PHP加速插件－opcache參數(shù)詳解

PHP加速插件－opcache參數(shù)詳解

zend_extension=opcache.so    #這樣去加擴(kuò)展

opcache.memory_consumption=128      #為opcache分配多少共享內(nèi)存128M

opcache.interned_strings_buffer=8   #interned string的內(nèi)存大小

opcache.max_accelerated_files=4000  #最大緩存的文件數(shù)目

opcache.revalidate_freq=300         #opcache自動檢測文件是否更新的周期，單位秒

opcache.fast_shutdown=1             ##如果啟用,快速關(guān)閉序列用于加速代碼

opcache.enable_cli=1                #是否在CLI（即命令行時(shí)）啟用opcache   1啟用

; Determines if Zend OPCache is enabled

;opcache.enable=0     #是否啟用opcache  1啟用

; Determines if Zend OPCache is enabled for the CLI version of PHP

;opcache.enable_cli=0    #是否在CLI（即命令行時(shí)）啟用opcache   1啟用

; The OPcache shared memory storage size.

;opcache.memory_consumption=64    #為opcache分配多少共享內(nèi)存，單位M

; The amount of memory for interned strings in Mbytes.

;opcache.interned_strings_buffer=4    #interned string的內(nèi)存大小

; The maximum number of keys (scripts) in the OPcache hash table.

; Only numbers between 200 and 100000 are allowed.

;opcache.max_accelerated_files=2000    #最大緩存的文件數(shù)目。實(shí)際上這個(gè)值會使用第一個(gè)大于你配置的數(shù)字的下列素?cái)?shù){ 223, 463, 983, 1979, 3907, 7963, 16229, 32531, 65407, 130987 }，如你將該值指定為400，則實(shí)際上該值為463.

; The maximum percentage of "wasted" memory until a restart is scheduled.

;opcache.max_wasted_percentage=5    #

; When this directive is enabled, the OPcache appends the current working

; directory to the script key, thus eliminating possible collisions between

; files with the same name (basename). Disabling the directive improves

; performance, but may break existing applications.

;opcache.use_cwd=1    #如果置為1，則將當(dāng)前路徑加入到文件key中，以避免可能產(chǎn)生的同文件名的文件key沖突

; When disabled, you must reset the OPcache manually or restart the

; webserver for changes to the filesystem to take effect.

;opcache.validate_timestamps=1    #如果置為1，則OPCACHE會自動檢測文件的時(shí)間戳（檢測周期為revalidate_freq),并根據(jù)文件的時(shí)間戳來更新opcode,如果置為0，則只能手動去重啟opcache或重啟webserver以使更新后的php文件生效

; How often (in seconds) to check file timestamps for changes to the shared

; memory storage allocation. ("1" means validate once per second, but only

; once per request. "0" means always validate)

;opcache.revalidate_freq=2   #opcache自動檢測文件是否更新的周期，單位秒。如果是0，則每次請求時(shí)opcache都要進(jìn)行檢測。當(dāng)validate_timestamps為0時(shí)，本指令無效。

; Enables or disables file search in include_path optimization

;opcache.revalidate_path=0    #

; If disabled, all PHPDoc comments are dropped from the code to reduce the

; size of the optimized code.

;opcache.save_comments=1    #是否禁用文件中的注釋

; If disabled, PHPDoc comments are not loaded from SHM, so "Doc Comments"

; may be always stored (save_comments=1), but not loaded by applications

; that don't need them anyway.

;opcache.load_comments=1    #如果禁用，注釋不會被加載，就是不禁用，注釋也不會被應(yīng)用程序加載

; If enabled, a fast shutdown sequence is used for the accelerated code

;opcache.fast_shutdown=0     #如果啟用,快速關(guān)閉序列用于加速代碼

; Allow file existence override (file_exists, etc.) performance feature.

;opcache.enable_file_override=0   #允許文件存在覆蓋(file_exists等)性能特性。

; A bitmask, where each bit enables or disables the appropriate OPcache

; passes

;opcache.optimization_level=0xffffffff    #位掩碼,每一位啟用或禁用相應(yīng)的OPcache

;opcache.inherited_hack=1

;opcache.dups_fix=0       #為解決“cannot redecllare class" 時(shí)，可將其置為1

; The location of the OPcache blacklist file (wildcards allowed).

; Each OPcache blacklist file is a text file that holds the names of files

; that should not be accelerated. The file format is to add each filename

; to a new line. The filename may be a full path or just a file prefix

; (i.e., /var/www/x  blacklists all the files and directories in /var/www

; that start with 'x'). Line starting with a ; are ignored (comments).

;opcache.blacklist_filename=     #黑名單文件設(shè)置

; Allows exclusion of large files from being cached. By default all files

; are cached.

;opcache.max_file_size=0   #允許排除大文件緩存。在默認(rèn)情況下所有文件緩存。

; Check the cache checksum each N requests.

; The default value of "0" means that the checks are disabled.

;opcache.consistency_checks=0    #每N個(gè)請求檢查緩存校驗(yàn)，默認(rèn)值“0”意味著檢查禁用。開啟檢查有損性能，所以僅在調(diào)試時(shí)開啟

; How long to wait (in seconds) for a scheduled restart to begin if the cache

; is not being accessed.

;opcache.force_restart_timeout=180    #緩存中沒有被訪問多長時(shí)間(以秒為單位)調(diào)度重啟。

; OPcache error_log file name. Empty string assumes "stderr".

;opcache.error_log=    #留空表示標(biāo)準(zhǔn)錯誤輸出

; All OPcache errors go to the Web server log.

; By default, only fatal errors (level 0) or errors (level 1) are logged.

; You can also enable warnings (level 2), info messages (level 3) or

; debug messages (level 4).

;opcache.log_verbosity_level=1   #所有OPcache錯誤導(dǎo)向Web服務(wù)器日志。默認(rèn)情況下,只有致命錯誤(0級)或錯誤(1級)被記錄。你也可以啟用警告(要求等級2),信息消息(3級)或調(diào)試消息(四級)。

; Preferred Shared Memory back-end. Leave empty and let the system decide.

;opcache.preferred_memory_model=    #首選的共享內(nèi)存的后端。留空,讓系統(tǒng)決定。

; Protect the shared memory from unexpected writing during script execution.

; Useful for internal debugging only.

;opcache.protect_memory=0    #在腳本執(zhí)行期間保護(hù)的共享內(nèi)存被意外寫入。僅供內(nèi)部調(diào)試。