Adjusting child processes for PHP-FPM (Nginx)
When setting these options consider the following:
- How long is your average request?
- What is the maximum number of simultaneous visitors the site(s) get?
- How much memory on average does each child process consume?
Determine if the max_children limit has been reached.
sudo grep max_children /var/log/php?.?-fpm.log.1 /var/log/php?.?-fpm.log