ubuntu中安装apache ab命令进行简单压力测试

1.安裝ab命令

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sudo apt-get install apache2-utils

2.ab命令参数说明

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Usage: ab [options] [http[s]://]hostname[:port]/path

Options are:

//总的请求数

-n requests Number of requests to perform宅

//一次同时并发的请求数 总的请求数(n)=次数*一次并发数(c)

-c concurrency Number of multiple requests to make

-t timelimit Seconds to max. wait for responses

-b windowsize Size of TCP send/receive buffer, in bytes

-p postfile File containing data to POST. Remember also to set -T

-u putfile File containing data to PUT. Remember also to set -T

-T content-type Content-type header for POSTing, eg.

'application/x-www-form-urlencoded'

Default is 'text/plain'

-v verbosity How much troubleshooting info to print

-w Print out results in HTML tables

-i Use HEAD instead of GET

-x attributes String to insert as table attributes

-y attributes String to insert as tr attributes

-z attributes String to insert as td or th attributes

-C attribute Add cookie, eg. 'Apache=1234. (repeatable)

-H attribute Add Arbitrary header line, eg. 'Accept-Encoding: gzip'

Inserted after all normal header lines. (repeatable)

-A attribute Add Basic WWW Authentication, the attributes

are a colon separated username and password.

-P attribute Add Basic Proxy Authentication, the attributes

are a colon separated username and password.

-X proxy:port Proxyserver and port number to use

-V Print version number and exit

-k Use HTTP KeepAlive feature

-d Do not show percentiles served table.

-S Do not show confidence estimators and warnings.

-g filename Output collected data to gnuplot format file.

-e filename Output CSV file with percentages served

-r Don't exit on socket receive errors.

-h Display usage information (this message)

-Z ciphersuite Specify SSL/TLS cipher suite (See openssl ciphers)

-f protocol Specify SSL/TLS protocol (SSL2, SSL3, TLS1, or ALL)

3.运行 ab -n 100 -c 10 http://www.meetu.hk/ 对 http://www.meetu.hk/ 进行100次请求，10个并发请求压力测试结果。

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Server Software: lighttpd/1.4.20

Server Hostname: www.meetu.hk

Server Port: 80

Document Path: /

Document Length: 2095 bytes

Concurrency Level: 10

//整个测试持续的时间

Time taken for tests: 3.303 seconds

//完成的请求数量

Complete requests: 100

Failed requests: 0

Write errors: 0

Total transferred: 235200 bytes

HTML transferred: 209500 bytes

//平均每秒处理30个请求

Requests per second: 30.27 [#/sec] (mean)

//平均每个请求处理时间为330毫秒 注:这里将一次10个并发请求看成一个整体

Time per request: 330.335 [ms] (mean)

//平均每个并发请求处理 时间 为33毫秒

Time per request: 33.034 [ms] (mean, across all concurrent requests)

Transfer rate: 69.53 [Kbytes/sec] received

Connection Times (ms)

min mean[+/-sd] median max

Connect: 51 170 35.9 178 230

Processing: 60 153 64.5 121 263

Waiting: 55 148 64.4 115 258

Total: 235 322 59.9 299 437

Percentage of the requests served within a certain time (ms)

//在这100个请求中有50%在299毫秒内完成

50% 299

//在这100个请求中有66%在312毫秒内完成

66% 312

75% 383

80% 412

90% 431

95% 432

98% 436

99% 437

100% 437 (longest request)