diff --git a/contrib/tiflash-proxy b/contrib/tiflash-proxy
index 70da4ccad80..601d803562c 160000
--- a/contrib/tiflash-proxy
+++ b/contrib/tiflash-proxy
@@ -1 +1 @@
-Subproject commit 70da4ccad80bab4fe9235bd4e1fe203226347a2a
+Subproject commit 601d803562cde9a7fe8d17120d073aea55ae1012
diff --git a/dbms/src/Server/Server.cpp b/dbms/src/Server/Server.cpp
index 0bb0c682bf2..31bbd5483ea 100644
--- a/dbms/src/Server/Server.cpp
+++ b/dbms/src/Server/Server.cpp
@@ -1023,25 +1023,15 @@ int Server::main(const std::vector<std::string> & /*args*/)
     });
 
     /// get CPU/memory/disk info of this server
-    if (tiflash_instance_wrap.proxy_helper)
-    {
-        diagnosticspb::ServerInfoRequest request;
-        request.set_tp(static_cast<diagnosticspb::ServerInfoType>(1));
-        diagnosticspb::ServerInfoResponse response;
-        std::string req = request.SerializeAsString();
-        auto * helper = tiflash_instance_wrap.proxy_helper;
-        helper->fn_server_info(helper->proxy_ptr, strIntoView(&req), &response);
-        server_info.parseSysInfo(response);
-        setNumberOfLogicalCPUCores(server_info.cpu_info.logical_cores);
-        computeAndSetNumberOfPhysicalCPUCores(server_info.cpu_info.logical_cores, server_info.cpu_info.physical_cores);
-        LOG_INFO(log, "ServerInfo: {}", server_info.debugString());
-    }
-    else
-    {
-        setNumberOfLogicalCPUCores(std::thread::hardware_concurrency());
-        computeAndSetNumberOfPhysicalCPUCores(std::thread::hardware_concurrency(), std::thread::hardware_concurrency() / 2);
-        LOG_INFO(log, "TiFlashRaftProxyHelper is null, failed to get server info");
-    }
+    diagnosticspb::ServerInfoRequest request;
+    diagnosticspb::ServerInfoResponse response;
+    request.set_tp(static_cast<diagnosticspb::ServerInfoType>(1));
+    std::string req = request.SerializeAsString();
+    ffi_get_server_info_from_proxy(reinterpret_cast<intptr_t>(&helper), strIntoView(&req), &response);
+    server_info.parseSysInfo(response);
+    setNumberOfLogicalCPUCores(server_info.cpu_info.logical_cores);
+    computeAndSetNumberOfPhysicalCPUCores(server_info.cpu_info.logical_cores, server_info.cpu_info.physical_cores);
+    LOG_INFO(log, "ServerInfo: {}", server_info.debugString());
 
     grpc_log = Logger::get("grpc");
     gpr_set_log_verbosity(GPR_LOG_SEVERITY_DEBUG);