Use the Curl command to view request response time methods _javascript Tips

Curl command to view request Response time

# Curl-o/dev/null-s-W%{time_namelookup}::%{time_connect}::%{time_starttransfer}::%{time_total}::%{speed_ Download} "\ n" 
http://www.36nu.com 
0.014::0.015::0.018::0.019::1516256.00

-O: The curl returned HTML, JS write to the garbage collection station [/dev/null]

-S: Remove all States

-W: Write RT in the following format

Time_namelookup:dns resolution of domain name www.36nu.com time

Time to establish a TCP connection time_commect:client and the server side

Time_starttransfer: Making a request from the client; the time of the server responding to the first byte in the Web

Time_total:client a request to the Web server to send all the corresponding data time

Speed_download: Next week speed Unit byte/s

The above command and the return result can be understood in this way:

0.014:dns server resolves the www.36nu.com time unit is s

0.015:client issue request, to C/s to establish TCP time; it includes the time of DNS parsing

0.018:client the request is issued, the time when the first byte of the s response is issued, including the previous 2 time

0.019:client the request; to s sends the response data to the client and closes the connect time

1516256.00: Speed of downloading data

Establish TCP connection to server returns the first byte of client time: 0.018s–0.015s = 0.003s

Time server sends response data to client: 0.019s–0.018 = 0.01s

The above is a small set to the introduction of the use of Curl command to view the request response time method, I hope to help you, if you have any questions please give me a message, small series will promptly reply to everyone. Here also thank you very much for the cloud Habitat Community website support!