Number of concurrencies - In Apache's ab test, how many requests are there for 10 concurrencies?
Using the ab test tool that comes with Apache, how many requests will there be for 10 concurrencies? How is the concurrency calculated? Is it the number of requests in one second or the number of requests within a certain period of time?
D:\wamp\bin\apache\apache2.4.9\bin>ab -n 100 -c 10 http://www.baidu.com/
This is ApacheBench, Version 2.3 <$Revision: 1554214 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking www.baidu.com (be patient).....done
Server Software: BWS/1.1
Server Hostname: www.baidu.com
Server Port: 80
Document Path: /
Document Length: 52980 bytes
Concurrency Level: 10
Time taken for tests: 12.121 seconds
Complete requests: 100
Failed requests: 99
(Connect: 0, Receive: 0, Length: 99, Exceptions: 0)
Total transferred: 5368249 bytes
HTML transferred: 5300179 bytes
Requests per second: 8.25 [#/sec] (mean)
Time per request: 1212.069 [ms] (mean)
Time per request: 121.207 [ms] (mean, across all concurrent requests)
Transfer rate: 432.52 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 25 119 522.7 27 3103
Processing: 56 1067 1384.7 246 3691
Waiting: 27 207 603.1 84 3157
Total: 87 1186 1431.0 273 3717
Percentage of the requests served within a certain time (ms)
50% 273
66% 445
75% 3268
80% 3276
90% 3357
95% 3457
98% 3631
99% 3717
100% 3717 (longest request)
D:\wamp\bin\apache\apache2.4.9\bin>
This sentence explains that Baidu’s average concurrency is only 8.25?
Requests per second: 8.25 [#/sec] (mean)
