Opcache Control Panel

Details Files Reset Recheck Refresh
memory
256M
198M77%free
58M22%used
1144wasted
keys
128K
126K98%free
1117scripts
1001wasted
hits
10M
10M99%hits
3036misses
0blacklist
restarts
4
4manual
0keys
0memory

general

Hostlocalhost.localdomain
PHP VersionPHP 7.2.13 fpm-fcgi Linux
Opcache VersionZend OPcache 7.2.13
Uptime4 months and 23 hours
Last Restart9 days ago

memory

Used Memory58.5M
Free Memory197.5M
Wasted Memory1144
Current Wasted Percentage0

statistics

Num Cached Scripts1117
Num Cached Keys2118
Max Cached Keys130987
Hits9.6M
Oom Restarts0
Hash Restarts0
Manual Restarts4
Misses3036
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate100

functions

opcache_reset
opcache_invalidate
opcache_compile_file
opcache_is_script_cached
opcache_get_configuration
opcache_get_status

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
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