TOMCAT7的三种模式，我分别做了一次压力测试，结果如下，仅供参考：
<Connector port="8080" protocol="HTTP/1.1"
Concurrency Level: 600
Time taken for tests: 40.851 seconds
Complete requests: 500000
Failed requests: 0
Write errors: 0
Total transferred: 1247002494 bytes
HTML transferred: 1121002242 bytes
Requests per second: 12239.72 [#/sec] (mean)
Time per request: 49.021 [ms] (mean)
Time per request: 0.082 [ms] (mean, across all concurrent requests)
Transfer rate: 29810.48 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 10 175.5 1 9000
Processing: 0 39 71.6 9 1267
Waiting: 0 37 65.3 8 1259
Total: 1 49 190.6 13 9043
Percentage of the requests served within a certain time (ms)
50% 13
66% 39
75% 56
80% 74
90% 115
95% 147
98% 200
99% 245
100% 9043 (longest request)
<Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol"
ab -n 500000 -c 600 http://172.17.6.203:8080/examples/jsp/jsp2/el/basic-comparisons.jsp
Concurrency Level: 600
Time taken for tests: 39.503 seconds
Complete requests: 500000
Failed requests: 7
(Connect: 0, Receive: 0, Length: 4, Exceptions: 3)
Write errors: 0
Total transferred: 1246990024 bytes
HTML transferred: 1120991032 bytes
Requests per second: 12657.42 [#/sec] (mean)
Time per request: 47.403 [ms] (mean)
Time per request: 0.079 [ms] (mean, across all concurrent requests)
Transfer rate: 30827.50 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 34 311.9 5 9013
Processing: 0 12 26.5 8 850
Waiting: 0 10 23.8 7 639
Total: 1 46 315.6 13 9033
Percentage of the requests served within a certain time (ms)
50% 13
66% 16
75% 21
80% 24
90% 30
95% 34
98% 90
99% 591
100% 9033 (longest request)
<Connector port="8080" protocol="org.apache.coyote.http11.Http11AprProtocol"
ab -n 500000 -c 600 http://172.17.6.203:8080/examples/jsp/jsp2/el/basic-comparisons.jsp
Concurrency Level: 600
Time taken for tests: 40.567 seconds
Complete requests: 500000
Failed requests: 0
Write errors: 0
Total transferred: 1247000000 bytes
HTML transferred: 1121000000 bytes
Requests per second: 12325.19 [#/sec] (mean)
Time per request: 48.681 [ms] (mean)
Time per request: 0.081 [ms] (mean, across all concurrent requests)
Transfer rate: 30018.58 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 6 107.7 3 3014
Processing: 0 42 70.7 7 1754
Waiting: 0 41 68.1 7 1745
Total: 1 49 130.1 10 3285
Percentage of the requests served within a certain time (ms)
50% 10
66% 33
75% 64
80% 86
90% 134
95% 165
98% 211
99% 251
100% 3285 (longest request)