Started seeing more fatal errors (see below) regarding memory exhausted after recently upgrading moodle and php. Currently using php memory_limit of 512mb which I thought was on the high end.
We are at a slow time of the year so I am was concerned this may become a larger issue in the fall when the load is 5-10x more. We also have a number of courses >1GB.
Our environment is windows2008/IIS7.5/php7.1 64bit and similar separate server with mysql, which is also used for sessions. We recently upgraded from php5.6->7.1 and moodle 3.1->3.3
The error logs mention session\manager.php and session\database.php so I thought it might be related to sessions, which I get the impression Moodle suggests using redis > disk > database .
Would anyone recommend switching sessions storage to File or just making the memory_limit larger first? Is there any potential downside of raising this memory limit value to 1G? Any downside to using File over Database for session storage?
Thanks
====fatal php errors======
PHP Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 20480 bytes) in \cache\stores\static\lib.php on
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
20480 bytes) in \cache\stores\static\lib.php on line 261
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
40960 bytes) in \lib\classes\session\manager.php on line 530
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
28672 bytes) in \lib\classes\session\database.php on line
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
262144 bytes) in \m23\lib\classes\component.php on line 1040
Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
262144 bytes) in Unknown on line 0
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
20480 bytes) in \cache\stores\static\lib.php on line 261
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
40960 bytes) in \lib\classes\session\manager.php on line 530
PHP Fatal error:
Allowed memory size of 536870912 bytes exhausted (tried to allocate
28672 bytes) in \lib\classes\session\database.php on line
