( ! ) Warning: session_start(): open(/var/lib/php/session/sess_eukk51t16q4q5nv7ogdop77eg5, O_RDWR) failed: No such file or directory (2) in /var/www/bitweaver/live/users/includes/bit_setup_inc.php on line 82
Call Stack
#TimeMemoryFunctionLocation
10.0001232848{main}( ).../page_history.php:0
20.0001234904require_once( '/var/www/bitweaver/live/kernel/includes/setup_inc.php' ).../page_history.php:16
30.02321909072BitSystem->scanPackages( ).../setup_inc.php:141
40.02512177352BitSystem->loadPackage( ).../BitSystem.php:1183
50.02512180384include_once( '/var/www/bitweaver/live/users/includes/bit_setup_inc.php' ).../BitSystem.php:1109
60.02552584632session_start ( ).../bit_setup_inc.php:82

( ! ) Warning: session_write_close(): open(/var/lib/php/session/sess_eukk51t16q4q5nv7ogdop77eg5, O_RDWR) failed: No such file or directory (2) in /var/www/bitweaver/live/kernel/includes/classes/BitSystem.php on line 580
Call Stack
#TimeMemoryFunctionLocation
10.0001232848{main}( ).../page_history.php:0
20.05123749528BitSystem->display( ).../page_history.php:57
30.05133750896BitSystem->preDisplay( ).../BitSystem.php:505
40.05303765504session_write_close ( ).../BitSystem.php:580

( ! ) Warning: session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in /var/www/bitweaver/live/kernel/includes/classes/BitSystem.php on line 580
Call Stack
#TimeMemoryFunctionLocation
10.0001232848{main}( ).../page_history.php:0
20.05123749528BitSystem->display( ).../page_history.php:57
30.05133750896BitSystem->preDisplay( ).../BitSystem.php:505
40.05303765504session_write_close ( ).../BitSystem.php:580
- bitweaver
{maketoc}
! bitweaver Performance Tips
These tips are particularly important for high volume sites.

!! Bitweaver Optimisation
* __every directory is scanned on every page load__. even though the overhead is not large, we recommend that you remove all unused packages from your server. you can add them back at a later time point if you need them later on.
* Beginning with version 2, we have global __liberty caching__ for any parsed content. this will dramatically reduce loading time and load on the server for such content. The setting can be found in the Aministration --> Liberty --> Liberty Settings page

!! Template Optimisation
* ((Speed optimisation))
* TemplateOptimization

! System Perfomance Tips
!! System Administration Tools
* [http://www.vanheusden.com/multitail/|MultiTail] - tail on steroids
* Make sure your [http://www.zoneedit.com/smtp.html|mail server] is working

!! Apache Settings
Make sure you have an ((Advanced Apache Configuration for High Traffic Sites))

!! PHP Optimisation
* Use [http://www.php.lt/benchmark/phpbench.php|Fast Coding Habits]
* Allocate a large chunk of memory to php in your php.ini file
* Install ImageMagick's Magickwand for better image handling
* Install pecl fileinfo for better type checking on file uploads
* Install an Accelerator
** Installation of a PHP opcode caching mechanism like [http://eaccelerator.net/HomeUk|php-eaccelerator] ( which is a maintained version of [http://turck-mmcache.sourceforge.net/|turck-mmcache] ) will dratically reduce PHP memory usage and improve execution time. It is available as a yum installable Fedora extra rpm.

!! ((dbTuning: PostgresAdvocacy|Postgres))
Install the tablefunc contribution to achieve massive optimization of GatekeeperPackage security look ups. tablefunc has the Oracle'esque "connectby" function that will let you execute recurisve queries on a hierarchical table that has id/parent_id rows, ala the tiki_fisheye_gallery_map. To install, make sure you have installed teh postgresql-contrib rpm/deb/whatever, and execute something like this FedoraCore 3 command line:
{code in="bash"}# psql foo < /usr/share/pgsql/contrib/tablefunc.sql{code}
Then to your config_inc.php, add: {code in="php}define( 'POSTGRESQL_CONTRIB', TRUE );{code}

! ToDo
!! Areas to investigate for Code Opimizations
* ADODB
** If writing code, see the [http://phplens.com/lens/adodb/docs-adodb.htm#speed|Tuning tips] and install the [http://adodb.sourceforge.net/#extension|ADODB C Extension]
Page History
Date/CommentUserIPVersion
30 Apr 2010 (07:36 UTC)
Lester Caine81.138.11.13627
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Davis178.93.252.826
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laetzer85.178.0.17024
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laetzer85.178.44.920
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laetzer141.20.125.25419
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laetzer85.178.30.7417
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laetzer85.178.30.7416
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xing194.152.164.4513
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xing194.152.164.4512
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xing194.152.164.4511
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spiderr66.57.239.24510
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spiderr66.194.217.2219
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spiderr66.194.217.2238
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spiderr66.93.240.2043
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