Php7.4 opcache.preload - Errors on fpm start
Try to put your opcachePreload.php inside for example /var/www/html and change opcache.preload to,Is the opcache.preload interpreted as some sort of relative path instead of absolute? (I've tried opcache.preload = ./opcachePreload.php),I'm upgrading to php7.4 and want to take advantage of the new opcache preloading., Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers
Try to put your
opcachePreload.php inside for example
/var/www/html and change
opcache.preload = /var/www / html / opcachePreload.php
I tried it . but there is a error: when I restart the php-fpm:,This is the problem with the use of opcache.preload and the coexistence of several applications on the same server...,The first one with a default autoloading generated by the framework (It will be necessary to benchmark precisely which classes it is appropriate to add.).,Note that I don't know if the performance would be better if all the mentioned classes were preloaded
see phpMv / ubiquity #88
Configuring preloading involves two steps, and requires that the opcache be enabled. First, set the opcache.preload value in php.ini: , OPcache Functions ,Because include will execute code, nested included files will also be parsed and their declarations preloaded., In the preload.php script, any file referenced by include, include_once, require, require_once, or opcache_compile_file() will be parsed into persistent memory. In the following example, all .php files in the src directory will be preloaded, unless they are a Test file.
opcache.preload = preload.php
To enable opcache preloading, you must tell PHP where this file is stored in its php.ini configuration file.,If you are using a custom PHP-FPM Pool, change the opcache.preload_user.,For multiple PHP Apps, we could just (theoretically) create a new PHP-FPM Pool with its own user and opcache.preload script defined.,At the end of the preload script, you can add and ignore files:
At the end of the preload script, you can add and ignore files:
< ? php $clpPreloader = new ClpPreloader(); $clpPreloader - > setDebug(false); $clpPreloader - > paths(realpath(__DIR__. '/src')); $clpPreloader - > paths(realpath(__DIR__. '/vendor')); $clpPreloader - > ignore(realpath(__DIR__. '/vendor/twig/twig')); $clpPreloader - > preload();
Since Symfony 4.4 and greater versions support OPCache Preloading out of the box, enabling in theory requires defining two configuration values in your php.ini file:,Initially I ran into some trouble of not having the generated preload file in place since I was clearing caches using the dev environment, instead of prod. Once this was in place I ran into another issue, with the system reporting a segfault in the FPM log (/var/log/php7.4-fpm.log):,Here is the chart comparing the throughput of the demo installation with PHP 7.3 and 7.4:, Ibexa Commerce Digitalize and automate the way you do business
Since Symfony 4.4 and greater versions support OPCache Preloading out of the box, enabling in theory requires defining two configuration values in your php.ini file:
opcache.preload_user = www - data opcache.preload = /var/www / ezplatform / var / cache / prod / srcApp_KernelProdContainer.preload.php
You provide a preload script and link to it in your php.ini file using opcache.preload ,Every PHP file you want to be preloaded should be passed to opcache_compile_file() or be required once, from within the preload script,Here's how you'd link to this script in php.ini:,Hang on though, there's a caveat! In order for files to be preloaded, their dependencies — interfaces, traits and parent classes — must also be preloaded.
Here's how you'd link to this script in php.ini:
opcache.preload = /path/to / project / preload.php
© original article, if there is any error or correction, please contact [email protected],Feng Hengzhi on What are the basic but relatively easy-to-use image processing frameworks (especially the image deformation function) of webgl,In the case of large frame and multi file preloading, the preheating process of traversing files added to opcache needs to consume CPU resources, which is necessary and short-lived.,Springboot retrieves the configuration file parameters
The whole thing is to open it. Configure the script file and set the user. First, you need to modify the configuration file php.ini
[opcache] zend_extension = opcache.so Opcache.Enable = 1ා enable opcache Opcache.Enable ? Cli = 1 ? Enable opcode caching only for the CLI version of PHP.It is usually used for testing and debugging. Opcache.Preload = preload.phpා preload script path Opcache.Preload﹐ user = web﹐ preload user.For security reasons, root is prohibited
Keep in mind that preloaded files remain cached in OPCache memory forever. If you change the source code of any preloaded file, you'll need to restart the web server or changes won't have any effect.,On production servers, the code of your PHP files does not change between requests, so the parsing and compiling result can be reused. That's what the OPCache does (OPCache = "opcodes cache"), improving the overall performance between 2 and 15 times.,You can use this generated file as the value of the opcache.preload PHP directive:,If you are already running PHP 7.4, please test this feature in your real projects and report the performance improvement. Or even better, publish a blog post with the details and we'll feature it in the next A Week of Symfony post.
disable cache expiry check until php-fpm restarts, Its not a good not a idea to Same Compiler code for every Dynamic Php request unlike fastcgi cache its dynamic its has to expiry otherwise we get errors. (ex wordpress admin dashboard).,sudo phpenmod opcache,enable : sudo phpenmod opcache,Opcache storing precompiled script bytecode in shared memory,
zend_extension = opcache.so; opcache.enable = 1; opcache.memory_consumption = 32; opcache.interned_strings_buffer = 8; opcache.max_accelerated_files = 3000; opcache.revalidate_freq = 180; opcache.fast_shutdown = 0; opcache.enable_cli = 0; opcache.revalidate_path = 0; opcache.validate_timestamps = 1; opcache.max_file_size = 0; opcache.file_cache = /kunden/homepages / mein - pfad / htdocs / .opcache; opcache.file_cache_only = 1;
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