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remove performance tips
not really pertinent to the oC manual, hard to maintain
This commit is contained in:
Carla Schroder
@@ -5,17 +5,12 @@ SMB/CIFS
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ownCloud can connect to Windows file servers or other SMB-compatible servers
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with the SMB/CIFS backend.
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<<<<<<< HEAD
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.. note:: The SMB/CIFS backend requires ``smbclient`` to be installed on the
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ownCloud server. This should be included in any Linux distribution.
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=======
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.. note:: The SMB/CIFS backend requires ``smbclient`` or
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the PHP smbclient module to be installed on the ownCloud server. The PHP
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smbclient module is preferred, but either will work. These
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should be included in any Linux distribution. (See `PECL smbclient
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<https://pecl.php.net/package/smbclient>`_ if your distro does not include
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them.)
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>>>>>>> 189c81a... corrections to smbclient requirements
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You need the following information:
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@@ -25,4 +25,5 @@ ownCloud Server Configuration
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performance_tuning/index
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js_css_asset_management_configuration
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automatic_configuration
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oc_server_tuning
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@@ -5,13 +5,13 @@ ownCloud Server Tuning
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Using cron to perform background jobs
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-------------------------------------
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See :doc:`../background_jobs_configuration` for a description and the
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See :doc:`background_jobs_configuration` for a description and the
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benefits.
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Enable JavaScript and CSS Asset Management
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------------------------------------------
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See :doc:`../js_css_asset_management_configuration` for a description and the
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See :doc:`js_css_asset_management_configuration` for a description and the
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benefits.
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.. _caching:
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@@ -22,4 +22,4 @@ Caching
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Caching improves performance by storing data, code, and other objects in memory.
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Memory cache configuration for the ownCloud server is no longer automatic in
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ownCloud 8.1 and up, but must be installed and configured. See
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:doc:`../caching_configuration`.
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:doc:`caching_configuration`.
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@@ -1,91 +0,0 @@
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======================
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Database Best Practice
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======================
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Currently ownCloud supports the following relational database management
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systems:
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- MySQL
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- MariaDB
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- PostgreSQL
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- SQLite
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- Oracle
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SQLite is not supported in the Enterprise edition, and is not recommended
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except for systems with very light workloads, and for testing ownCloud.
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We are using the `doctrine database abstraction layer`_ and schema evolution
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with a `MDB2 Schema`_ based table description in XML.
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.. _doctrine database abstraction layer:
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http://www.doctrine-project.org/projects/dbal.html
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.. _MDB2 Schema:
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https://raw2.github.com/pear/MDB2_Schema/master/docs/
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xml_schema_documentation.html
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Using MariaDB/MySQL instead of SQLite
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-------------------------------------
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MySQL or MariaDB are preferred because of the `performance limitations of
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SQLite with highly concurrent applications
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<http://www.sqlite.org/whentouse.html>`_, like ownCloud.
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On large instances you could consider `running MySQLTuner
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<https://github.com/major/MySQLTuner-perl/>`_ to optimize the database.
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See the section :doc:`../../configuration_database/linux_database_configuration`
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for how to configure ownCloud for MySQL or MariaDB. If your installation is
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already
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running on
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SQLite then it is possible to convert to MySQL or MariaDB using the steps
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provided in :doc:`../../configuration_database/db_conversion`.
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Improve slow performance with MySQL on Windows
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----------------------------------------------
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On Windows hosts running MySQL on the same system changing the parameter
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``dbhost`` in your ``config/config.php``
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from ``localhost`` to ``127.0.0.1`` could improve the page loading time.
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See also `this forum thread
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<https://forum.owncloud.org/viewtopic.php?f=17&t=7559>`_.
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Other performance improvements
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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MySQL: compare https://tools.percona.com/wizard to your current settings
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MariaDB: https://mariadb.com/kb/en/optimization-and-tuning/
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Postgresql
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----------
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Alternative to MariaDB/MySQL. Used in production by a few core developers.
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Requires at least Postgresql 9.0
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Other performance improvements
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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See http://wiki.postgresql.org/wiki/Performance_Optimization
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Oracle Database
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---------------
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Usage scenario: Existing enterprise installations. Only core apps are supported
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and tested. Not recommended because it involves compiling the oci8
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Other performance improvements
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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http://de.slideshare.net/cjorcl/best-practices-php-and-the-oracle-database and
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ask your DBA.
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Problems
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^^^^^^^^
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When ORA-56600 occurs (Oracle Bug 8467564) set this php.ini setting:
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`oci8.statement_cache_size=1000`, see `oracle forum discussion`_
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.. _oracle forum discussion:
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https://community.oracle.com/message/3468020#3468020
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@@ -1,20 +0,0 @@
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================================
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Server Tuning & Performance Tips
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================================
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There are a number of options to tune the ownCloud installation and enable a
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higher level of performance. This chapter gives a few hands-on tips on
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configuring your database, and LAMP stack to improve performance. This chapter
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is community-maintained and unsupported; test these tips carefully before
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deploying them on production servers.
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If you wish to add tips to this page, please put them in the relevant section.
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If there isn't an appropriate section then start a new one.
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.. toctree::
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:maxdepth: 2
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oc_server_tuning
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database_best_practice
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webserver_tips
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ssl_encryption_app
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@@ -1,41 +0,0 @@
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====================
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SSL / Encryption App
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====================
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SSL (HTTPS) and file encryption/decryption can be offloaded to a processor's
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AES-NI extension. This can both speed up these operations while lowering
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processing overhead. This requires a processor with the `AES-NI instruction set
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<http://wikipedia.org/wiki/AES_instruction_set>`_.
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Here are some examples how to check if your CPU / environment supports the
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AES-NI extension:
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* For each CPU core present: ``grep flags /proc/cpuinfo`` or as a summary for
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all cores: ``grep -m 1 ^flags /proc/cpuinfo`` If the result contains any
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``aes``, the extension is present.
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.. windows is not supported on 8.x
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.. * On Windows you can run ``coreinfo`` from Sysinternals `Windows
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.. Sysinternals
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.. Download Coreinfo
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.. <https://technet.microsoft.com/en-us/sysinternals/cc835722.aspx>`_ which
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.. gives you details of the processor and extensions present. Note: you may
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.. have
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.. to run the command shell as administrator to get an output.
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* Search eg. on the Intel web if the processor used supports the extension
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`Intel Processor Feature Filter
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<http://ark.intel.com/MySearch.aspx?AESTech=true>`_ You may set a filter by
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``"AES New Instructions"`` to get a reduced result set.
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* For versions of openssl >= 1.0.1, AES-NI does not work via an engine and
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will not show up in the ``openssl engine`` command. It is active by default
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on the supported hardware. You can check the openssl version via ``openssl
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version -a``
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* If your processor supports AES-NI but it does not show up eg via grep or
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coreinfo, it is maybe disabled in the BIOS.
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* If your environment runs virtualized, check the virtualization vendor for
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support.
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@@ -1,98 +0,0 @@
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===============
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Web server Tips
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===============
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PHP safe mode
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-------------
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PHP safe mode has to be turned off. It is deprecated and has been removed in
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newer PHP versions. Verify its status with :ref:`label-phpinfo`, and look for
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``safe_mode
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on/off``. If it is on, then add this line to ``php.ini`` to turn it off::
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safe_mode = Off
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Enable the SPDY / http_v2 protocol
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----------------------------------
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If you want to enable SPDY for Apache please note the `Known Issues
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<https://code.google.com/p/mod-spdy/wiki/KnownIssues>`_ of this module to avoid
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problems after enabling it.
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`<mod-spdy <https://code.google.com/p/mod-spdy/>`_
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Apache Tuning
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-------------
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Maximum number of Apache processes
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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An Apache process uses around 12MB of RAM. Apache should be configured so that
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the maximum number of HTTPD processes times 12MB is lower than the amount of
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RAM. Otherwise the system begins to swap and the performance goes down.
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KeepAlive should be configured with sensible defaults
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The KeepAlive directive enables persistent HTTP connections, allowing multiple
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requests to be sent over the same TCP connection. This reduces latency by as
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much as 50%. Especially in combination with the periodic checks of the sync
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client the following settings are recommended:
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::
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KeepAlive On
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KeepAliveTimeout 100
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MaxKeepAliveRequests 200
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mod_gzip
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^^^^^^^^
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``mod_gzip`` should be used because it speeds up the transfer of data and
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helps to free server memory, and HTTP connections are closed faster.
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MPM
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^^^
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Apache prefork has to be used. Don’t use threaded ``mpm`` with ``mod_php``
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because PHP is currently not thread safe.
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Hostname Lookups
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^^^^^^^^^^^^^^^^
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::
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# cat /etc/httpd/conf/httpd.conf
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...
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HostnameLookups off
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Log files
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^^^^^^^^^
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Log files should be switched off for maximum performance.
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Comment out the ``CustomLog`` directive. Keep ``ErrorLog`` to be able to track
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down errors.
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.. todo: loglevel?
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.. commented out until somebody knows what to do with it
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.. MaxKeepAliveRequests 4096
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.. ^^^^^^^^^^^^^^^^^^^^^^^^^
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.. ::
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.. <IfModule prefork.c>
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.. StartServers 100
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.. MinSpareServers 100
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.. MaxSpareServers 2000
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.. ServerLimit 6000
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.. MaxClients 6000
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.. MaxRequestsPerChild 4000
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.. </IfModule>
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.. <Directory "/var/www/html">
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.. Options Indexes SymLinksIfOwnerMatch AllowOverride All
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.. </Directory>
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