Why all my files are not cached with apc op code?

Question

I'm using APC (3.1.9) and Zend Framework, however, only a bunch of file are being cached (something like 10 / 400).

Do you have any ideas? I'm using the factory options on a debian installation.

EDIT: It looks like the only file which are opcached are the one I manually call with require ''; however the ones which are loaded by my autoloader are not. Any ideas?

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Runtime Settings

apc.cache_by_default    1
apc.canonicalize    1
apc.coredump_unmap  0
apc.enable_cli  0
apc.enabled 1
apc.file_md5    0
apc.file_update_protection  2
apc.filters 
apc.gc_ttl  3600
apc.include_once_override   0
apc.lazy_classes    0
apc.lazy_functions  0
apc.max_file_size   1M
apc.mmap_file_mask  
apc.num_files_hint  1000
apc.preload_path    
apc.report_autofilter   1
apc.rfc1867 0
apc.rfc1867_freq    0
apc.rfc1867_name    APC_UPLOAD_PROGRESS
apc.rfc1867_prefix  upload_
apc.rfc1867_ttl 3600
apc.serializer  default
apc.shm_segments    1
apc.shm_size    32M
apc.slam_defense    1
apc.stat    1
apc.stat_ctime  0
apc.ttl 0
apc.use_request_time    1
apc.user_entries_hint   4096
apc.user_ttl    0
apc.write_lock  1

---

here is apc.php screenshots

The files that are getting opcached

And the index.php (ZF) where I require files and register autoloader within Zend_Loader_Autoloader.

Answer 1

Probably one of the biggest downside to autoloading is that op cache doesn't cache autoloaded files as one would hope (something about autoload being runtime vs. include/require being compile time. Or not. I dont claim to understand it.). Read more here.

While I never tried, I wonder if manually adding your autoloaded file to the cache by calling apc_compile_file() in the autoloader would, effectively, solve this issue?