curl查看各阶段耗时

curl -w 输出

生成curl的配置文件 http-test.txt

time_namelookup: %{time_namelookup}\n
time_connect: %{time_connect}\n
time_appconnect: %{time_appconnect}\n
time_redirect: %{time_redirect}\n
time_pretransfer: %{time_pretransfer}\n
time_starttransfer: %{time_starttransfer}\n
----------\n
time_total: %{time_total}\n

文件解释

1. time_namelookup: DNS解析时间
2. time_connect：tcp建联时间
3. ime_appconnect：SSL/SSH 等上层协议建立连接的时间，比如 connect/handshake 的时间。注意，即使curl语句中带有-k参数（忽略证书校验），这一项时间仍然存在，因为-k只是忽略证书的校验，本身SSL握手仍然存在。
4. time_redirect：从开始到最后一个请求事务的时间
5. time_pretransfer：从请求开始到开始传输的时间
6. ime_total：这次请求花费的全部时间

测试 curl -w “@http-test.txt” -o /dev/null -s “https://www.baidu.com"

time_namelookup: 0.007418
time_connect: 0.013442
time_appconnect: 0.049275
time_redirect: 0.000000
time_pretransfer: 0.049318
time_starttransfer: 0.056878
----------
time_total: 0.057022

常用时间换算

• TCP建联时间：time_connect - time_namelookup
• 服务器处理时间： time_starttransfer - time_pretransfer
• 内容传输or下载时间： time_total - time_starttransfer
• SSL时间： time_appconnect - time_connect

python美化版本

安装

pip install httpstat

使用

~ ⮀ httpstat  https://www.baidu.com
Connected to 61.135.169.121:443 from 192.168.199.122:65495

HTTP/1.1 200 OK
Accept-Ranges: bytes
Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
Connection: keep-alive
Content-Length: 2443
Content-Type: text/html
Date: Sun, 31 May 2020 02:50:45 GMT
Etag: "588603e7-98b"
Last-Modified: Mon, 23 Jan 2017 13:23:51 GMT
Pragma: no-cache
Server: bfe/1.0.8.18
Set-Cookie: BDORZ=27315; max-age=86400; domain=.baidu.com; path=/

Body stored in: /var/folders/79/fh8h94p55yv172m_5txz5d_80000gp/T/tmpBO_rA6

 DNS Lookup   TCP Connection   TLS Handshake   Server Processing   Content Transfer
[     8ms    |       7ms      |     25ms      |        6ms        |        0ms       ]
            |                |               |                   |                  |
   namelookup:8ms            |               |                   |                  |
                       connect:15ms          |                   |                  |
                                   pretransfer:40ms              |                  |
                                                     starttransfer:46ms             |
                                                                                total:46ms