phpapcu

PHP - Does APCu use the same memory pool as defined for opcache?

According to the docs, APCu is still using the same configuration as for APC which includes defining the amount of memory to be used

apc.shm_size = 32M

But Opcache has it's own configuration for memory:

opcache.memory_consumption = "64"

Does the amount allocated to APCu come out of the total memory_consumption setting for Opcache? Or are they separate?

Solution

  • They are separate, because they are separate modules and so would not want to share memory space.

    Since APCu now is only a data-cache (something opCache cannot do), you might not need as much space for APCu either - depending on how much data is being stored.