Documentation was transferred to the wiki: https://github.com/friendica/friendica/wiki/How-to:-improve-performance
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Michael Vogel
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A little guide to increase the performance of a friendica site
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**************************************************************
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At first
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========
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Feel freee to ask the friendica support at
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<https://helpers.pyxis.uberspace.de/profile/helpers> if you need some
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clarification about the following instruction or if you need help in any
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other way.
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System configuration
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====================
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Please go to /admin/site/ on your system and change the following values:
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* Set "JPEG image quality" to 50.
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This value reduces the data that is send from the server to the client.
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50 is a value that doesn't influences image qualitity too much.
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* Set "OStatus conversation completion interval" to "never".
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if you are having many OStatus contacts then completing of conversations
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can be very time wasting. The downside: You won't see any answer in
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OStatus conversations.
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* Set "Path for lock file" to an empty folder outside your web root.
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Lock files help avoiding the situation that several background processes
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run at the same time.
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For example: It can happen the the poller.php is working longer than
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expected. When there would be no lock file than maybe several instances
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of poller.php would run at the same time - which would slow down the
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systen and would affect the maximum numbers of processes and database
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conenctions.
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Please define a full file path that is writeable by the web server
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process. If your site would be located at "/var/www/sitename/htdocs/"
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you maybe could create a folder "/var/www/sitename/temp/".
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* Enable "Use MySQL full text engine"
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When using MyISAM (default) this speeds up the search.
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* Set "Path to item cache" to an empty value outside your web root.
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Parsed BBCode and some external images will be put there. Parsing BBCode
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is a timewasting process that also uses much CPU speed.
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You can use the same folder like you used for the lock file.
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---------
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!Warning!
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---------
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The folder for the item cache is cleaned up regularly. Every file that
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exceedes the cache duration is deleted. If you accidently would point
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the cache path to your web root then you would delete your webroot!
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So ensure twice that the folder only contains temporary content that can
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be deleted at any time.
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You have been warned.
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P.S. It happened to me :)
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Plugins
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=======
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Active the following plugins:
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* Alternate Pagination
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* Privacy Image Cache
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* rendertime
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Alternate Pagination
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--------------------
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Description:
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This plugin reduces the database load massively. Downside: You can't see
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anymore the number of pages.
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Administration:
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Go to the admin settings of "altpager" and set it to "global".
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Privacy Image Cache
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-------------------
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Description:
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This plugin is prefetching external content and stores it into the
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cache. Besides speeding up the page rendering it is also good for
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keeping the privacy of your users, since embedded pictures would be
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loaded from your site and not from a foreign site (that could spy on the
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IP addresses).
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Additionally it helps with content from external sites that are having a
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slow performance or that are aren't online all the time.
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Administration:
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Please create a folder named "privacy_image_cache" and "photo" in
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your web root. If these folders exists then the cached files will be
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stored there. This has the great advantage that your webserver will
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fetch the files directly from there.
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rendertime
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----------
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This plugin doesn't speed up your system. It helps analysing your
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bottlenecks.
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When enabled you see some values like the following at the bottom of
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every page:
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Performance: Database: 0.244, Network: 0.002, Rendering: 0.044, Parser: 0.001, I/O: 0.021, Other: 0.237, Total: 0.548
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* Database: This is the time for all database queries
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* Network: Time that is needed to fetch content from external sites
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* Rendering: Time for theme rendering
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* Parser: The time that the BBCode parser needed to create the output
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* I/O: Time for local file access
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* Others: Everything else :)
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* Total: The sum of all above values
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These values are showing your performance problems.
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Webserver
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=========
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If you are using apache pease enable the following modules.
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Cache-Control
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-------------
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This module tells the client to cache the content of static files so
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that they aren't fetched with every request.
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Enable the module "mod_expires" by typing in "a2enmod expires" as root.
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Please add the following lines to your site config in the "directory"
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context.
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<IfModule mod_expires.c>
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ExpiresActive on
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ExpiresDefault "access plus 1 week"
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</IfModule>
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See also: http://httpd.apache.org/docs/2.2/mod/mod_expires.html
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Compress content
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----------------
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This module compresses the traffic between the webserver and the client.
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Enable the module "mod_deflate" by typing in "a2enmod deflate" as root.
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See also: http://httpd.apache.org/docs/2.2/mod/mod_deflate.html
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PHP
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===
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FCGI
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----
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When using apache think about using FCGI. When using a Debian based
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distribution you will need the packages named "php5-cgi" and "
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libapache2-mod-fcgid".
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Please refer to external documentations for a more detaillied
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explanation how to set up a system based upon FCGI.
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APC
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---
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APC is an opcode cache. It speeds up the processing of PHP code.
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When APC is enabled, friendica uses it to store configuration data
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between different requests. This helps speeding up the page creation
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time.
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Database
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========
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There are scripts like tuning-primer.sh <http://www.day32.com/MySQL/>
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and mysqltuner.pl <http://mysqltuner.pl> that analyse your database
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server and that are giving hints on values that could be changed.
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Please enable the slow query log. This helps being aware of performance
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problems.
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