jetty用的n线程，在高并发下表现并不好，jdk7开始提供了fork/join技术通过工作窃取方式来提升高并发下下的性能，我修改了

org.eclipse.jetty.util.thread.QueuedThreadPool

从线程改用fork/join，性能提升了2.7倍，测试环境是我个人电脑，4核的thinkpad

主要是修改startThread方法

//            Thread thread=newThread(_runnable);
//            thread.setDaemon(_daemon);
//            thread.setPriority(_priority);
//            thread.setName(_name+"-"+thread.getId());
//            _threads.add(thread);

//            thread.start();
            ForkJoinTask action=RecursiveAction.adapt(_runnable);
            _threads.add(action);
            action.fork();
            started=true;

go-wrk压测命令（4线程，6000并发，1百万次，4个cpu都能泡满）

go-wrk -t 4 -n 1000000 -c 6000 http://localhost:8080/ho2

修改之前压测结果

==========================BENCHMARK==========================
URL:				http://localhost:8080/ho2

Used Connections:		6000
Used Threads:			4
Total number of calls:		1000000

===========================TIMINGS===========================
Total time passed:		324.69s
Avg time per request:		736.70ms
Requests per second:		3079.89
Median time per request:	420.89ms
99th percentile time:		3284.82ms
Slowest time for request:	107943.00ms

=============================DATA=============================
Total response body sizes:		19115540
Avg response body per request:		19.12 Byte
Transfer rate per second:		58873.69 Byte/s (0.06 MByte/s)
==========================RESPONSES==========================
20X Responses:		955777	(95.58%)
30X Responses:		0	(0.00%)
40X Responses:		0	(0.00%)
50X Responses:		0	(0.00%)
Errors:			44223	(4.42%)

之后压测结果

==========================BENCHMARK==========================
URL:				http://localhost:8080/ho2

Used Connections:		6000
Used Threads:			4
Total number of calls:		1000000

===========================TIMINGS===========================

Avg time per request:		691.81ms

Median time per request:	586.96ms
99th percentile time:		3068.40ms
Slowest time for request:	4745.00ms

=============================DATA=============================
Total response body sizes:		19769760
Avg response body per request:		19.77 Byte
Transfer rate per second:		169618.76 Byte/s (0.17 MByte/s)
==========================RESPONSES==========================
20X Responses:		988488	(98.85%)
30X Responses:		0	(0.00%)
40X Responses:		0	(0.00%)
50X Responses:		0	(0.00%)
Errors:			11512	(1.15%)

虽然还没有用于生产环境，但就测试结果来看还是不错的