tomcat7.0性能优化-挑战极限精简版

服务器关键配置（2个物理CPU，每个CPU是4核心8线程）
Intel(R) Xeon(R) CPU E5620 @2.40GHz

附件
${tomcat_home}/conf/server.xml的配置，已经经过生产环境高并发的检验
操作系统内核优化/etc/sysctl.conf
压力测试的空跑JSP文件test.jsp

以下使用apache-bench做的压力测试
你的tomcat空跑QPS能达到 27522.05 [#/sec]吗？

./ab -n 50000 -c 1024 http://10.10.224.27:8092/performance/test.jsp
Server Software:        Apache-Coyote/1.1
Server Hostname:        10.10.224.27
Server Port:            8092

Document Path:          /performance/test.jsp
Document Length:        253 bytes

Concurrency Level:      1024
Time taken for tests:   1.090 seconds
Complete requests:      30000
Failed requests:        0
Write errors:           0
Total transferred:      15130782 bytes
HTML transferred:       7625673 bytes
Requests per second:    27522.05 [#/sec] (mean)
Time per request:       37.207 [ms] (mean)
Time per request:       0.036 [ms] (mean, across all concurrent requests)
Transfer rate:          13555.67 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        2    5   1.2      5      17
Processing:     4    7   1.3      7      22
Waiting:        2    5   1.3      5      15
Total:          9   12   1.8     12      37

Percentage of the requests served within a certain time (ms)
  50%     12
  66%     13
  75%     13
  80%     13
  90%     13
  95%     14
  98%     17
  99%     22
100%     37 (longest request)