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    <p>It is not because of the <code>BlockingCollection</code> or <code>ConcurrentQueue</code>, but the while loop:</p> <pre><code>while(socket.Connected) { while (!listOfQueueItems.IsEmpty) { /*code*/ } } </code></pre> <p>Of course it will take the cpu down; because of if the queue is empty, then the while loop is just like:</p> <pre><code>while (true) ; </code></pre> <p>which in turn will eat the cpu resources.</p> <p>This is not a good way of using <code>ConcurrentQueue</code> you should use <code>AutoResetEvent</code> with it so whenever item is added you will be notified. Example:</p> <pre><code>private ConcurrentQueue&lt;Data&gt; _queue = new ConcurrentQueue&lt;Data&gt;(); private AutoResetEvent _queueNotifier = new AutoResetEvent(false); //at the producer: _queue.Enqueue(new Data()); _queueNotifier.Set(); //at the consumer: while (true)//or some condition { _queueNotifier.WaitOne();//here we will block until receive signal notification. Data data; if (_queue.TryDequeue(out data)) { //handle the data } } </code></pre> <p>For a good usage of the <code>BlockingCollection</code> you should use the <code>GetConsumingEnumerable()</code> to wait for the items to be added, Like:</p> <pre><code>//declare the buffer private BlockingCollection&lt;Data&gt; _buffer = new BlockingCollection&lt;Data&gt;(new ConcurrentQueue&lt;Data&gt;()); //at the producer method: _messageBuffer.Add(new Data()); //at the consumer foreach (Data data in _buffer.GetConsumingEnumerable())//it will block here automatically waiting from new items to be added and it will not take cpu down { //handle the data here. } </code></pre>
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    1. POConcurrent collections eating too much cpu without Thread.Sleep
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    1. USJalal Said
    1. USJalal Said
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    1. POConcurrent collections eating too much cpu without Thread.Sleep
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    1. COAldeen Saa'd the event works really well thanks, what waitone does wait 1 ms ?
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    2. COyou are welcome :)
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      1. USJalal Said
    3. CO@Prix: I just notice your question now: "what waitone does wait ms ?", No; The `WaitOne` is a blocking until it _receives_ a signal. In the code: `_queueNotifier.Set();` is the signal "here indicates that new item is added" Read more on `AutoResetEvent` [here](http://msdn.microsoft.com/en-us/library/system.threading.autoresetevent.aspx).
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