Hi,

I've tried to create a new User Group 'Demo' and new access level on my website on 14 Apr. Some articles, menu and modules are assigned to the new access level. The website started to have frequent memory error when a user login or logout (CB login module) at both Frontend and Backend. Suspecting that the problem is due to the new user group, I deleted the user group and the new access level as well. But the problem persists.

I set the Joomla Debug System on, and check the memory usage at each page. The login or logout sometimes exceeds 200MB to 300MB at the frontend. Login to the Admin backend uses 199MB! Other pages use much less memory. 'Something' has triggered this high memory usage with the CB Login/Logout module. When I checked my localhost memory usage, it never exceeds 50MB.

The php.ini memory limit used to be 256MB. My host support has helped to increase it to 384MB. Occasionally, when user logout, it's still giving problem.

I noticed that a user has logged a similar issue at your forum. Here's the link www.joomlapolis.com/forum/87-presales/193593-deciding-about-cb-error
This user has also created a new user group etc, and then the memory issue surfaced. But there is no problem identified and no solution given.

I've submitted a support ticket, and was asked to also post my issue in this forum. Hope I can get the necessary help to find out the cause and fix the issue.

Thanks.

Error log when it first occurred on 14 Apr, when a new user group was created:
[14-Apr-2012 12:27:29] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 30720 bytes) in <span>/</span>home<span>/</span>skin/public_html/administrator/components/com_comprofiler/comprofiler.class.php on line 1980
[14-Apr-2012 12:36:27] PHP Warning: is_file() [<a href='function.is-file'>function.is-file</a>]: open_basedir restriction in effect. File(<span>/</span>home<span>/</span>skin/public_html/libraries/joomla/log/logger.php) is not within the allowed path(s): () in <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php on line 141
[14-Apr-2012 12:36:27] PHP Warning: is_file() [<a href='function.is-file'>function.is-file</a>]: open_basedir restriction in effect. File(<span>/</span>home<span>/</span>skin/public_html/libraries/joomla/log/logexception.php) is not within the allowed path(s): () in <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php on line 215
[14-Apr-2012 12:36:27] PHP Fatal error: Uncaught exception 'RuntimeException' with message 'DirectoryIterator::__construct() [<a href='directoryiterator.--construct'>directoryiterator.--construct</a>]: open_basedir restriction in effect. File(<span>/</span>home<span>/</span>skin/public_html/libraries/joomla/log/loggers) is not within the allowed path(s): ()' in <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php:60
Stack trace:
#0 <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php(60): DirectoryIterator->__construct('<span>/</span>home<span>/</span>skin/publ...')
#1 <span>/</span>home<span>/</span>skin/public_html/libraries/joomla/log/log.php(16): JLoader::discover('JLogger', '<span>/</span>home<span>/</span>skin/publ...')
#2 <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php(273): include('<span>/</span>home<span>/</span>skin/publ...')
#3 [internal function]: JLoader::_autoload('JLog')
#4 <span>/</span>home<span>/</span>skin/public_html/libraries/joomla/error/error.php(352): spl_autoload_call('JLog')
#5 <span>/</span>home<span>/</span>skin/public_html/includes/framework.php(43): JError::setErrorHandling(8, 'message')
#6 <span>/</span>home<span>/</span>skin/public_html/index.php(21): require_once('<span>/</span>home<span>/</span>skin/publ...')
#7 {main}
thrown in <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php on line 60
[14-Apr-2012 12:51:07] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 16384 bytes) in <span>/</span>home<span>/</span>skin/public_html/libraries/loader.php on line 191
[14-Apr-2012 12:51:38] PHP Warning: file_exists() [<a href='function.file-exists'>function.file-exists</a>]: open_basedir restriction in effect. File(<span>/</span>home<span>/</span>skin/public_html/libraries/joomla/application/application.php) is not within the allowed path(s): (
abstract class JFactory

Thanks for your response.

My Current Versions:
CB 1.8
Joomla 2.5.4

I perceived this is a problem resulted from CB because the error message first captured was related to CB. --> [14-Apr-2012 12:27:29] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 30720 bytes) in /home/skin/public_html/administrator/components/com_comprofiler/comprofiler.class.php on line 1980.
And configuration of new user group was what I did at that time.

As you suggested, I've disabled most of the non-CB plugins and components. The memory leakage is still happening. As the memory limit was increased to 384MB, the error log no longer output any PHP error/warning. But, I am still directed to 503 Service Unavailable error page intermittently when accessing frontend or backend. The memory usage can still go up beyond 200MB for simple pages loaded.

I've already given the necessary info to CB support through the support ticket.

Hi,

Just to update the issue is resolved. It is caused by the security settings (open_basedir and Mod_security) that was turned on at host end (the site is using LiteSpeed webserver).

After the settings were turned off, the memory issue and the error messages are gone.