diff --git a/c_src/ePort/ePort.cpp b/c_src/ePort/ePort.cpp
index 4773380..5a0c850 100644
--- a/c_src/ePort/ePort.cpp
+++ b/c_src/ePort/ePort.cpp
@@ -12,18 +12,16 @@
 # include <stdio.h>
 #include <stdlib.h>
 
-#define BUFF_LEN 256
+#define BUFF_LEN 128
 std::map<u_int64_t, int> reqCache;
 bool gIsBigEndian;
 char gCmdBuff[BUFF_LEN] = {};
 int gIndex = 0;
 u_int64_t gReqId = 0;
 
-
-
 void LOG(const char* ms, ... ) {
-    char wzLog[1024] = {0};
-    char buffer[1024] = {0};
+    char wzLog[100] = {0};
+    char buffer[128] = {0};
     va_list args;
     va_start(args, ms);
     vsprintf(wzLog, ms, args);
@@ -33,12 +31,7 @@ void LOG(const char* ms, ... ) {
     time(&now);
     struct tm *local;
     local = localtime(&now);
-    printf("%04d-%02d-%02d %02d:%02d:%02d %s\n", local->tm_year + 1900, local->tm_mon,
-           local->tm_mday, local->tm_hour, local->tm_min, local->tm_sec,
-           wzLog);
-    sprintf(buffer, "%04d-%02d-%02d %02d:%02d:%02d %s\n", local->tm_year + 1900, local->tm_mon,
-            local->tm_mday, local->tm_hour, local->tm_min, local->tm_sec,
-            wzLog);
+    sprintf(buffer, "%04d-%02d-%02d %02d:%02d:%02d %s\n", local->tm_year + 1900, local->tm_mon,local->tm_mday, local->tm_hour, local->tm_min, local->tm_sec,wzLog);
     FILE *file = fopen("debug.log", "a+");
     fwrite(buffer, 1, strlen(buffer), file);
     fclose(file);