/share/resource_manager/ob_cgroup_ctrl.cpp b/src/share/resource_manager/ob_cgroup_ctrl.cpp
index 5ec7c1a50..3ca3efa00 100644
--- a/src/share/resource_manager/ob_cgroup_ctrl.cpp
+++ b/src/share/resource_manager/ob_cgroup_ctrl.cpp
@@ -678,7 +678,7 @@ int ObCgroupCtrl::get_cpu_usage(const uint64_t tenant_id, int32_t &cpu_usage)
         K(ret), K(usage_path), K(usage_value), K(tenant_id));
   } else {
     usage_value[VALUE_BUFSIZE] = '\0';
-    cur_usage = std::stoull(usage_value);
+    cur_usage = strtoull(usage_value, NULL, 10);
   }
 
   cpu_usage = 0;
@@ -706,7 +706,7 @@ int ObCgroupCtrl::get_cpu_time(const uint64_t tenant_id, int64_t &cpu_time)
           K(ret), K(usage_path), K(usage_value), K(tenant_id));
     } else {
       usage_value[VALUE_BUFSIZE] = '\0';
-      cpu_time = std::stoull(usage_value) / 1000;
+      cpu_time = strtoull(usage_value, NULL, 10) / 1000;
     }
   }
   return ret;