Opcache, storing cached files longer

[iso99]

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?

 

[NiteWave]

please try php suExec daemon mode:
lsws webadmin -> Server -> External App -> lsphp5 -> Run On Start Up: suEXEC Daemon

 

[iso99]

I believe I've done that already, opcache is already working.
But is it good to store the files in memory longer, and how to proceed with that?

 

[NiteWave]

can you provide more info regarding
1)about how long cache flushes itself, and how to know it ?
2)increase force_restart_timeout to a bigger value, any help ?