136 lines
4.7 KiB
Markdown
136 lines
4.7 KiB
Markdown
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How to: improve performance
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==============
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* [Home](help)
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A little guide to increase the performance of a Friendica site
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**At first**
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Feel free to ask at Friendica support at https://helpers.pyxis.uberspace.de/profile/helpers if you need some clarification about the following instructions or if you need help in any 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. 50 is a value that doesn't influences image quality too much.
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Set "OStatus conversation completion interval" to "never".
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If you have many OStatus contacts then completing of conversations can be very time wasting. The downside: You won't see every comment in OStatus threads.
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Set "Path for lock file" to an empty folder outside your web root.
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Lock files help avoid the possibility of several background processes running at the same time.
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For example: It can happen that the poller.php takes longer than expected. When there is no lock file, it is possible for several instances of poller.php to run at the same time - which would slow down the system and affect the maximum numbers of processes and database connections.
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Please define a full file path that is writeable by the web server process. If your site is located at "/var/www/sitename/htdocs/" you could maybe 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 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 is a time wasting process that also makes heave use of the CPU.
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You can use the same folder you used for the lock file.
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**Warning!**
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The folder for item cache is cleaned up regularly. Every file that exceeds the cache duration is deleted. **If you accidentally point the cache path to your web root then you will delete your web root!**
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So double check that the folder only contains temporary content that can 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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**Description**
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This plugin reduces the database load massively. Downside: You can't see the total number of pages available at each module, and have this replaced with "older" and "newer" links.
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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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###rendertime
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This plugin doesn't speed up your system. It helps analyzing your bottlenecks.
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When enabled you see some values like the following at the bottom of 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 show your performance problems.
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Webserver
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--------
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If you are using Apache please enable the following modules.
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**Cache-Control**
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This module tells the client to cache the content of static files so 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 configuration in the "directory" context.
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ExpiresActive on ExpiresDefault "access plus 1 week"
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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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This module compresses the traffic between the web server 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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When using apache think about using FCGI. When using a Debian based distribution you will need the packages named "php5-cgi" and "libapache2-mod-fcgid".
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Please refer to external documentations for a more detailed explanation how to set up a system based upon FCGI.
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**APC**
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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 between different requests. This helps speeding up the page creation time.
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**Database**
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There are scripts like [tuning-primer.sh](http://www.day32.com/MySQL/) and [mysqltuner.pl](http://mysqltuner.pl) that analyzes your database server and give hints on values that could be changed.
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Please enable the slow query log. This helps being aware of performance problems.
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