resin并发个数这么高

fxltsbl 2012-03-18 05:47:08

测试了一下resin的并发数，竟然最多有5128个
测试环境：
server端：OS：本人的机子，32位os，3g内存，1.8g双核cpu
resin：-Xmx1400m -Xss64k(设为最小，为了少占内存)
client ：循环创建7000个线程，每个线程循环访问resin100次

测试结果：通过resin控制台看Thread pool中的线程数，最大达到了5128个；

总结：如果os，内存，cpu都是理想的，就resin本身而言，最大并发可以达到5k多；
问题：错误率很高，（7000个线程，每个100次req，线程池最大值5128，错误率42%；（1000个线程，每个100次req，线程池最大值388，错误率15%）；综上所述，应该是说5k多并发是理想状态，实际中可能几百多就差不多了吧，欢迎拍砖

测试代码如下：

public class Test1 {

	public static int success = 0;

	public static int fail = 0;

	public static int reject = 0;

	public static void main(String[] args) throws Exception {

		long a = System.currentTimeMillis();

		ThreadDemo[] td = new ThreadDemo[7000];

		for(int i=0;i<td.length;i++){

			td[i] = new ThreadDemo(i,a);

		}

		for(int i=0;i<td.length;i++){

			td[i].start();

		}

		

	} 

	

	public static  synchronized void setValue(int s,int f,int r){

		success+=s;

		fail+=f;

		reject+=r;

	}



	public static class ThreadDemo extends Thread {

		private int id = 0;

		private long s = 0;

		public ThreadDemo(int id,long s){

			this.id=id;

			this.s=s;

		}

		

		@Override

		public void run() {

			int success = 0;

			int request_fail = 0;

			int request_reject = 0;

			URL url;

			for (int i = 0; i < 100; i++) {

				try {

					url = new URL("http://ip:8080/Project1/test.jsp");

					InputStream is = url.openStream();

					byte[] b = new byte[100];

					StringBuffer sb = new StringBuffer();

					while(is.read(b)!=-1){

						String ss = new String(b,"utf-8");

						if(!"".equals(ss.trim()))

							sb.append(ss.trim());

					}

					is.close();

					success++;

				} catch (ConnectException e) {

					request_fail++;

				}catch(SocketException ee){

					request_reject++;

				}catch(Exception e){

					e.printStackTrace();

				}

			}

			Test1.setValue(success,request_fail,request_reject);

			System.out.println("request  --" + id + "--  url end.take "

					+ (System.currentTimeMillis() - s) + "ms success="+Test1.success+" fail="+Test1.fail+" request_reject="+Test1.reject);

		}

	}



}