Xdebug performance in Docker after PHP/8.3 upgrade

[kAlvaro]

If someone else is using Symfony 5.4 LTS under Docker, did you need to do any tweak or arrangement regarding Xdebug after upgrading from PHP/8.2 to PHP/8.3?

I understand that having Xdebug enabled (even if not actually debugging) will make things slower (that's expected) but there's been a major change for me after upgrading to PHP/8.3 and latest Xdebug version. In PHP/8.2, it doesn't really make a lot of a difference (at worse, a 30% increase in execution time, typically way less). In PHP/8.3 it's an average 300% increase in execution time if the Xdebug extension is loaded.

Everything's native here (Ubuntu all the way through), no emulation is involved.