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Why MPM ITK recommended?

Discussion in 'EasyApache' started by vision1234, Sep 7, 2016.

  1. vision1234

    vision1234 Registered

    May 24, 2016
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    We operate with Cloudlinux 7.2 and configuring EA4. We often work with Shopware, which is a onlineshop software from Germany. So I read their performance guide:

    In other words, in EA I can choose between MPM Prefork and MPM Prefork + MPM ITK (module) as described in cPanel documentation:

    Now I just have a few questions:

    1) Why do you recommend to use MPM ITK when using Cloudlinux? Because in all benchmarks I found, it's much slower than MPM prefork. What is the technical reason? (not for being slower; for choosing MPM ITK)

    2) I already enabled CageFS. As I read a big plus of MPM ITK is the separating of the vhosts directly in Apache, while CageFS creates a virtualized file system and cages scripts done by apache. But is it necessary to use both techniques? How do they work together?

    3) Choosing MPM ITK, in cPanel CGI (not FastCGI) is the only available handler, right?

    4) Cause I'm using CGI instead of suPHP it's fully compatible to OPCache and APC, right?

    Thanks in advance!
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
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    The document you have referenced is now updated for EasyApache 4, and no longer includes that recommendation:

    Multi-Processing Modules - MPMs - EasyApache 4 - cPanel Documentation

    You shouldn't have to use both options, but the two are compatible based on the information at:

    CloudLinux Documentation

    Yes, that is correct. This is documented at:

    Apache Module: MPM ITK - EasyApache 4 - cPanel Documentation

    Opcode caching programs are not compatible with the suPHP or CGI PHP handlers. The caching program either does not function, or functions incorrectly. This is documented at:

    PHP Options - EasyApache 4 - cPanel Documentation

    Thank you.
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