Apache服务器(摘抄)

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服务器负载太大而影响程序效率也是很常见的,Apache服务器自带有一个叫AB(ApacheBench)的工具,可以对服务器进行负载测试

同时商城的秒杀功能也会被高负载影响,从而导致超卖现象

  1. 首先安装xampp软件
  2. 进入 c:/xampp/apache/bin

基本用法:

ab -n 全部请求数 -c 并发数测试url

注:可以将ab.exe 加入系统环境变量;或直接切换置 ab 目录执行。如: C:\Windows\System32> cd
C:\xampp\apache\bin

更为详细操作


C:\xampp\apache\bin>ab-n 100 -c 10 http://www.abc.com/index.html

This is ApacheBench, Version 2.0.40-dev<$Revision: 1.146 $> apache-2.0

Copyright 1996 Adam Twiss, Zeus TechnologyLtd,
http://www.zeustech.NET/

Copyright 2006 The Apache SoftwareFoundation, http://www.apache.org/

Benchmarking www.abc.com (bepatient)…done

Server Software: Apache

Server Hostname: www.abc.com

Server Port: 80

Document Path: /index.html

Document Length: 17784 bytes #请求文档大小

Concurrency Level: 10 #并发数

Time taken for tests: 11.898681 seconds #全部请求完成耗时

Complete requests: 100 #全部请求数

Failed requests: 0

Write errors: 0

Total transferred: 1805900 bytes #总传输大小

HTML transferred: 1778400 bytes

Requests per second: 8.40 [#/sec] (mean) #每秒请求数(平均)

Time per request: 1189.868 [ms] (mean) #每次并发请求时间(所有并发)

Time per request: 118.987 [ms] (mean, across all
concurrentrequests

Transfer rate: 148.17 [Kbytes/sec] received #传输速率

Connection Times (ms) #连接时间

                  min mean[+/-sd]  median(中位值)  max

Connect: (#连接) 59 73 11.9 72 132

Processing: (#处理) 86 998538.7 938 2288

Waiting: (#等待) 63 135 106.8 94 663

Total: 155 1072540.6 1004 2362

在一定比例的请求服务时间

50% 1004

66% 1260

75% 1452

80% 1492

90% 1923

95% 2078

98% 2352

99% 2362

100% 2362 (longest request)


#整个场景中所有请求的响应情况,在场景中每个请求都有一个响应时间,其中

50%的用户响应时间小于1104毫秒,

80%的用户响应时间小于1492毫秒,

最大的响应时间小于2362毫秒。

备:由于对发请求,cpu实际上并不是同时处理的,而是按照每个请求获得的时间片逐个轮转处理的,所以,基本上第一个Timeper
request时间约等于第二个Timeper request时间乘以并发请求数。

其它参数:

-n requests 全部请求数

-c concurrency 并发数

-t timelimit 最传等待回应时间

-p postfile POST数据文件

-T content-type POST Content-type

-v verbosity Howmuch troubleshooting info to print

-w Print outresults 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 加入cookie, eg.'Apache=1234. (repeatable)

-H attribute 加入http头, eg.‘Accept-Encoding: gzip’

            Inserted after all normalheader lines. (repeatable)

-A attribute http验证,分隔传递用户名及密码

-P attribute Add Basic Proxy Authentication, theattributes

            are a colon separated usernameand password.

-X proxy:port 代理服务器

-V 查看ab版本

-k Use HTTPKeepAlive feature

-d Do not showpercentiles served table.

-S Do not showconfidence estimators and warnings.

-g filename Output collected data to gnuplot formatfile.

-e filename Output CSV file with percentages served

-h Display usageinformation (this message)

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转载自blog.csdn.net/weixin_44266137/article/details/89220108