curl -o /dev/null -s -w %{http_code}:%{http_connect}:%{content_type}:%{time_namelookup}:%{time_redirect}:%{time_pretransfer}:%{time_connect}:%{time_starttransfer}:%{time_total}:%{speed_download}
使用curl测试web页面响应加载速度的参数明细
[root@localhost tmp]# curl -V
curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.21 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2
Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp
Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz
[root@localhost tmp]# ]
The variables available at this point are:
url_effective The URL that was fetched last. This is most meaningful if you’ve told
curl to follow location: headers.
http_code The numerical response code that was found in the last retrieved
HTTP(S) or FTP(s) transfer. In 7.18.2 the alias response_code was
added to show the same info.
http_connect The numerical code that was found in the last response (from a proxy)
to a curl CONNECT request. (Added in 7.12.4)
time_total The total time, in seconds, that the full operation lasted. The time
will be displayed with millisecond resolution.
time_namelookup
The time, in seconds, it took from the start until the name resolving
was completed.
time_connect The time, in seconds, it took from the start until the TCP connect to
the remote host (or proxy) was completed.
time_appconnect
The time, in seconds, it took from the start until the SSL/SSH/etc
connect/handshake to the remote host was completed. (Added in 7.19.0)
time_pretransfer
The time, in seconds, it took from the start until the file transfer
was just about to begin. This includes all pre-transfer commands and
negotiations that are specific to the particular protocol(s) involved.
time_redirect The time, in seconds, it took for all redirection steps include name
lookup, connect, pretransfer and transfer before the final transaction
was started. time_redirect shows the complete execution time for mul-
tiple redirections. (Added in 7.12.3)
time_starttransfer
The time, in seconds, it took from the start until the first byte was
just about to be transferred. This includes time_pretransfer and also
the time the server needed to calculate the result.
size_download The total amount of bytes that were downloaded.
size_upload The total amount of bytes that were uploaded.
size_header The total amount of bytes of the downloaded headers.
size_request The total amount of bytes that were sent in the HTTP request.
speed_download The average download speed that curl measured for the complete down-
load.
speed_upload The average upload speed that curl measured for the complete upload.
content_type The Content-Type of the requested document, if there was any.
num_connects Number of new connects made in the recent transfer. (Added in 7.12.3)
num_redirects Number of redirects that were followed in the request. (Added in
7.12.3)
redirect_url When a HTTP request was made without -L to follow redirects, this
variable will show the actual URL a redirect would take you to. (Added
in 7.18.2)
ftp_entry_path The initial path libcurl ended up in when logging on to the remote FTP
server. (Added in 7.15.4)
ssl_verify_result
The result of the SSL peer certificate verification that was
requested. 0 means the verification was successful. (Added in 7.19.0)
