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| The PHP engine runs the MediaWiki source code. However, rather than using the conventional PHP engine, this configuration will use Facebook’s HHVM for significantly higher performance. Follow these instructions to set up the HHVM package:
| | First, install HHVM: |
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| * '''Debian/Ubuntu''': https://docs.hhvm.com/hhvm/installation/linux
| | https://www.digitalocean.com/community/tutorials/how-to-install-hhvm-with-nginx-on-ubuntu-14-04 |
| * '''RHEL/CentOS''': https://github.com/facebook/hhvm/wiki/Prebuilt-Packages-on-Centos-7.x
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| {{Note|Make sure you've installed [[Nginx/MediaWiki|Nginx]] from the official nginx repos, rather than your distribution's outdated versions. On both Debian and CentOS, this will result in the creation of an nginx user and group, which will be necessary as shown below.}}
| | https://www.howtoforge.com/tutorial/how-to-install-wordpress-with-hhvm-and-nginx-on-centos-7/ |
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| {{Note|According to the build instructions, HHVM only compiles and runs on 64-bit CPUs only.}}
| | For better performance, set up HHVM as a UNIX socket to reduce additional load from TCP layers. |
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| First, edit the HHVM configuration file, and in line 7, replace the server port line with the following to activate the UNIX socket:
| | https://docs.hhvm.com/hhvm/advanced-usage/fastCGI#using-fastcgi |
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| {{hc|/etc/hhvm/server.ini|<nowiki>
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| ;hhvm.server.port = 9000
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| hhvm.server.user = nginx
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| hhvm.server.file_socket = /var/run/hhvm/hhvm.sock
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| </nowiki>}}
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| == Systemd Service == | | == Systemd Service == |
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| Then, create a customized Systemd configuration file for HHVM, which will provide Nginx with the ability to read and write to the UNIX socket:
| | Make sure you've installed Nginx from the official nginx repos, rather than your distribution's outdated versions. On both Debian and CentOS, this will result in the creation of an nginx user and group, which is then made accessible in the systemd service below: |
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| {{hc|/etc/systemd/system/hhvm.service|<nowiki> | | {{hc|/etc/systemd/system/hhvm.service|<nowiki> |
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| WantedBy=multi-user.target | | WantedBy=multi-user.target |
| </nowiki>}} | | </nowiki>}} |
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| Now, reload the systemd services. You only need to do this whenever you edit the systemd service files.
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| sudo systemctl daemon-reload
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| Finally, start HHVM.
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| sudo systemctl start hhvm
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| If it works out, enable the hhvm service.
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| sudo systemctl enable hhvm
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| == Sources ==
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| * [https://docs.hhvm.com/hhvm/advanced-usage/fastCGI#using-fastcgi FastCGI UNIX Socket]
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