diff --git a/common/src/io_uring.cpp b/common/src/io_uring.cpp
index 1c5fcd3..4cc1b58 100644
--- a/common/src/io_uring.cpp
+++ b/common/src/io_uring.cpp
@@ -37,21 +37,17 @@ struct iobuffer_pool
     struct iobuffer *free_list;
 };
 
-struct config
-{
-    int ring_size;
-    int buff_size;
-    int flags;
-    int sq_thread_idle; // milliseconds
-    int enable_debug;
-};
-
 struct io_uring_instance
 {
+    int cfg_ring_size;
+    int cfg_buff_size;
+    int cfg_flags;
+    int cfg_sq_thread_idle; // milliseconds
+    int cfg_enable_debug;
+
     int sockfd;
     int eventfd;
 
-    struct config config;
     struct io_uring ring;
     struct io_uring_params params;
 
@@ -309,13 +305,13 @@ struct io_uring_instance *io_uring_instance_create(int sockfd, int eventfd, int
 
     instance->sockfd = sockfd;
     instance->eventfd = eventfd;
-    instance->config.ring_size = ring_size;
-    instance->config.buff_size = buff_size;
-    instance->config.flags = flags;
-    instance->config.sq_thread_idle = sq_thread_idle;
-    instance->config.enable_debug = enable_debug;
+    instance->cfg_ring_size = ring_size;
+    instance->cfg_buff_size = buff_size;
+    instance->cfg_flags = flags;
+    instance->cfg_sq_thread_idle = sq_thread_idle;
+    instance->cfg_enable_debug = enable_debug;
 
-    instance->pool = iobuffer_pool_create(instance->config.buff_size, instance->config.ring_size);
+    instance->pool = iobuffer_pool_create(instance->cfg_buff_size, instance->cfg_ring_size);
     if (instance->pool == NULL)
     {
         TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to create io buffer pool, %s", strerror(errno));
@@ -328,14 +324,14 @@ struct io_uring_instance *io_uring_instance_create(int sockfd, int eventfd, int
      * 执行下面命令进行验证 IORING_SETUP_SQPOLL:
      * sudo bpftrace -e 'tracepoint:io_uring:io_uring_submit_sqe {printf("%s(%d)\n", comm, pid);}'
      */
-    if (instance->config.flags)
+    if (instance->cfg_flags)
     {
-        instance->params.flags |= instance->config.flags;
+        instance->params.flags |= instance->cfg_flags;
     }
 
-    if (instance->config.sq_thread_idle)
+    if (instance->cfg_sq_thread_idle)
     {
-        instance->params.sq_thread_idle = instance->config.sq_thread_idle; // milliseconds
+        instance->params.sq_thread_idle = instance->cfg_sq_thread_idle; // milliseconds
     }
 
     ret = io_uring_queue_init_params(ring_size, &instance->ring, &instance->params);
@@ -388,7 +384,7 @@ static int io_uring_read(struct io_uring_instance *instance, struct iobuffer *bu
     io_uring_prep_readv(sqe, instance->sockfd, &buffer->vec, 1, 0);
     io_uring_sqe_set_data(sqe, buffer);
 
-    if (instance->config.enable_debug)
+    if (unlikely(instance->cfg_enable_debug))
     {
         TFE_LOG_DEBUG(g_default_logger, "IO_URING: submit read entry: sockfd: %02d sqe: %p user_data: %p iov_base: %p iovec_len: %04ld",
                       instance->sockfd, sqe, (void *)sqe->user_data, buffer->vec.iov_base, buffer->vec.iov_len);
@@ -409,9 +405,9 @@ int io_uring_write(struct io_uring_instance *instance, const char *data, int len
         return -1;
     }
 
-    if (len > instance->config.buff_size)
+    if (len > instance->cfg_buff_size)
     {
-        TFE_LOG_ERROR(g_default_logger, "IO_URING: the length of the sent data [%d] is greater than the capacity of the io_uring buffer [%d]", len, instance->config.buff_size);
+        TFE_LOG_ERROR(g_default_logger, "IO_URING: the length of the sent data [%d] is greater than the capacity of the io_uring buffer [%d]", len, instance->cfg_buff_size);
         return -1;
     }
 
@@ -428,7 +424,7 @@ int io_uring_write(struct io_uring_instance *instance, const char *data, int len
     io_uring_prep_writev(sqe, instance->sockfd, &buffer->vec, 1, 0);
     io_uring_sqe_set_data(sqe, buffer);
 
-    if (instance->config.enable_debug)
+    if (unlikely(instance->cfg_enable_debug))
     {
         TFE_LOG_DEBUG(g_default_logger, "IO_URING: submit write entry: sockfd: %02d sqe: %p user_data: %p iov_base: %p iovec_len: %04ld",
                       instance->sockfd, sqe, (void *)sqe->user_data, buffer->vec.iov_base, buffer->vec.iov_len);
@@ -480,7 +476,7 @@ int io_uring_polling(struct io_uring_instance *instance)
     struct io_uring *ring = &instance->ring;
     struct iobuffer_pool *pool = instance->pool;
     io_uring_read_cb *read_cb = instance->read_cb;
-    int enable_debug = instance->config.enable_debug;
+    int enable_debug = instance->cfg_enable_debug;
 
     while (1)
     {
@@ -501,7 +497,7 @@ int io_uring_polling(struct io_uring_instance *instance)
             }
 
             buffer = (struct iobuffer *)cqe->user_data;
-            if (enable_debug)
+            if (unlikely(enable_debug))
             {
                 TFE_LOG_DEBUG(g_default_logger, "IO_URING: handle %s entry: sockfd: %02d cqe: %p user_data: %p iov_base: %p iovec_len: %04ld cqe->res: %04d",
                               ioevent_tostring(buffer->event), instance->sockfd, cqe, (void *)buffer, buffer->vec.iov_base, buffer->vec.iov_len, cqe->res);