I notice that that the cache flushes itself more frequently that I thought. I was thinking of how to store the cache for a longer period? I'm not sure what options to change. Currently, I have: opcache.force_restart_timeout = 180 opcache.revalidate_freq = 60 Is changing them to higher values advisable? Also, I'm using this box for shared hosting and memory model is mmap. Is SHM better or more memory hog?