curl -o /dev/null -s -w "time_namelookup:%{time_namelookup}::time_connect:%{time_connect}::time_starttransfer:%{time_starttransfer}::time_total:%{time_total}::speed_download:%{speed_download}::http_code:%{http_code}" https://www.qq.com
time_namelookup: DNS resolution time domain of www.bnxb.com
time_commect: client and server-side TCP connection setup time
time_starttransfer: request from Client; the web server in response to the first byte of a
time_total: client request; all of the web server corresponding data transmission time will
speed_download: week speed unit byte / s