小编Bil*_*ikh的帖子

我在分析 vaadin 7.0 JAVA 应用程序的线程转储和用 Spring MVC 编写的集成层时遇到困难。处于等待状态的线程过多，导致应用程序在高峰时段变慢，并导致简单代码的执行延迟长达 10 秒。以下是等待线程中出现的跟踪：-

priority:5 - threadId:0x00007f98b48de800 - nativeId:0x6511 - nativeId (decimal):25873 - state:WAITING
stackTrace:
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000006d5444af0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

我在应用程序的许多地方使用 API 轮询，以下是我如何进行 API 轮询的代码：-

@Override
        public void run()
        {
            int counter = 1;

            while (true)
            {
                try
                {
                    if (counter == 1)
                        Thread.sleep(5000);
                    else
                        Thread.sleep(10000);

                    System.out.println("Call Some API");
                    if (counter …