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PO
 

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    <p>It will shock you, but <a href="https://stackoverflow.com/a/19564538/1083704">you do not need any threads for I/O</a> (quantitatively, this means 0 threads). It is good that you have studied that multithreading does not multiply your network bandwidth. Now, it is time to know that <strong>threads do computation. They are not doing the (high-latency) communication. The communication is performed by a network adapter, which is another process</strong>, running really in parallel with with CPU. <strong>It is stupid to allocate a thread</strong> (see <a href="https://stackoverflow.com/a/19563599/1083704">which resources allocated are listed by this gentlemen who claims that you need 1 thread</a>) <strong>just to sleep until network adapter finishes its job</strong>. You need no threads for I/O = you need 0 threads. </p> <p>It makes sense to allocate the threads for computation to make in parallel with I/O request(s). The amount of threads will depend on the <a href="https://www.google.ee/search?q=communication-to-computation%20ratio" rel="nofollow noreferrer">computation-to-communication ratio</a> and <a href="https://stackoverflow.com/a/19564174/1083704">limited by the number of cores in your CPU</a>.</p> <p>Sorry, I had to say that despite you have certainly implied the commitment to blocking I/O, so many people do not understand this basic thing. Take <a href="https://stackoverflow.com/a/19564538/1083704">the advise, use asynchronous I/O</a> and you'll see that the issue does not exist.</p>
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    1. POHow to determine optimal number of threads for high latency network requests?
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    1. POHow to determine optimal number of threads for high latency network requests?
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    1. COThat's correct. The only problem is that one requires to build a framework on top of NIO2.
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      1. USAndrey Chaschev
    2. CO@AndreyChaschev I see. Building a framewrok on top of Actors is another thing. It does not require to build a framework on top of the Actors. Can I tell this?
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    3. COWell, it's opinionated topic. And my opinion is that threads are more intuitive for this type of job. And actors are green, lightweight threads.
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      1. USAndrey Chaschev
 

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