线程CPU占用100%的问题怎么定位

上上周生产出现问题，记录一下定位问题的方案，原创不易，欢迎关注

测试代码：

@RestController
@RequestMapping("/test")
public class TestController {
   private static Logger log = LoggerFactory.getLogger(TestController.class);
   @GetMapping("/test")
   public boolean test(){
       Thread t1 = new Thread(new ThreadOne());
       t1.setName("one");
       Thread t2 = new Thread(new ThreadTwo());
       t2.setName("two");

       t1.start();
       t2.start();
       return true;
  }

   public  class ThreadOne implements Runnable {
       public void run() {
           int a = 0;
           while (true) {
               a++;
               try {
                   log.info("[ThreadOne]当前a等于:{}",a);
                   Thread.sleep(10);
              } catch (InterruptedException e) {
                   e.printStackTrace();
              }
          }
      }
  }

   p