Opcache Control Panel

Details Files Reset Recheck Refresh
memory
64M
111Mfree
-49349120-74%used
111Kwasted
keys
16K
15K96%free
5873%scripts
0wasted
hits
70K
69K98%hits
7551%misses
0blacklist
restarts
1
1manual
0keys
0memory

general

Hostrettungsgesellschaft-dresden.de
PHP VersionPHP 8.3.28 fpm-fcgi Linux
Opcache VersionZend OPcache 8.3.28
Uptime1 day and 23 hours
Last Restart11 hours ago

memory

Used Memory-49349120
Free Memory111M
Wasted Memory113744
Current Wasted Percentage0.2

statistics

Num Cached Scripts587
Num Cached Keys587
Max Cached Keys16229
Hits70813
Oom Restarts0
Hash Restarts0
Manual Restarts1
Misses755
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate98.9

functions

opcache_reset
opcache_get_status
opcache_compile_file
opcache_invalidate
opcache_get_configuration
opcache_is_script_cached

optimization levels

PassDescription
1Constants subexpressions elimination (CSE) true, false, null, etc.
Optimize series of ADD_STRING / ADD_CHAR
Convert CAST(IS_BOOL,x) into BOOL(x)
Convert INIT_FCALL_BY_NAME + DO_FCALL_BY_NAME into DO_FCALL
2Convert constant operands to expected types
Convert conditional JMP with constant operands
Optimize static BRK and CONT
3Convert $a = $a + expr into $a += expr
Convert $a++ into ++$a
Optimize series of JMP
4PRINT and ECHO optimization (defunct)
5Block Optimization - most expensive pass
Performs many different optimization patterns based on control flow graph (CFG)
9Optimize register allocation (allows re-usage of temporary variables)
10Remove NOPs
directives guide | functions guide | wiki.php.net | pecl | Zend source | OCP latest