The realpath_cache_size setting in modern PHP versions is correct

[javiereguiluz]

In https://symfony.com/doc/current/performance.html#configure-the-php-realpath-cache we say:

By default, PHP sets a realpath_cache_size of 16K which is too low for Symfony. Consider updating this value at least to 4096K.

Today I read this: https://tideways.io/profiler/blog/how-does-the-php-realpath-cache-work-and-how-to-configure-it

PHP 7.2 sets realpath_cache_size to 4096K by default ... This change was also backported to PHP 7.0 and PHP 7.1 patch releases in January.

[xabbuh]

This seems to be true: https://3v4l.org/H0B6i

[xabbuh]

But, I am not sure if it's worth it to update the docs now given that we still have supported Symfony versions that have to work with PHP 5.x.

[weaverryan]

We can at least remove the recommendation from master (so, Symfony 4)

[javiereguiluz]

In #9216 a reword is proposed to not mention if this is a default PHP value or not ... just that you need to use at least those values.

[javiereguiluz]

Fixed by #9216.