for {i++}

执行 lsof +L1 rsyslogd  2163711            root   38w   REG  253,1 28035581675     0    395729 /var/log/messages-202210071665085022 (deleted)    这个rsyslogd 占了20多G的日志 执行systemctl stop rsyslog 解决

  cpan App::cpanminus cpanm --sudo bignum change "use bignum" by "use bigint" 

 undefined reference to `__emutls_v._ZN6google8protobuf8internal15ThreadSafeArena13thread_cache_E'   增加  IF (WIN32) add_definitions (-DPROTOBUF_USE_DLLS) ENDIF ()

原因是：  listen的socket需要单独设置下，不然有问题 auto fd = evconnlistener_get_fd(listener) set_socket_buffer(fd , MAX_SOCKET_BUFFER )    

set( CMAKE_EXE_LINKER_FLAGS " ${ CMAKE_EXE_LINKER_FLAGS } -Wl,-E ")

 给glog关闭gflags set( WITH_GFLAGS OFF CACHE BOOL "" FORCE )   然后手动添加宏定义即可 add_compile_definitions( HAVE_LIB_GFLAGS )