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Example code of amadeco/module-opcache-gui

Informations about the package module-opcache-gui

OPcache GUI for Magento 2

Latest Stable Version Magento 2 PHP License

Advanced OPcache monitoring and control GUI for Magento 2, implemented with React for a responsive and modern experience (https://github.com/amnuts/opcache-gui).

Capture d’écran 2025-08-19 à 20 51 57

Features

Installation

Option 1: Composer (Recommended)

This extension uses CDN-hosted React components and doesn't require static content generation, allowing installation with the --keep-generated flag.

Option 2: Manual Installation

  1. Download or clone the repository
  2. Copy the files to app/code/Amadeco/OpcacheGui/
  3. Run the following commands:

Usage

Accessing the Dashboard

Navigate to System → React → PHP OpCache Dashboard in your Magento Admin Panel.

OPcache Optimization Guide

Recommended PHP OPcache Settings for Magento 2

Technical Tips

Tip 1: Calculate Your Required Cache Size

Set opcache.max_accelerated_files to this number plus a 25% margin, rounded to the nearest higher prime number for optimal hash table performance.

Tip 2: Implement Selective PHP Preloading

For Magento 2, selective preloading is vastly more efficient than preloading all files:

References:

Tip 3: Avoid JIT Compilation for Magento 2

JIT compilation causes segfaults with Magento 2 and provides minimal performance gains:

Reference: Magento 2 PHP 8.2 JIT Performance Analysis

Tip 4: Blacklist Non-Essential Files

Create an opcache.blacklist file to exclude test directories and rarely-used files:

Then reference it in your php.ini or pool configuration:

Tip 5: Separate CLI and Web Process Configurations

For optimal performance, maintain distinct OPcache configurations for CLI and web processes:

CLI Configuration (/etc/php/8.x/cli/php.ini):

Web Processes Configuration (/etc/php/8.x/fpm/php.ini):

Key Differences Explained:

Setting CLI Web Reason
memory_consumption 512MB 1024MB CLI needs less memory since it handles one command at a time
interned_strings_buffer 32MB 256MB Web processes handle more unique strings from templates
validate_timestamps On Off CLI tools need to see file changes immediately
file_cache_only On Off CLI benefits from file-based cache for persistence
max_accelerated_files 30000 120000 CLI uses fewer files than web processes
log_verbosity_level 3 2 More detailed logging helps with CLI debugging

Tip 6: PHP-FPM Pool Partitioning for Frontend and Admin

Split your PHP-FPM configuration into separate pools for frontend and admin:

Then configure NGINX to route requests accordingly:

Benefits:

Configuration Location Matters

OPcache memory settings must be configured in php.ini rather than in PHP-FPM pool configuration files:

  1. Initialization Order: OPcache initializes early in PHP's startup process, before pool configurations are processed

  2. Shared Memory Allocation: Settings like memory_consumption define system-level allocations that must be consistent across PHP-FPM pools

  3. Global vs. Pool-specific Settings: Some directives only work when set globally in php.ini

Credits

License

MIT License

All versions of module-opcache-gui with dependencies

PHP Build Version
Package Version
Requires amnuts/opcache-gui Version ^3.6
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