Satyadeo Kumar asked:
I am on a dedicated server – running multiple portals in respective virtual directories. Some of the previously loaded websites are using Zend opcode cache. While my new commerce portal uses an APC based cache and I have migrated this website to the new server.
I am having frequent internal server 500 errors and crashes.
I am having following config:
- PHP 5.4.27 and APC 3.1.13,
- Centos server with about 4 GB ram,
- APC is using php-fpm
Zend opcode cache config:
Opcode Caching Up and Running Optimization Enabled Startup OK Shared memory model mmap Cache hits 71322 Cache misses 1049 Used memory 13544916 Free memory 42838688 Wasted memory 10725260 Cached scripts 298 Cached keys 309 Max keys 3907
shm_size = 2024M
..and so on…
Could this be a possible reason for crashes? Do i need to disable one of them or can they run together. I am afraid disabling zend should not cause issues to other websties – so just wanted to be sure?
I can imagine what would happen if you tried to run two opcode caches simultaneously. It looks a lot like this.
So you should run one opcode cache, and one only.
And, this may surprise you, but you need to get rid of APC, and keep Zend OPcache. The reason is that APC is very, very crashy. It alone may well be the cause of your PHP crashes, as it was for me and many others.
Unless your new commerce portal is truly bizarre, it should work fine with Zend OPcache.
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