diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..15a5c580
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.h linguist-language=C
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 07d112e5..7e106e6e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@ endif()
 # set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address" CACHE STRING "my configurable string" FORCE)
 # set(CMAKE_EXE_LINKER_FLAGS_DEBUG  "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer  -fsanitize=address" CACHE STRING "my configurable string" FORCE)
 
-set(ENABLE_ASAN ON CACHE BOOL "enable address sanitizer" FORCE)
+set(ENABLE_ASAN OFF CACHE BOOL "enable address sanitizer" FORCE)
 
 option(INCLUDE_TCP_LISTENER "link TcpListener staticly to the core"  TRUE)
 option(INCLUDE_LOGGER_TUNNEL "link LoggerTunnel staticly to the core"  TRUE)
diff --git a/in_use b/in_use
deleted file mode 100644
index e69de29b..00000000
diff --git a/ww/buffer_pool.c b/ww/buffer_pool.c
index f473d0d9..19b834f0 100644
--- a/ww/buffer_pool.c
+++ b/ww/buffer_pool.c
@@ -15,13 +15,13 @@
 
 #define MEMORY_PROFILE HIG2_MEMORY // todo (cmake)
 
-#define BASE_READ_BUFSIZE        (1U << 18) // 8K
-#define BUFFERPOOL_CONTAINER_LEN ((16 * 4) + (16 * (1 * MEMORY_PROFILE)))
+#define BASE_READ_BUFSIZE        (1U << 13) // 8K
+#define BUFFERPOOL_CONTAINER_LEN ((16 * 4) + (16 * (16 * MEMORY_PROFILE)))
 #define BUFFER_SIZE              (BASE_READ_BUFSIZE * (MEMORY_PROFILE > 0 ? MEMORY_PROFILE : 1))
 
 static void firstCharge(buffer_pool_t *pool)
 {
-    for (size_t i = 0; i < pool->cap / 2; i++)
+    for (size_t i = 0; i < (pool->cap / 2); i++)
     {
         pool->available[i] = newShiftBuffer(pool->buffers_size);
     }
@@ -60,7 +60,7 @@ static void giveMemBackToOs(buffer_pool_t *pool)
 
 shift_buffer_t *popBuffer(buffer_pool_t *pool)
 {
-    return newShiftBuffer(BUFFER_SIZE);
+    // return newShiftBuffer(BUFFER_SIZE);
     if (pool->len <= 0)
     {
         reCharge(pool);
@@ -76,8 +76,8 @@ shift_buffer_t *popBuffer(buffer_pool_t *pool)
 
 void reuseBuffer(buffer_pool_t *pool, shift_buffer_t *b)
 {
-    destroyShiftBuffer(b);
-    return;
+    // destroyShiftBuffer(b);
+    // return;
     if (*(b->refc) > 1)
     {
         destroyShiftBuffer(b);
diff --git a/ww/eventloop/.gitattributes b/ww/eventloop/.gitattributes
deleted file mode 100644
index 25128799..00000000
--- a/ww/eventloop/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-cpputil/json.hpp linguist-vendored
diff --git a/ww/frand.h b/ww/frand.h
index e5abf454..a44e6d6c 100644
--- a/ww/frand.h
+++ b/ww/frand.h
@@ -1,6 +1,6 @@
 #pragma once
 #include "ww.h"
-#include "utils/mathutils.h" // users probably want to use min/max
+#include "utils/mathutils.h"
 
 // seed initialized by ww (generally time())
 // Compute a pseudorandom integer.