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PORun a task in a different threads in a console application
 

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    <p>I have done quite a bit of research on this but I still can't seem to get it right. I have to generate a pdf file with 1000 pages (I use a library) and need to do this N times for different data. The data is independent of each other and I can totally generate this in parallel, which is what i'm trying to do. Ideally I would like to have this done in say 10 threads , each thread generating the pdf in memory and saving it at the end. Say it takes 15 minutes per pdf (with 1000 pages), if I do this sequentially, that would be 150 minutes for 10 pdf files vs say 30 minutes if I use 10 threads. I know people are not very fond of threading, but how can I speed it up otherwise?</p> <p>I was looking at <code>ThreadPool</code> but then I see this new <code>Task</code> in 4.0. I read that I can force each task to run in a separate thread if I use <code>TaskCreationOptions.LongRunning</code> but that does not seem to work for me. I tried to use <code>ThreadPool</code> too but since each PDF is generated from a url and for some reason, the <code>WebRequest.Create(url)</code> method seems to not execute when called from a threadpool? But I guess I would rather make the new Task library work.</p> <p>This is what I have now but it still seems to execute sequentially.</p> <pre><code>Task myTask= Task.Factory.StartNew(() =&gt; { //code for the task. //get html content //generate pdf file. } }, new CancellationToken(false), TaskCreationOptions.LongRunning, TaskScheduler.Default); myTask.Wait(); </code></pre> <p>What am I doing wrong here? if you have any suggestions, please let me know. I can't go above .net 4.0 at the moment.</p>
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    1. COHow many tasks do you create? This just starts a single new thread and then awaits the result
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    2. CODefine... "That does not seem to work for me". What is your approximate timing going sequentially vs multi-threaded?
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    3. COMay I suggest parallel.foreach ?
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