APC setting – maximum apc.shm_size

alternative-php-cacheconfigurationmaximummemory

Is there any limitation of the apc.shm_size? As i calculated im gonna need more or less 2 GB cache size, but if i set even 1 MB more then 1024MB, Apache wont start.

Best Answer

2 GB cache seems a bit excessive, but if that's what you need then that's what you need. make sure your system has enough memory as far as I know apc doesn't have any limitation in that regards, what does your apache log says when you try to start it and it won't start?

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APC configuration on Ubuntu 10.4. Problem with apc.shm_size, apc.shm_segments and Apache

try this config and see if it works:

extension=apc.so

apc.enabled=1                  
apc.stat=1

apc.shm_segments=1                  
apc.shm_size=256M                  
apc.ttl=7200                        
apc.user_ttl=7200                  
apc.num_files_hint=10000
apc.max_file_size=5M            
apc.mmap_file_mask=/dev/zero
apc.enable_cli=1

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.

Best Answer

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APC configuration on Ubuntu 10.4. Problem with apc.shm_size, apc.shm_segments and Apache

Enable APC User Cache on certain sites only (Apache)

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