超实用压力测试工具－ab工具

ycz@ubuntu:~$ ab
程序“ab”尚未安装。 您可以使用以下命令安装：
sudo apt-get install apache2-utils
ycz@ubuntu:~$ sudo apt-get install apache2-utils

Usage: ab [options] [http[s]://]hostname[:port]/path
Options are:
    -n requests     Number of requests to perform   //请求链接数
    -c concurrency  Number of multiple requests to make at a time   //表示并发数
    -t timelimit    Seconds to max. to spend on benchmarking
                    This implies -n 50000
    -s timeout      Seconds to max. wait for each response
                    Default is 30 seconds
    -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 to use for POST/PUT data, 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.
    -q              Do not show progress when doing more than 150 requests
    -l              Accept variable document length (use this for dynamic pages)
    -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
                    (SSL3, TLS1, TLS1.1, TLS1.2 or ALL)

ycz@ubuntu:~$ ab -n 100 -c 10 http://sewise.21321.com/redistest/RedisSaveToMysqlJson

 Concurrency Level: 100    //并发请求数

 Time taken for tests: 50.872 seconds  //整个测试持续的时间

 Complete requests: 1000   //完成的请求数

 Failed requests: 0  //失败的请求数

 Total transferred: 13701482 bytes  //整个场景中的网络传输量

 HTML transferred: 13197000 bytes  //整个场景中的HTML内容传输量

  Requests per second: 19.66 [#/sec] (mean) //吞吐率，大家最关心的指标之一，相当于 LR 中的每秒事务数，后面括号中的 mean 表示这是一个平均值

  Time per request: 5087.180 [ms] (mean) //用户平均请求等待时间，大家最关心的指标之二，相当于 LR 中的平均事务响应时间，后面括号中的 mean 表示这是一个平均值

  Time per request: 50.872 [ms] (mean, across all concurrent requests) //服务器平均请求处理时间，大家最关心的指标之三

  Transfer rate: 263.02 [Kbytes/sec] received    //平均每秒网络上的流量，可以帮助排除是否存在网络流量过大导致响应时间延长的问题