Apache性能测试



Apache自带的一个小工具, ab(简称ApacheBench), 可以同时模拟多个并发请求.

Usage: ./ab [options] [http[s]://]hostname[:port]/path
Options are:
    -n requests     Number of requests to perform
    -c concurrency  Number of multiple requests to make
    -t timelimit    Seconds to max. wait for responses
    -p postfile     File containing data to POST
    -T content-type Content-type header for POSTing
    -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
    -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)

一个简单的测试:

/*向www.sina.com 发送10个请求(-n), 每个请求同时并发10个请求(-c) */
# ./ab -n 10 -c 10 http://www.sina.com/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.sina.com (be patient)…..done

Server Software:        Apache/2.0.54
Server Hostname:        www.sina.com
Server Port:            80

Document Path:          /
Document Length:        231 bytes

Concurrency Level:      10
Time taken for tests:   0.268 seconds  /*测试持续时间*/
Complete requests:      10                          /*完成请求数量*/
Failed requests:        0                                  /*失败请求数量*/
Write errors:           0
Non-2xx responses:      10
Total transferred:      6253 bytes             /*网络传输量*/
HTML transferred:       2310 bytes           /*html内容传输量*/
Requests per second:    37.33 [#/sec] (mean)  /*每秒事务数(平均值)*/
Time per request:       267.848 [ms] (mean)       /*事务响应时间(平均值)*/
Time per request:       26.785 [ms] (mean, across all concurrent requests)  /*并发事务响应时间(平均值)*/
Transfer rate:          22.80 [Kbytes/sec] received  /*每秒网络流量*/

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        1    1   0.2      1       1
Processing:   183  204  26.7    195     266
Waiting:      183  204  26.7    195     266
Total:        184  205  26.8    196     268

/*以下内容为整个测试中所有请求的响应情况. 在测试中每个请求都有一个响应时间, 其中 66%的用户响应时间小于196毫秒，75%的用户响应时间小于197 毫秒，最大的响应时间小于268毫秒*/
Percentage of the requests served within a certain time (ms)
  50%    196
  66%    196
  75%    197
  80%    239
  90%    268
  95%    268
  98%    268
  99%    268
100%    268 (longest request)