android 多线程问题.

[ajq1989]

private void test(){
		for (int i = 0; i < NUM; i++) {
			final int No = i;
			Thread thread = new Thread(new Runnable() {
				
				@Override
				public void run() {
					// System.out.println("Thread:" + No);
					// TODO Auto-generated method stub
					Thread.currentThread().setName(No+"");
					HttpClient httpClient = new DefaultHttpClient();
					//设置请求超时
					httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 3000);
					//设置读取超时
					httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT,3000);
					HttpGet get = new HttpGet(URL);
					try {
						HttpResponse response = httpClient.execute(get);
						if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
							String strResult = EntityUtils.toString(response
									.getEntity());
							Log.i("ThreadID:" + Thread.currentThread().getName(),
									strResult);
							System.out.println(Thread.currentThread().getName());
							System.out.println(strResult);
						} else {
							System.out.println(Thread.currentThread().getName()+"请求失败");
						}
						Thread.sleep((long) Math.random() * 1000);
					}catch (InterruptedException e) {
						// TODO: handle exception
						Log.i("ThreadID:" + Thread.currentThread().getName(),
								"请求失败");
						System.out.println(Thread.currentThread().getName()+"线程阻塞请求失败");
						e.printStackTrace();
					}catch (IOException e) {
						// TODO: handle exception
						e.printStackTrace();
						Log.i("ThreadID:" + Thread.currentThread().getName(),
						"请求失败");
						System.out.println(Thread.currentThread().getName()+"请求失败");
					}
					catch (Exception e) {
						// TODO: handle exception
						Log.i("ThreadID:" + Thread.currentThread().getId(),
						"请求失败");
						System.out.println(Thread.currentThread().getId()+"请求失败");
						e.printStackTrace();
					}
				}
			});
			thread.start();
		}
	}

要求是每个线程返回响应信息.代码是否有问题呢.
我在硬件配置高的安卓机器上运行没问题. 可以输出每个线程的响应信息.
在配置较低的机器上.直接卡死. 每个线程都抛出异常.
我是要测试一个压力问题. 这两种情况说明什么问题了. 还是我的代码写得有问题.