Only if a message happens frequently will it be a big performance problem. Because then it's triggering a filesystem journal flush every 5 seconds, which blocks in the log write, which blocks the shell, which is seen as screen stutter.
Only if a message happens frequently will it be a big performance problem. Because then it's triggering a filesystem journal flush every 5 seconds, which blocks in the log write, which blocks the shell, which is seen as screen stutter.