$ ab -t 10 -c 200 'url' 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 tickets.2345.com (be patient) Completed 5000 requests Completed 10000 requests Completed 15000 requests Completed 20000 requests Completed 25000 requests Completed 30000 requests Finished 34664 requests Server Software: nginx [web服務器軟件及版本] Server Hostname: tickets.2345.com [表示請求的URL中的主機部分名稱] Server Port: 12345 [被測試的Web服務器的監聽端口] Document Path: /tickets/m/help/getRootCategory?product=1&type=0 [ 請求的頁面路徑] Document Length: 298 bytes [頁面大小] Concurrency Level: 200 [并發數] Time taken for tests: 10.000 seconds [測試總共花費的時間] Complete requests: 34664 [完成的請求數] Failed requests: 34136 [失敗的請求數，這里的失敗是指請求的連接服務器、發送數據、接收數據等環節發生異常，以及無響應后超時的情況。對于超時時間的設置可以用ab的-t參數。如果接受到的http響應數據的頭信息中含有2xx以外的狀態碼，則會在測試結果顯示另一個名為“Non-2xx responses”的統計項，用于統計這部分請求數，這些請求并不算是失敗的請求。 只要出現Failed requests就會多一行數據來統計失敗的原因，分別有Connect、Length、Exceptions。 Connect 無法送出要求、目標主機連接失敗、要求的過程中被中斷。 Length 響應的內容長度不一致 ( 以 Content-Length 頭值為判斷依據 )。 Exception 發生無法預期的錯誤。] (Connect: 0, Receive: 0, Length: 34136, Exceptions: 0) Write errors: 0 [ 寫入錯誤] Non-2xx responses: 34136 Total transferred: 11432992 bytes [總共傳輸字節數，包含http的頭信息等。使用ab的-v參數即可查看詳細的http頭信息。] HTML transferred: 5823920 bytes [html字節數，實際的頁面傳遞字節數。也就是減去了Total transferred中http響應數據中頭信息的長度。] Requests per second: 3466.37 [#/sec] (mean) [每秒處理的請求數，服務器的吞吐量] Time per request: 57.697 [ms] (mean) [用戶平均請求等待時間] Time per request: 0.288 [ms] (mean, across all concurrent requests) [服務器平均處理時間] Transfer rate: 1116.49 [Kbytes/sec] received [平均傳輸速率（每秒收到的速率）。可以很好的說明服務器在處理能力達到限制時，其出口帶寬的需求量。] Connection Times (ms) [壓力測試時的連接處理時間。] min mean[+/-sd] median max Connect: 0 0 1.2 0 17 Processing: 7 53 276.4 20 2617 Waiting: 7 53 276.4 20 2617 Total: 9 53 276.7 20 2617 Percentage of the requests served within a certain time (ms) 50% 20 66% 21 75% 22 80% 23 90% 24 95% 27 98% 34 99% 2443 100% 2617 (longest request) 復制代碼