Hello Susan Romero,
Hope you are well. Thanks for writing to us. For a Download Manager setup experiencing high-volume download issues with PHP-FPM, you can try these specific recommendations to improve performance and prevent lockups:
Here’s a comprehensive guide to optimize PHP-FPM for WordPress Download Manager (WPDM) during high-volume downloads:
1. First, Backup Your Configuration:
sudo cp /etc/php-fpm.d/www.conf /etc/php-fpm.d/www.conf.backup
2. Locate Your PHP-FPM Configuration File:
– For Debian/Ubuntu:/etc/php/8.x/fpm/pool.d/www.conf
– For CentOS/RHEL: /etc/php-fpm.d/www.conf
(Replace 8.x with your PHP version)`
3.Edit PHP-FPM Pool Configuration:
sudo nano /etc/php-fpm.d/www.conf
4. Add/Modify These Settings in http://www.conf
; Process Manager Configuration
pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 35
pm.max_requests = 500
; Memory Settings
php_admin_value[memory_limit] = 256M
php_admin_value[max_execution_time] = 300
; Timeout Settings
request_terminate_timeout = 300s
; Slow Log Configuration
slowlog = /var/log/php-fpm/slow.log
request_slowlog_timeout = 10s
5. Configure OPcache in php.ini
Find and edit your php.ini:
opcache.enable=1
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
6. Additional Performance Improvements
– Install and configure a caching plugin
– Use Redis or Memcached
– Implement a CDN for large files
– Consider using nginx over Apache
7. After Making Changes, Restart PHP-FPM
# For Ubuntu/Debian
sudo systemctl restart php8.x-fpm
# For CentOS/RHEL
sudo systemctl restart php-fpm
8. Monitor Performance
# Monitor PHP-FPM processes
htop
# Check PHP-FPM status
systemctl status php8.x-fpm
# Monitor error log
tail -f /var/log/php-fpm/error.log
9. Fine-Tuning Notes
– Adjust pm.max_children based on your server’s RAM
– Formula: max_children = (Total RAM – Reserved RAM) / Max PHP process size
– Monitor server resources and adjust values accordingly
– Keep an eye on the slow log for potential bottlenecks
Remember to:
– Test in a staging environment first
– Make one change at a time
– Monitor the impact of each change
– Keep backups of all configuration files
Please kindly check and let me know.
Thank you and kind regards
