Apache ab壓力測試 筆記

ab.exe目錄

apache\bin
           

ab相關指令：

Options are:
    -n requests     Number of requests to perform（請求的總數，預設是1次。）
    -c concurrency  Number of multiple requests to make（并發數，同一時間請求數。）
    -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'  （設定請求頭中的Content-type（針對POST/PUT），比如：application/x-www-form-urlencoded。預設是text/plain。）
    -v verbosity    How much troubleshooting info to print
    -w              Print out results in HTML tables （将測試結果列印到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.（ 如果後面接的是檔案，表示POST請求，檔案中包含請求資料，根據資料格式，設定-T參數。）
    -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)
           

執行個體：

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

測試結果樣例：

Concurrency Level    并發數多少，等于-c後面的數值
Time taken for tests    測試總耗時
Complete requests    成功收到傳回的數目
Failed requests    請求失敗數目，可能因為網絡連接配接，異常，請求資料長度等等
Non-2xx responses    表示傳回的HTTP status code不是2xx的數目（比如404,401,500...），如果都是2xx，這個名額不顯示在結果裡面
Requests per second    每秒請求數，等于總請求數/測試總耗時
Time per request    每一個請求平均花費時間。第一個Time per request等于concurrency * timetaken * 1000 / done，第二個Time per request（mean, across all concurrency requests）等于timetaken * 1000 / done，第一個可以了解為使用者平均請求等待時間，第二可以了解為伺服器平均請求等待時間