change log size to 50M each, total num is 200.

log_process_module.h

@@ -19,8 +19,8 @@
 
 #define LOG_BUF_SIZE        2000
 
-#define ROLLING_LOG_FILE_SIZE       (500*1024*1024)
-#define ROLLING_LOG_FILE_NUM        20
+#define ROLLING_LOG_FILE_SIZE       (50*1024*1024)
+#define ROLLING_LOG_FILE_NUM        200
 
 #define LOG_FILE_NUM        1
 extern log4cpp::Appender *appender[LOG_FILE_NUM];