php opcahce

PHP 7 启用opcache及缓存清除

Posted by Sunday on 2018-08-01

opcache 简介

Zend opcache通过opcode缓存和优化提供更快的PHP执行过程。它将预编译的脚本文件存储在共享内存中供以后使用，从而避免了从磁盘读取代码并进行编译的时间消耗。同时，它还应用了一些代码优化模式，使得代码执行更快。（php >= 5.5）

启用opcache

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zend_extension=opcache.so
opcache.enable=1                    //启用opcache
opcache.enable_cli=1                //针对支持CLI版本PHP启动操作码缓存 一般被用来测试和调试
opcache.memory_consumption=128      //共享内存大小, 这个根据你们的需求可调
opcache.interned_strings_buffer=8   //interned string的内存大小, 也可调
opcache.max_accelerated_files=4000  //最大缓存的文件数目
opcache.validate_timestamps=1       //启用时间戳验证，配置opcache.revalidate_freq使用。设置0禁用，则必须手动重置OPcache或重新启动才能清除过期缓存
opcache.revalidate_freq=60          //60s检查一次文件更新
opcache.fast_shutdown=1             //打开快速关闭, 打开这个在PHP Request Shutdown的时候，会收内存的速度会提高
opcache.save_comments=0             //不保存文件/函数的注释

cachetool

如上设置60秒才自动清除过期缓存。这时要提交代码，不想重启php-fpm，想立即看到修改效果，可以使用cachetool清除所有opcache缓存。
https://github.com/gordalina/cachetool
CacheTool - 在CLI中管理缓存
CacheTool允许您通过cli使用apc，opcache和文件状态缓存。它将连接到fastcgi服务器（如php-fpm）并运行它的缓存。

为什么这么有用？

  • 也许你想清除字节码缓存而不重新加载php-fpm或使用web端点
  • 也许你想要一个处理缓存失效的cron
  • 也许你想直接从控制台看到一些统计数据
  • 还有很多…

兼容性

CacheTool 4.x适用于PHP> = 7.1
CacheTool 3.x适用于PHP> = 5.5.9
CacheTool 2.x适用于PHP> = 5.5.9
CacheTool 1.x适用于PHP> = 5.3.3

下载

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curl -sO http://gordalina.github.io/cachetool/downloads/cachetool.phar
chmod +x cachetool.phar

使用

CacheTool需要一个适配器才能连接，它可以是cli，fcgi和web。 fcgi适配器是最常见的，因为它直接连接到php-fpm。
您可以将IP地址或unix套接字传递给–fcgi适配器，或将其留空，CacheTool将尝试为您找到php-fpm套接字。如果找不到，则默认为127.0.0.1:9000。
您可以让CacheTool为您找到unix套接字，或默认为IP。

查看当前opcache配置

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php cachetool.phar opcache:configuration --fcgi=127.0.0.1:9000
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Zend OPcache 7.1.3
+---------------------------------------+------------+
| Directive                             | Value      |
+---------------------------------------+------------+
| opcache.enable                        | true       |
| opcache.enable_cli                    | true       |
| opcache.use_cwd                       | true       |
| opcache.validate_timestamps           | false      |
| opcache.validate_permission           | false      |
| opcache.validate_root                 | false      |
| opcache.inherited_hack                | true       |
| opcache.dups_fix                      | false      |
| opcache.revalidate_path               | false      |
| opcache.log_verbosity_level           | 1          |
| opcache.memory_consumption            | 134217728  |
| opcache.interned_strings_buffer       | 8          |
| opcache.max_accelerated_files         | 4000       |
| opcache.max_wasted_percentage         | 0.05       |
| opcache.consistency_checks            | 0          |
| opcache.force_restart_timeout         | 180        |
| opcache.revalidate_freq               | 0          |
| opcache.preferred_memory_model        | ''         |
| opcache.blacklist_filename            | ''         |
| opcache.max_file_size                 | 0          |
| opcache.error_log                     | ''         |
| opcache.protect_memory                | false      |
| opcache.save_comments                 | true       |
| opcache.fast_shutdown                 | true       |
| opcache.enable_file_override          | false      |
| opcache.optimization_level            | 2147467263 |
| opcache.lockfile_path                 | '/tmp'     |
| opcache.file_cache                    | ''         |
| opcache.file_cache_only               | false      |
| opcache.file_cache_consistency_checks | true       |
+---------------------------------------+------------+

查看opcache缓存状态

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php cachetool.phar opcache:status --fcgi=127.0.0.1:9000
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+----------------------+---------------------------------+
| Name                 | Value                           |
+----------------------+---------------------------------+
| Enabled              | Yes                             |
| Cache full           | No                              |
| Restart pending      | No                              |
| Restart in progress  | No                              |
| Memory used          | 15.13 MiB                       |
| Memory free          | 112.87 MiB                      |
| Memory wasted (%)    | 0 b (0%)                        |
+----------------------+---------------------------------+
| Cached scripts       | 754                             |
| Cached keys          | 1394                            |
| Max cached keys      | 7963                            |
| Start time           | Wed, 01 Aug 2018 03:57:43 +0000 |
| Last restart time    | Wed, 01 Aug 2018 05:49:38 +0000 |
| Oom restarts         | 0                               |
| Hash restarts        | 0                               |
| Manual restarts      | 7                               |
| Hits                 | 582                             |
| Misses               | 766                             |
| Blacklist misses (%) | 0 (0%)                          |
| Opcache hit rate     | 43.175074183976                 |
+----------------------+---------------------------------+

查看opcache缓存文件

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php cachetool.phar opcache:status:scripts --fcgi=127.0.0.1:9000
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+------+------------+---------------------------------------------------------------------------------------------------------------------------+
| Hits | Memory     | Filename                                                                                                                  |
+------+------------+---------------------------------------------------------------------------------------------------------------------------+
| 0    | 1.92 KiB   | /data/web/demo.sundayle.com/app/Repositories/Contracts/IndexRepository.php                                                 |
| 1    | 3.52 KiB   | /data/web/demo.sundayle.com/routes/admin/user.php                                                                          |
| 1    | 83.82 KiB  | /data/web/demo.sundayle.com/vendor/laravel/framework/src/Illuminate/Database/Query/Grammars/Grammar.php                    |
| 1    | 9.75 KiB   | /data/web/demo.sundayle.com/vendor/symfony/http-foundation/ServerBag.php                                                   |
+------+------------+---------------------------------------------------------------------------------------------------------------------------+

清除opcache缓存文件

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php cachetool.phar opcache:reset --fcgi=127.0.0.1:9000

查看opcache清除后效果

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php cachetool.phar opcache:status:scripts --fcgi=127.0.0.1:9000
+------+--------+----------+
| Hits | Memory | Filename |
+------+--------+----------+

帮助

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php cachetool.phar list

CacheTool 3.2.1-2-ga819a69

Usage:
  command [options] [arguments]

Options:
  -h, --help                       Display this help message
  -q, --quiet                      Do not output any message
  -V, --version                    Display this application version
      --ansi                       Force ANSI output
      --no-ansi                    Disable ANSI output
  -n, --no-interaction             Do not ask any interactive question
      --fcgi[=FCGI]                If specified, used as a connection string to FastCGI server.
      --fcgi-chroot[=FCGI-CHROOT]  If specified, used for mapping script path to chrooted FastCGI server. --tmp-dir need to be chrooted too.
      --cli                        If specified, forces adapter to cli
      --web                        If specified, forces adapter to web
      --web-path[=WEB-PATH]        If specified, used as a information for web adapter
      --web-url[=WEB-URL]          If specified, used as a information for web adapter
  -t, --tmp-dir=TMP-DIR            Temporary directory to write files to
  -v|vv|vvv, --verbose             Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:
  help                        Displays help for a command
  list                        Lists commands
  self-update                 [selfupdate] Updates cachetool.phar to the latest version
 apc
  apc:bin:dump                Get a binary dump of files and user variables
  apc:bin:load                Load a binary dump into the APC file and user variables
  apc:cache:clear             Clears APC cache (user, system or all)
  apc:cache:info              Shows APC user & system cache information
  apc:cache:info:file         Shows APC file cache information
  apc:key:delete              Deletes an APC key
  apc:key:exists              Checks if an APC key exists
  apc:key:fetch               Shows the content of an APC key
  apc:key:store               Store an APC key with given value
  apc:regexp:delete           Deletes all APC key matching a regexp
  apc:sma:info                Show APC shared memory allocation information
 apcu
  apcu:cache:clear            Clears APCu cache
  apcu:cache:info             Shows APCu user & system cache information
  apcu:cache:info:keys        Shows APCu keys cache information
  apcu:key:delete             Deletes an APCu key
  apcu:key:exists             Checks if an APCu key exists
  apcu:key:fetch              Shows the content of an APCu key
  apcu:key:store              Store an APCu key with given value
  apcu:regexp:delete          Deletes all APCu key matching a regexp
  apcu:sma:info               Show APCu shared memory allocation information
 opcache
  opcache:configuration       Get configuration information about the cache
  opcache:invalidate:scripts  Remove scripts from the opcode cache
  opcache:reset               Resets the contents of the opcode cache
  opcache:status              Show summary information about the opcode cache
  opcache:status:scripts      Show scripts in the opcode cache
 stat
  stat:clear                  Clears the file status cache, including the realpath cache
  stat:realpath_get           Show summary information of realpath cache entries
  stat:realpath_size          Display size of realpath cache

http://www.laruence.com/2015/12/04/3086.html

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