diff --git a/armv7_8.cmake b/armv7_8.cmake
index bc66b8b21..aafbac8cf 100644
--- a/armv7_8.cmake
+++ b/armv7_8.cmake
@@ -1,6 +1,6 @@
 message("========use armv7_8.cmake")
 
-set(CMAKE_C_FLAGS "-mcpu=${CONFIG_ARCH} -O0 -g3 -mfloat-abi=${CONFIG_FLOAT_TYPE}  -mthumb  -DMKRTOS \
+set(CMAKE_C_FLAGS "-mcpu=${CONFIG_ARCH} -Ofast -g3 -mfloat-abi=${CONFIG_FLOAT_TYPE}  -mthumb  -DMKRTOS \
 -std=gnu11 -ffunction-sections -fdata-sections -fno-builtin -u=_printf_float \
 -nostartfiles -nodefaultlibs -nostdlib -nostdinc \
 -fno-stack-protector -Wl,--gc-section -D__ARM_ARCH_7M__ \
diff --git a/mkrtos_knl/CMakeLists.txt b/mkrtos_knl/CMakeLists.txt
index 41ffd7d22..9d622fa56 100755
--- a/mkrtos_knl/CMakeLists.txt
+++ b/mkrtos_knl/CMakeLists.txt
@@ -6,9 +6,9 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} \
 -Wno-unused-function \
 -Wno-unused-variable \
 -Wno-builtin-declaration-mismatch \
--Ofast \
 ")
 
+# -Ofast \
 # message(编译参数：${CMAKE_C_FLAGS})
 
 # cortex-m 系列处理器采用相同的内核arch
diff --git a/mkrtos_knl/arch/cortex-m/at32f437/uart/at32f437_uart.c b/mkrtos_knl/arch/cortex-m/at32f437/uart/at32f437_uart.c
index e8473b2a4..8265d478c 100755
--- a/mkrtos_knl/arch/cortex-m/at32f437/uart/at32f437_uart.c
+++ b/mkrtos_knl/arch/cortex-m/at32f437/uart/at32f437_uart.c
@@ -35,11 +35,15 @@ void uart_tigger(irq_entry_t *irq)
     {
         /* read one byte from the receive data register */
         q_enqueue(&queue, usart_data_receive(PRINT_USARTx));
-
+        usart_interrupt_enable(PRINT_USARTx, USART_IDLE_INT, TRUE);
+    }
+    if (usart_interrupt_flag_get(PRINT_USARTx, USART_IDLEF_FLAG) != RESET)
+    {
         if (irq->irq->wait_thread && thread_get_status(irq->irq->wait_thread) == THREAD_SUSPEND)
         {
             thread_ready_remote(irq->irq->wait_thread, TRUE);
         }
+        usart_interrupt_enable(PRINT_USARTx, USART_IDLE_INT, FALSE);
     }
 }
 
@@ -72,6 +76,8 @@ void uart_init(void)
     usart_receiver_enable(PRINT_USARTx, TRUE);
 
     usart_interrupt_enable(PRINT_USARTx, USART_RDBF_INT, TRUE);
+    usart_interrupt_enable(PRINT_USARTx, USART_IDLE_INT, TRUE);
+    
     usart_enable(PRINT_USARTx, TRUE);
    
     uart_is_init=1;
diff --git a/mkrtos_knl/inc/knl/sleep.h b/mkrtos_knl/inc/knl/sleep.h
index 9bf1f832a..31d5c1317 100644
--- a/mkrtos_knl/inc/knl/sleep.h
+++ b/mkrtos_knl/inc/knl/sleep.h
@@ -6,7 +6,7 @@ typedef struct thread_wait_entry
     slist_head_t node;
     thread_t *th;
     umword_t times;
-    umword_t times_debug;
+    // umword_t times_debug;
 } thread_wait_entry_t;
 void thread_check_timeout(void);
 thread_wait_entry_t *thread_sleep_del(thread_t *th);
diff --git a/mkrtos_knl/knl/sleep.c b/mkrtos_knl/knl/sleep.c
index a2423dc57..3fb8f5b52 100644
--- a/mkrtos_knl/knl/sleep.c
+++ b/mkrtos_knl/knl/sleep.c
@@ -25,7 +25,7 @@ static inline void thread_wait_entry_init(thread_wait_entry_t *entry,
     slist_init(&entry->node);
     entry->th = th;
     entry->times = times;
-    entry->times_debug = 0;
+    // entry->times_debug = 0;
 }
 static void thread_timeout_init(void)
 {
@@ -48,22 +48,27 @@ void thread_check_timeout(void)
         thread_wait_entry_t *next = slist_next_entry(
             pos, (slist_head_t *)wait_list,
             node);
-
-        pos->times_debug++;
+        // pos->times_debug++;
         if (pos->times != 0)
         {
             pos->times--;
+            // pos->times_debug = 0;
             if (pos->times == 0)
             {
                 assert(pos->th->status == THREAD_SUSPEND);
                 slist_del(&pos->node);
                 thread_ready(pos->th, TRUE);
             }
+        } else {
+            // if (pos->times_debug >= 3000) 
+            // {
+            //     printk("thread:0x%x block times %d.\n", pos->th, pos->times_debug);
+            // }
         } // !< 如果是0，则一直休眠
-        if (pos->times_debug%2000 == 0)
-        {
-         //   printk("thread 0x%x block %d sec.\n", pos->th, pos->times_debug /1000);
-        }
+        // if (pos->times_debug%2000 == 0)
+        // {
+        //  //   printk("thread 0x%x block %d sec.\n", pos->th, pos->times_debug /1000);
+        // }
         pos = next;
     }
 }
diff --git a/mkrtos_script/build_at32f437.sh b/mkrtos_script/build_at32f437.sh
index 8a987bb58..10656b19f 100755
--- a/mkrtos_script/build_at32f437.sh
+++ b/mkrtos_script/build_at32f437.sh
@@ -1,15 +1,15 @@
 #!/bin/bash
 
-export TOOLCHAIN=/home/zhangzheng/toolchain/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi/bin/
-export TOOLCHAIN_LIB=/home/zhangzheng/toolchain/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi/lib/gcc/arm-none-eabi/10.3.1/thumb/v7-m/nofp
+# export TOOLCHAIN=/home/zhangzheng/toolchain/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi/bin/
+# export TOOLCHAIN_LIB=/home/zhangzheng/toolchain/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi/lib/gcc/arm-none-eabi/10.3.1/thumb/v7-m/nofp
 
 # linux build
 # export TOOLCHAIN=/home/zhangzheng/gcc-arm-none-eabi-5_4-2016q3/bin/
 # export TOOLCHAIN_LIB=/home/zhangzheng/gcc-arm-none-eabi-5_4-2016q3/lib/gcc/arm-none-eabi/5.4.1/armv7e-m/fpu
 
 # mac compile
-# export TOOLCHAIN=/Users/zhangzheng/gcc-arm-none-eabi-10.3-2021.10/bin/
-# export TOOLCHAIN_LIB=/Users/zhangzheng/gcc-arm-none-eabi-10.3-2021.10/lib/gcc/arm-none-eabi/10.3.1/thumb/v7e-m+fp/softfp
+export TOOLCHAIN=/Users/zhangzheng/gcc-arm-none-eabi-10.3-2021.10/bin/
+export TOOLCHAIN_LIB=/Users/zhangzheng/gcc-arm-none-eabi-10.3-2021.10/lib/gcc/arm-none-eabi/10.3.1/thumb/v7e-m+fp/softfp
 
 # windows compile
 # export TOOLCHAIN=/d/GNUArmEmbeddedToolchain/102021.10/bin/
diff --git a/mkrtos_user/lib/util/src/aligned_alloc.c b/mkrtos_user/lib/util/src/aligned_alloc.c
index 4adca3b4f..00066e768 100644
--- a/mkrtos_user/lib/util/src/aligned_alloc.c
+++ b/mkrtos_user/lib/util/src/aligned_alloc.c
@@ -2,7 +2,7 @@
 #include <stdint.h>
 #include <errno.h>
 #include "malloc_impl.h"
-
+#include "u_malloc.h"
 void *aligned_alloc(size_t align, size_t len)
 {
 	unsigned char *mem, *new;
@@ -19,9 +19,9 @@ void *aligned_alloc(size_t align, size_t len)
 	}
 
 	if (align <= SIZE_ALIGN)
-		return malloc(len);
+		return u_malloc(len);
 
-	if (!(mem = malloc(len + align-1)))
+	if (!(mem = u_malloc(len + align-1)))
 		return 0;
 
 	new = (void *)((uintptr_t)mem + align-1 & -align);
@@ -48,6 +48,6 @@ void *aligned_alloc(size_t align, size_t len)
 	n->psize = c->csize = C_INUSE | (new-mem);
 	n->csize = t->psize -= new-mem;
 
-	__bin_chunk(c);
+	u__bin_chunk(c);
 	return new;
 }
diff --git a/mkrtos_user/lib/util/src/malloc_impl.h b/mkrtos_user/lib/util/src/malloc_impl.h
index f96fabc1f..50797cb27 100644
--- a/mkrtos_user/lib/util/src/malloc_impl.h
+++ b/mkrtos_user/lib/util/src/malloc_impl.h
@@ -34,5 +34,6 @@ struct bin {
 
 #define IS_MMAPPED(c) !((c)->csize & (C_INUSE))
 
+void u__bin_chunk(struct chunk *self);
 
 #endif
diff --git a/mkrtos_user/lib/util/src/u_malloc.c b/mkrtos_user/lib/util/src/u_malloc.c
index 05ebd8c61..1dfdb07b6 100644
--- a/mkrtos_user/lib/util/src/u_malloc.c
+++ b/mkrtos_user/lib/util/src/u_malloc.c
@@ -12,7 +12,6 @@
 // #include "fork_impl.h"
 
 void u_free(void *p);
-static void __bin_chunk(struct chunk *self);
 // #define malloc __libc_malloc_impl
 // #define realloc __libc_realloc
 // #define free __libc_free
@@ -400,7 +399,7 @@ void *u_realloc(void *p, size_t n)
 		struct chunk *split = (void *)((char *)self + n);
 		self->csize = split->psize = n | C_INUSE;
 		split->csize = next->psize = n0-n | C_INUSE;
-		__bin_chunk(split);
+		u__bin_chunk(split);
 		return CHUNK_TO_MEM(self);
 	}
 
@@ -433,7 +432,7 @@ copy_free_ret:
 	return new;
 }
 
-static void __bin_chunk(struct chunk *self)
+void u__bin_chunk(struct chunk *self)
 {
 	struct chunk *next = NEXT_CHUNK(self);
 
@@ -517,7 +516,7 @@ void u_free(void *p)
 	if (IS_MMAPPED(self))
 		unmap_chunk(self);
 	else
-		__bin_chunk(self);
+		u__bin_chunk(self);
 }
 #if 0
 static void __malloc_donate(char *start, char *end)
diff --git a/mkrtos_user/server/init/src/tty.c b/mkrtos_user/server/init/src/tty.c
index 5f95de525..20369c71f 100644
--- a/mkrtos_user/server/init/src/tty.c
+++ b/mkrtos_user/server/init/src/tty.c
@@ -85,8 +85,6 @@ static void console_read_func(void)
             if (!sys_tty.is_nl && L_ICANON(&sys_tty))
             {
                 tty_write_hw(&sys_tty);
-                // 规范模式下没有成一行
-                cons_read_unlock();
             }
             else
             {
diff --git a/mkrtos_user/server/net/src/main.c b/mkrtos_user/server/net/src/main.c
index e327b00a1..c807c25d7 100644
--- a/mkrtos_user/server/net/src/main.c
+++ b/mkrtos_user/server/net/src/main.c
@@ -58,7 +58,7 @@ int main(int args, char *argv[])
         return -1;
     }
 again:
-    ret = ns_query_svr("/eth", &net_drv_hd, 0x1);
+    ret = ns_query_svr("/dev/eth", &net_drv_hd, 0x1);
     if (ret < 0)
     {
         // 0代表根节点
diff --git a/mkrtos_user/user/app/test/main.c b/mkrtos_user/user/app/test/main.c
index 4b6b426c1..5351c73d3 100644
--- a/mkrtos_user/user/app/test/main.c
+++ b/mkrtos_user/user/app/test/main.c
@@ -19,7 +19,7 @@ int main(int argc, char *argv[])
     {
         printf("argv[%d]: %s\n", i, argv[i]);
     }
-    exit(-1);
+    // exit(-1);
     net_test();
     fs_test3();
     fs_test2();
diff --git a/mkrtos_user/user/drv/ATSURFF437/eth/main.c b/mkrtos_user/user/drv/ATSURFF437/eth/main.c
index 1d7a29eb1..a4b3cecae 100644
--- a/mkrtos_user/user/drv/ATSURFF437/eth/main.c
+++ b/mkrtos_user/user/drv/ATSURFF437/eth/main.c
@@ -96,9 +96,7 @@ int main(int argc, char *argv[])
     blk_drv_init(&net_drv);
     ret = rpc_meta_init_def(TASK_THIS, &hd);
     assert(ret >= 0);
-    // fs_svr_init();
-    // mkdir("/dev", 0777);
-    ns_register("/eth", hd, 0);
+    ns_register("/dev/eth", hd, 0);
     meta_reg_svr_obj(&net_drv.svr, BLK_DRV_PROT);
     while (1)
     {