ab 测试工具

-bash-4.1# ab -c 100 -n 1000 http://tripb2b.com/

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 tripb2b.com (be patient)

completed 100 requests

completed 200 requests

completed 300 requests

completed 400 requests

completed 500 requests

completed 600 requests

completed 700 requests

completed 800 requests

completed 900 requests

completed 1000 requests

finished 1000 requests

server software:        nginx

server hostname:        tripb2b.com

server port:            80

document path:          /

document length:        154 bytes

concurrency level:      100

time taken for tests:   0.277 seconds

complete requests:      1000

failed requests:        0

write errors:           0

non-2xx responses:      1032

total transferred:      361200 bytes

html transferred:       158928 bytes

requests per second:    3605.53 [#/sec] (mean)

time per request:       27.735 [ms] (mean)

time per request:       0.277 [ms] (mean, across all concurrent requests)

transfer rate:          1271.79 [kbytes/sec] received

connection times (ms)

              min  mean[+/-sd] median   max

connect:        3   12   3.2     13      23

processing:     4   13   2.7     13      23

waiting:        3   13   2.7     13      23

total:          7   26   4.0     26      43

percentage of the requests served within a certain time (ms)

  50%     26

  66%     27

  75%     27

  80%     28

  90%     30

  95%     32

  98%     33

  99%     35

 100%     43 (longest request)