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ttfb.sh

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1.0.0

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介绍

测量单个或多个URL的第一字节。可以向您展示最快，最慢和中间的TTFB值以及选项记录所有响应标头。

ttfb.sh的样本运行

 Usage: ttfb [options] url [url...]
	-d debug
	-l <log file> (infers -d) log response headers. Defaults to ./curl.log
	-n <number> of times to test time to first byte
	-o <option> pass options to curl (e.g. -o "-k" will make curl ignore invalid certificates)
	-v verbose output. Show response breakdown (DNS lookup, TLS handshake etc)

隐式使用Curl's -L选项遵循重定向链。

可以通过使用-d来记录所有响应标头（默认日志文件为./curl.log ）。

通过指定-l /some/file来覆盖默认日志文件。

通过指定调用URL的次数来获得最快，最慢和中值TTFB值；使用-n2进行2个测试， -n5 for 5，依此类推。

使用计算%{time_starttransfer¹} - %{time_appconnect²}该计算不包括任何连接开销，以更好地近似DevTool的TTFB图。

st time_starttransfer

从开始的时间到几秒钟，直到第一个字节即将被转移。这包括Time_pretransfer以及服务器计算结果所需的时间。

time_appconnect

从秒开始的时间从开始到SSL/SSH/ETC连接/握手到远程主机。

创世纪

基于https://github.com/sandeepraju的要点

由[email protected]修改，@jaygooby

安装

从主分支下载脚本，并使其可执行：

 curl -LJO https://raw.githubusercontent.com/jaygooby/ttfb.sh/master/ttfb
chmod +x ./ttfb

用法

 Usage: ttfb [options] url [url...]
	-d debug
	-l <log file> (infers -d) log response headers. Defaults to ./curl.log
	-n <number> of times to test time to first byte
	-o <option> pass options to curl (e.g. -o "-k" will make curl ignore invalid certificates)
	-v verbose output. Show response breakdown (DNS lookup, TLS handshake etc)

例子

基本用法：

 $ ttfb example.com
.227436

带有详细响应分解的基本用法：

 $ ttfb -v https://example.com
DNS lookup: 0.005152 TLS handshake: 0.000000 TTFB including connection: 0.200831 TTFB: .200831 Total time: 0.201132

多次测试：

 $ ttfb -n 5 example.com/example/url
.....
fastest .177263 slowest .214302 median .179957

测试多个URL：

 $ ttfb bbc.co.uk news.bbc.co.uk
bbc.co.uk        .049985
news.bbc.co.uk   .054122

多次测试多个URL：

 $ ttfb -n 5 bbc.co.uk news.bbc.co.uk
.....
.....
bbc.co.uk       fastest .030936 slowest .057755 median .034663
news.bbc.co.uk  fastest .031413 slowest .182791 median .035001

指定多个测试时，详细响应分解：

 $ ttfb -v -n 5 bbc.co.uk
DNS lookup: 0.005335 TLS handshake: 0.102314 TTFB including connection: 0.148328 TTFB: .046014 Total time: 0.646115
DNS lookup: 0.005322 TLS handshake: 0.102609 TTFB including connection: 0.150693 TTFB: .048084 Total time: 0.644611
DNS lookup: 0.004277 TLS handshake: 0.102066 TTFB including connection: 0.172199 TTFB: .070133 Total time: 1.196256
DNS lookup: 0.004444 TLS handshake: 0.107375 TTFB including connection: 0.160771 TTFB: .053396 Total time: 0.637290
DNS lookup: 0.005352 TLS handshake: 0.118882 TTFB including connection: 0.168772 TTFB: .049890 Total time: 0.653761

fastest .046014 slowest .070133 median .049890

将所有响应标头记录到多个URL的所有响应标头：

 ttfb -d -n 2 bbc.co.uk https://www.bbc.co.uk/weather
..
..
bbc.co.uk                      fastest .027550 slowest .055215 median .041382
https://www.bbc.co.uk/weather  fastest .101020 slowest .297923 median .199471

$ ls *.log
bbc_co_uk-curl.log                     https___www_bbc_co_uk_weather-curl.log

$ cat https___www_bbc_co_uk_weather-curl.log
HTTP/2 200
server: openresty
x-cache-action: MISS
vary: Accept-Encoding,X-BBC-Edge-Cache,X-BBC-Edge-Scheme,X-CDN
x-cache-age: 0
cache-control: private, stale-while-revalidate=10, max-age=0, must-revalidate
content-type: text/html;charset=utf-8
x-mrid: w1
date: Thu, 11 Apr 2019 17:08:07 GMT
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
x-lb-nocache: true
x-msig: 24e37f81323984e4e45b8048f9e3c94a
x-frame-options: SAMEORIGIN
content-length: 1077454

HTTP/2 200
server: openresty
x-cache-action: MISS
vary: Accept-Encoding,X-BBC-Edge-Cache,X-BBC-Edge-Scheme,X-CDN
x-cache-age: 0
cache-control: private, stale-while-revalidate=10, max-age=0, must-revalidate
content-type: text/html;charset=utf-8
x-mrid: w1
date: Thu, 11 Apr 2019 17:08:08 GMT
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
x-lb-nocache: true
x-msig: 24e37f81323984e4e45b8048f9e3c94a
x-frame-options: SAMEORIGIN
content-length: 1077454