AB 사용법 - Apache Benchmarking

]# ./ab -h

Usage: ./ab [options] [http://]hostname[:port]/path
Options are:
    -n requests  Number of requests to perform : 벤치마킹을 위한 요청수
    -c concurrency Number of multiple requests to make : 하나의 요청당 체크할 다중 요구수 (기본값 : 1)
    -t timelimit Seconds to max. wait for responses : 제한시간
    -p postfile  File containg data to POST : POST 할 파일 지정
    -T content-type Content-type header for POSTing
    -v verbosity    How much troubleshooting info to print : 자세한 헤더정보 출력 (유용함)
    -w              Print out results in HTML tables : HTML 형태로 출력 (유용함)
    -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) : 쿠키 사용시
    -H attribute    Add Arbitrary header line, eg. 'Accept-Encoding: zop'
                       Inserted after all normal header lines. (repeatable)
    -A attribute    Add Basic WWW Authentication, the attributes
                       are a colon separated username and password. : 사용자 인증을 요하는 페이지 체크시 아이디:비밀번호
    -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 : 하나의 세션을 맺은 상태에서 여러개의 요구가 하나의 세션으로 인식
    -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)

Example)

]# ./ab -c 30 -n 10 http://www.naver.com/

This is ApacheBench, Version 1.3d <$Revision: 1.73 $> apache-1.3
Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright (c) 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking www.naver.com (be patient).....done
Server Software:        Apache                                            
Server Hostname:        www.naver.com
Server Port:            80
Document Path:          /
Document Length:        74556 bytes
Concurrency Level:      30
Time taken for tests:   0.151 seconds
Complete requests:      10
Failed requests:        8
   (Connect: 0, Length: 8, Exceptions: 0)
Broken pipe errors:     0
Total transferred:      1096903 bytes
HTML transferred:       1085914 bytes
Requests per second:    66.23 [#/sec] (mean)
Time per request:       453.00 [ms] (mean)
Time per request:       15.10 [ms] (mean, across all concurrent requests)
Transfer rate:          7264.26 [Kbytes/sec] received
Connnection Times (ms)
              min  mean[+/-sd] median   max
Connect:        3     3    0.3      3     5
Processing:    38    72   34.8     80   148
Waiting:       33    71   34.7     79   147
Total:         38    76   34.4     83   151
WARING: The median and mean for the initial connection time are not within a normal deviation
        These results are propably not that reliable.

Percentage of the requests served within a certain time (ms)
  50%     83
  66%     83
  75%     94
  80%     98
  90%    151
  95%    151
  98%    151
  99%    151
 100%    151 (last request)