Disable or Remove APC

alternative-php-cache

I am too frustrated with PHP APC caching system and I wanted to remove/disable it completely from my server. I am using PHP with Nginx installed on Debian Squeeze, is there any way of doing it ?

Best Answer

Instead of removing APC, which will cause a massive performance hit, and effectively shoot yourself in the foot..

Try this: in /etc/php5/conf.d/apc.ini:

extension=apc.so
apc.shm_size=128M
apc.shm_segments=1
apc.max_file_size=5M
apc.num_files_hint=10000
apc.slam_defense = 0
apc.write_lock=1

You can increase apc.shm_size to a value bigger than 128, say 512 if you had sufficient free RAM.

I did this on a server I run, and never ever see Unable to allocate memory for pool errors.

Related Solutions

Enable APC User Cache on certain sites only (Apache)

This kind of usage asks for memcache. Go get memcache, read the documentation at http://memcached.org.

APC strange long responses

Found it..

It was because of apc.mmap_file_mask set into "straight file-backed mmap" like said oficial APC doc. Since server setup is multithreaded and apc was stored in fysical file, it was stucking by the reason of locked file.

Its very important to set it into shared memory.

So now my apc.ini is:

apc.gc_ttl="600"
apc.cache_by_default="1"
apc.filters = "apc\.php$,apc_clear\.php$"
apc.canonicalize="0"
apc.mmap_file_mask=/apc.shm.XXXXXX
apc.enable_cli="0"
apc.max_file_size = 5M
apc.report_autofilter="0"
apc.include_once_override="0"

apc.stat="0"

Best Answer

Related Solutions

Enable APC User Cache on certain sites only (Apache)

APC strange long responses

Related Topic