I have a number of Magento sites running on Amazon and I have to turn off APC or I will get blank pages in the Magento Admin area. It only happens in admin.
Does anyone else have APC issues with Magento Admin?
Is there a work around for this?
php -v PHP 5.4.45 (cli) (built: Sep 11 2015 21:23:18) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies
APC version 3.1.15-dev
Just an interesting update: We received an error this morning from a Nexcess server
When these show up, it is very often an issue with apc opcode caching. Sometimes, for as yet unknown reasons, magento with not play nice with this php feature. some compiled php code will get saved in it, but the next time that part of the code is needed, what is cached is not compatible and the php process dies.
To test this after getting random errors at various parts of the checkout process, I restarted php-fpm, which clears out the apc opcode cache, and I stopped getting the errors. But since it looks like this was also restarted last night, the issues will likely return if this was the cause. I can disable apc opcode caching for your setup, which will very likely clear this up. Would you like me to disable apc opcode caching in php?