I'm trying to monitor serial port communication using strace -s9999 -o serialtrace.log -eread,write,ioctl command. After few normal logging messages I got guge amount of message --- SIGIO (I/O possible) @ 0 (0) ---. What does it means? How to get normal information instead of these lines?
strace got message --- SIGIO (I/O possible) @ 0 (0) ---
strace