Opcache Control Panel

Details Files Reset Recheck Refresh
memory
256M
232M90%free
24M9%used
242Kwasted
keys
16K
15K97%free
2461%scripts
1921%wasted
hits
19K
18K98%hits
2521%misses
0blacklist
restarts
15
15manual
0keys
0memory

general

Hostwo
PHP VersionPHP 7.2.34-18+ubuntu18.04.1+deb.sury.org+1 fpm-fcgi Linux
Opcache VersionZend OPcache 7.2.34-18+ubuntu18.04.1+deb.sury.org+1
Uptime2 weeks and 19 hours
Last Restart1 day ago

memory

Used Memory24.2M
Free Memory231.6M
Wasted Memory247760
Current Wasted Percentage0.1

statistics

Num Cached Scripts246
Num Cached Keys438
Max Cached Keys16229
Hits18848
Oom Restarts0
Hash Restarts0
Manual Restarts15
Misses252
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate98.7

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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