diff --git a/common/include/ipc/ipc_def.h b/common/include/ipc/ipc_def.h
index e35af6f2..b4dff8d4 100644
--- a/common/include/ipc/ipc_def.h
+++ b/common/include/ipc/ipc_def.h
@@ -19,7 +19,7 @@
 namespace OHOS {
 namespace DistributedHardware {
 #define DEVICE_MANAGER_SERVICE_NAME "dev_mgr_svc"
-#define MAX_DM_IPC_LEN 4096
+#define MAX_DM_IPC_LEN 2048
 
 #define DECLARE_IPC_MODEL(className)        \
 public:                                     \
diff --git a/devicemanager.gni b/devicemanager.gni
index fee9560c..e6160d6b 100644
--- a/devicemanager.gni
+++ b/devicemanager.gni
@@ -22,3 +22,5 @@ services_path = "${devicemanager_path}/services"
 innerkits_path = "${devicemanager_path}/interfaces/inner_kits"
 
 build_flags = [ "-Werror" ]
+
+dm_ldflags = [ "-lpthread" ]
diff --git a/services/devicemanagerservice/BUILD.gn b/services/devicemanagerservice/BUILD.gn
index 1d208748..8414cba6 100644
--- a/services/devicemanagerservice/BUILD.gn
+++ b/services/devicemanagerservice/BUILD.gn
@@ -91,6 +91,8 @@ if (defined(ohos_lite)) {
 
     cflags_cc = build_flags
 
+    ldflags = dm_ldflags
+
     deps = [
       "${innerkits_path}/native_cpp:devicemanagersdk",
       "${utils_path}:devicemanagerutils",
diff --git a/services/devicemanagerservice/src/ipc/lite/ipc_server_main.cpp b/services/devicemanagerservice/src/ipc/lite/ipc_server_main.cpp
index c31c4a7a..565cfe63 100644
--- a/services/devicemanagerservice/src/ipc/lite/ipc_server_main.cpp
+++ b/services/devicemanagerservice/src/ipc/lite/ipc_server_main.cpp
@@ -26,7 +26,7 @@ using namespace OHOS::DistributedHardware;
 
 static void InitAll()
 {
-    const int32_t DM_SERVICE_INIT_DELAY = 5;
+    const int32_t DM_SERVICE_INIT_DELAY = 2;
 
     sleep(DM_SERVICE_INIT_DELAY);
     if (IpcServerStubInit() != DEVICEMANAGER_OK) {
diff --git a/services/devicemanagerservice/src/ipc/lite/ipc_server_stub.cpp b/services/devicemanagerservice/src/ipc/lite/ipc_server_stub.cpp
index 77a5b5ef..45816427 100644
--- a/services/devicemanagerservice/src/ipc/lite/ipc_server_stub.cpp
+++ b/services/devicemanagerservice/src/ipc/lite/ipc_server_stub.cpp
@@ -33,8 +33,8 @@
 
 namespace {
     const int32_t WAIT_FOR_SERVER = 2;
-    const int32_t STACK_SIZE = 0x800;
-    const int32_t QUEUE_SIZE = 20;
+    const int32_t STACK_SIZE = 0x1000;
+    const int32_t QUEUE_SIZE = 32;
 }
 
 using namespace OHOS::DistributedHardware;