以下是一台阿里云机器，跑的测试结果，有知道这样的结果能反映什么问题吗？
目前小弟遇到一个性能问题，单人操作的时候速度还行，但是20 人左右同时操作的时候，就感觉很慢了。

[root@AY1311281530504461fdZ bin]# ./ab -n 1000 -c 700 localhost/test.jsp
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustec h.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.tdaijia.net (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: Apache-Coyote/1.1
Server Hostname: localhost
Server Port: 80

Document Path: /driver/list.jsp
Document Length: 6026 bytes

Concurrency Level: 700
Time taken for tests: 25.032 seconds
Complete requests: 1000
Failed requests: 0
Write errors: 0
Total transferred: 6287000 bytes
HTML transferred: 6026000 bytes
Requests per second: 39.95 #/sec
Time per request: 17522.387 ms
Time per request: 25.032 ms
Transfer rate: 245.27 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 15 11.4 17 33
Processing: 15 9499 9491.1 7964 25000
Waiting: 15 9499 9491.1 7964 25000
Total: 19 9514 9500.1 7991 25031

Percentage of the requests served within a certain time (ms)
50% 7991
66% 8915
75% 21802
80% 21985
90% 24811
95% 24943
98% 25004
99% 25018
100% 25031 (longest request)

用ab做压力测试发现apche的并发量不能提高

fanxinhu

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