diff --git a/mkrtos_knl/CMakeLists.txt b/mkrtos_knl/CMakeLists.txt
index 83a4eedd3..381081210 100755
--- a/mkrtos_knl/CMakeLists.txt
+++ b/mkrtos_knl/CMakeLists.txt
@@ -35,10 +35,10 @@ target_link_libraries(
     PUBLIC
     --whole-archive
     knl
-    --no-whole-archive
     arch
-    drv
     lib
+    drv
+    --no-whole-archive
 )
 add_dependencies(mkrtos.elf arch)
 add_dependencies(mkrtos.elf drv)
@@ -76,4 +76,10 @@ add_custom_target(
     ${CMAKE_SIZE} mkrtos.elf
 )
 add_dependencies(mkrtos.elf link_file_dump)
-add_dependencies(mkrtos_dump mkrtos.elf)
\ No newline at end of file
+add_dependencies(mkrtos_dump mkrtos.elf)
+add_dependencies(mkrtos_dump knl)
+add_dependencies(mkrtos_dump arch)
+add_dependencies(mkrtos_dump lib)
+add_dependencies(mkrtos_dump drv) 
+
+
diff --git a/mkrtos_knl/inc/knl/init.h b/mkrtos_knl/inc/knl/init.h
index 4fc0f0bc2..acfdacc70 100755
--- a/mkrtos_knl/inc/knl/init.h
+++ b/mkrtos_knl/inc/knl/init.h
@@ -4,17 +4,17 @@ typedef void (*init_func)(void);
 
 void sys_call_init(void);
 
-#define INIT_LOW_HARD(f) USED __attribute__((__section__(".init_array." \
+#define INIT_LOW_HARD(f) static USED __attribute__((__section__(".init_array." \
                                                     "102"))) init_func init_##f = f
-#define INIT_HIGH_HAD(f) USED __attribute__((__section__(".init_array." \
+#define INIT_HIGH_HAD(f) static USED __attribute__((__section__(".init_array." \
                                                     "103"))) init_func init_##f = f
-#define INIT_MEM(f) USED __attribute__((__section__(".init_array." \
+#define INIT_MEM(f) static USED __attribute__((__section__(".init_array." \
                                                "104"))) init_func init_##f = f
-#define INIT_KOBJ_MEM(f) USED __attribute__((__section__(".init_array." \
+#define INIT_KOBJ_MEM(f) static USED __attribute__((__section__(".init_array." \
                                                     "105"))) init_func init_##f = f
-#define INIT_KOBJ(f) USED __attribute__((__section__(".init_array." \
+#define INIT_KOBJ(f) static USED __attribute__((__section__(".init_array." \
                                                 "106"))) init_func init_##f = f
-#define INIT_STAGE1(f) USED __attribute__((__section__(".init_array." \
+#define INIT_STAGE1(f) static USED __attribute__((__section__(".init_array." \
                                                   "107"))) init_func init_##f = f
-#define INIT_STAGE2(f) USED __attribute__((__section__(".init_array." \
+#define INIT_STAGE2(f) static USED __attribute__((__section__(".init_array." \
                                                   "108"))) init_func init_##f = f
diff --git a/mkrtos_knl/knl/globals.c b/mkrtos_knl/knl/globals.c
index d8641eb22..054e40635 100755
--- a/mkrtos_knl/knl/globals.c
+++ b/mkrtos_knl/knl/globals.c
@@ -18,7 +18,7 @@
 #include "mm_man.h"
 #include "ipc.h"
 static mem_t global_mem;                     //!< 全局内存管理块
-static uint8_t mem_block[55 * 1024];        //!< 内核内存分配堆 TODO:自动识别大小，或者从bootstrap中读取
+static uint8_t mem_block[59 * 1024];        //!< 内核内存分配堆 TODO:自动识别大小，或者从bootstrap中读取
 static kobject_t *kobj_ls[FACTORY_FUNC_MAX]; //!< 全局静态内核对象
 
 void global_reg_kobj(kobject_t *kobj, int inx)
diff --git a/mkrtos_knl/knl/thread.c b/mkrtos_knl/knl/thread.c
index 833087870..d00bb28ce 100755
--- a/mkrtos_knl/knl/thread.c
+++ b/mkrtos_knl/knl/thread.c
@@ -73,6 +73,7 @@ static void thread_timeout_init(void)
     slist_init(&wait_send_queue);
     slist_init(&wait_recv_queue);
 }
+
 INIT_KOBJ(thread_timeout_init);
 
 /**
@@ -433,6 +434,7 @@ static int thread_ipc_recv(msg_tag_t *ret_msg, ipc_timeout_t timeout, umword_t *
     assert(ret_user_id);
     thread_t *cur_th = thread_get_current();
     umword_t lock_status;
+    thread_wait_entry_t wait;
 
     lock_status = cpulock_lock();
     cur_th->ipc_status = THREAD_RECV; //!< 因为接收挂起
@@ -454,7 +456,6 @@ static int thread_ipc_recv(msg_tag_t *ret_msg, ipc_timeout_t timeout, umword_t *
         //!< 加入等待队列
         if (timeout.recv_timeout)
         {
-            thread_wait_entry_t wait;
 
             thread_wait_entry_init(&wait, cur_th, timeout.recv_timeout);
             slist_add_append(&wait_recv_queue, &wait.node); //!< 放到等待队列中
@@ -855,7 +856,7 @@ static kobject_t *thread_create_func(ram_limit_t *lim, umword_t arg0, umword_t a
  * @brief 工厂注册函数
  *
  */
-void thread_factory_register(void)
+static void thread_factory_register(void)
 {
     factory_register(thread_create_func, THREAD_PROT);
 }
diff --git a/mkrtos_user/lib/letter-shell/demo/mkrtos/shell_port.c b/mkrtos_user/lib/letter-shell/demo/mkrtos/shell_port.c
index 5cdc2f480..8595539ea 100644
--- a/mkrtos_user/lib/letter-shell/demo/mkrtos/shell_port.c
+++ b/mkrtos_user/lib/letter-shell/demo/mkrtos/shell_port.c
@@ -38,10 +38,8 @@ signed short userShellWrite(char *data, unsigned short len)
  */
 signed short userShellRead(char *data, unsigned short len)
 {
-    int ret = 0;
-    while (ret <= 0)
+    while (cons_read((uint8_t *)data, len) <= 0)
     {
-        ret = cons_read((uint8_t *)data, len);
         u_sleep_ms(5);
     }
 }
diff --git a/mkrtos_user/server/init/src/heap_stack.c b/mkrtos_user/server/init/src/heap_stack.c
index fd3b7e393..3317ceb9b 100644
--- a/mkrtos_user/server/init/src/heap_stack.c
+++ b/mkrtos_user/server/init/src/heap_stack.c
@@ -8,7 +8,7 @@
  * @copyright Copyright (c) 2023
  * 
  */
-#define HEAP_SIZE 8192
+#define HEAP_SIZE 512
 #define STACK_SIZE 1024 * 2
 
 #if defined(__CC_ARM)
diff --git a/mkrtos_user/server/shell/src/heap_stack.c b/mkrtos_user/server/shell/src/heap_stack.c
index 989b92b9f..fcf8574aa 100644
--- a/mkrtos_user/server/shell/src/heap_stack.c
+++ b/mkrtos_user/server/shell/src/heap_stack.c
@@ -1,5 +1,5 @@
 
-#define HEAP_SIZE 1024
+#define HEAP_SIZE 512
 #define STACK_SIZE 2048
 
 #if defined(__CC_ARM)
diff --git a/setting.cmake b/setting.cmake
index 4cd0726e6..9784c5a54 100755
--- a/setting.cmake
+++ b/setting.cmake
@@ -21,20 +21,20 @@ set(CMAKE_SIZE "${CROSS_COMPILE}size" CACHE PATH "" FORCE)
 set(MKRTOS_ARCH $ENV{ARCH})
 
 # -mfloat-abi=soft  -u _printf_float 
-set(CMAKE_C_FLAGS "-mcpu=${MKRTOS_ARCH} -mthumb -O0 -g3 -lc -lrdimon -msoft-float -u _printf_float -D=MKRTOS \
+set(CMAKE_C_FLAGS "-mcpu=${MKRTOS_ARCH} -mthumb -Os -g3 -lc -lrdimon -msoft-float -u _printf_float -D=MKRTOS \
 -std=gnu11 -ffunction-sections -fdata-sections -fno-builtin -mfix-cortex-m3-ldrd \
 -nostartfiles -nodefaultlibs -nostdlib -nostdinc -Xlinker  \
  -fno-stack-protector -Wl,--gc-sections \
 " CACHE STRING "" FORCE)
 
 set(CMAKE_CXX_FLAGS "-mcpu=${MKRTOS_ARCH}-mthumb -mno-thumb-interwork -D=MKRTOS \
--mfix-cortex-m3-ldrd -O0 -g -std=c++11 \
+-mfix-cortex-m3-ldrd -Os -g3 -std=c++11 \
 -fmessage-length=0 -Xlinker --print-map -Wall -W -fno-stack-protector -g \ 
 -mfloat-abi=soft -lc -lrdimon -u _printf_float \
 -ffunction-sections -fdata-sections -fno-builtin -nostartfiles -nodefaultlibs -nostdlib -nostdinc -Xlinker \
 " CACHE STRING "" FORCE)
 
-set(CMAKE_ASM_FLAGS "-mcpu=${MKRTOS_ARCH} -mthumb -O0 -g -mfloat-abi=soft -lc -lrdimon -D=MKRTOS \
+set(CMAKE_ASM_FLAGS "-mcpu=${MKRTOS_ARCH} -mthumb -Os -g3 -mfloat-abi=soft -lc -lrdimon -D=MKRTOS \
 -u _printf_float -std=gnu11 -ffunction-sections -fdata-sections -fno-builtin \
 -nostartfiles -nodefaultlibs -nostdlib -nostdinc -Xlinker  -fno-stack-protector \
 " CACHE STRING "" FORCE)