Is 'epoll' the essential reason that Tornadoweb(or Nginx) is so fast?

Posted by Mickey Shine on Stack Overflow See other posts from Stack Overflow or by Mickey Shine
Published on 2010-04-06T07:47:42Z Indexed on 2010/04/06 7:53 UTC
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Filed under:

epoll

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nginx

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apache

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tornado

Tornadoweb and Nginx are popular web servers for the moment and many benchmarkings show that they have a better performance than Apache under certain circumstances. So my question is:

Is 'epoll' the most essential reason that make them so fast? And what can I learn from that if I want to write a good socket server?

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