Apache ab压力测试 笔记

ab.exe目录

apache\bin
           

ab相关指令：

Options are:
    -n requests     Number of requests to perform（请求的总数，默认是1次。）
    -c concurrency  Number of multiple requests to make（并发数，同一时间请求数。）
    -t timelimit    Seconds to max. wait for responses
    -b windowsize   Size of TCP send/receive buffer, in bytes
    -B address      Address to bind to when making outgoing connections
    -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'  （设置请求头中的Content-type（针对POST/PUT），比如：application/x-www-form-urlencoded。默认是text/plain。）
    -v verbosity    How much troubleshooting info to print
    -w              Print out results in HTML tables （将测试结果打印到HTML表格中。）
    -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.（ 如果后面接的是文件，表示POST请求，文件中包含请求数据，根据数据格式，设置-T参数。）
    -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)
           

实例：

ab -c 300 -n 300 "http://www.abc.com:80/test/aaaa?a=1&b=2&c=3"
           

测试结果样例：

Concurrency Level    并发数多少，等于-c后面的数值
Time taken for tests    测试总耗时
Complete requests    成功收到返回的数目
Failed requests    请求失败数目，可能因为网络连接，异常，请求数据长度等等
Non-2xx responses    表示返回的HTTP status code不是2xx的数目（比如404,401,500...），如果都是2xx，这个指标不显示在结果里面
Requests per second    每秒请求数，等于总请求数/测试总耗时
Time per request    每一个请求平均花费时间。第一个Time per request等于concurrency * timetaken * 1000 / done，第二个Time per request（mean, across all concurrency requests）等于timetaken * 1000 / done，第一个可以理解为用户平均请求等待时间，第二可以理解为服务器平均请求等待时间