1，首先需要本地有個format的檔案。方便對輸出格式化：

檔案內容如下：

\n
            time_namelookup:  %{time_namelookup}\n
               time_connect:  %{time_connect}\n
            time_appconnect:  %{time_appconnect}\n
           time_pretransfer:  %{time_pretransfer}\n
              time_redirect:  %{time_redirect}\n
            time_pretransfer:
 
 %{time_pretransfer}\n
         time_starttransfer:  %{time_starttransfer}\n
                            ----------\n
                 time_total:  %{time_total}\n
\n

2，然後執行如下命令：

 curl -lw  "@format" http://7ktr6y.com5.z0.glb.qiniucdn.com/liuhanlin-movi -o /dev/null

3，執行結果為：

liuhanlindemac:private yishiyaonie$ 
 
 curl -lw  "@format" http://7ktr6y.com5.z0.glb.qiniucdn.com/liuhanlin-movi -o /dev/null
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 19.8M  100 19.8M    0     0   662k      0  0:00:30  0:00:30 --:--:-- 1204
 
k

            time_namelookup:  0.035
               time_connect:  0.048
            time_appconnect:  0.000
           time_pretransfer:  0.049
              time_redirect:  0.000
            time_pretransfer: 0.049
         time_starttransfer:  0.164
                            ----------
                 time_total:  30.643

curl -Lw  "@format" "http://106.3.62.197/2015-09-27/1443362916818u2293430.mp4?wsiphost=local"  -H"Host:cdn.qupeiyin.cn" -o /dev/null

4.結果分析：

            time_namelookup:  dns解析時間
               time_connect:  建立連結時間
            time_appconnect:  0.000
              time_redirect:  跳轉時間
            time_pretransfer: 開始準備傳輸時間
         time_starttransfer:  開始傳輸時間
                            ----------
                 time_total:  總的用時