Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
95M74%free
33M25%used
0wasted
keys
128K
127K99%free
580scripts
275wasted
hits
1444
59040%hits
85459%misses
0blacklist
restarts
4466
4466manual
0keys
0memory

general

HostVM-146-191-ubuntu
PHP VersionPHP 7.1.21 fpm-fcgi Linux
Opcache VersionZend OPcache 7.1.21
Uptime7 years and 15 hours
Last Restart7 minutes ago

memory

Used Memory32.9M
Free Memory95.1M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts580
Num Cached Keys855
Max Cached Keys130987
Hits590
Oom Restarts0
Hash Restarts0
Manual Restarts4466
Misses854
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate40.9

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
directives guide | functions guide | wiki.php.net | pecl | Zend source | OCP latest