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POMultiple tasks processed by a java thread are delaying another java thread
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copied!<p>One of the things a core java server i'm running does is process two type of tasks (T1 and T2) . Originally these tasks were being processed from the same queue and thread. At times the queue contains about 1000 T1 tasks which cause delays for the next T2 task. So i decided to change the architecture and process each task in a separate thread and separate queue. But it looks like the JVM will still process the ~1000 T1 tasks (about .6 seconds) before switching to the other thread and processing T2 tasks. </p> <p>I'm running on a quad core machine running "Red Hat Enterprise Linux Server release 6.1 (Santiago)". </p> <p>I'm assuming that the two threads are being run on the same CPU. </p> <p>Is there any way to facilitate the OS or JVM to switch more often? Also is there a way to see which thread is being processed by which processor?</p> <p>I've verified that both threads are running as separate threads using a debugger.</p> <p>One thread is created using</p> <pre><code>this.executor.Executors.newSingleThreadExecutor(); </code></pre> <p>And tasks are submitted using</p> <pre><code>executor.submit(new Task2(..)); </code></pre> <p>The other thread is legacy code that manages it's own queue:</p> <pre><code>private final BlockingQueue<...> workQueue = new LinkedBlockingQueue<...>(); .... public void submit(Task1 task) { workQueue.add(task); } .... public void run() { while (alive){ try{ Task1 task = workQueue.take(); processwork(task); } .... </code></pre>

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