Opcache Control Panel

Details Files Reset Recheck Refresh
memory
384M
341M88%free
43M11%used
0wasted
keys
128K
125K97%free
17551%scripts
1070wasted
hits
2M
2M99%hits
1767misses
0blacklist
restarts
47
47manual
0keys
0memory

general

Hostli940-124.members.linode.com
PHP VersionPHP 7.1.16 fpm-fcgi Linux
Opcache VersionZend OPcache 7.1.16
Uptime6 months and 9 hours
Last Restart1 day ago

memory

Used Memory43.1M
Free Memory340.9M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts1755
Num Cached Keys2825
Max Cached Keys130987
Hits2.1M
Oom Restarts0
Hash Restarts0
Manual Restarts47
Misses1767
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate99.9

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