For a personal experience: I remember that until systemd 21x (212? 213?) whatever core dump you got was cut off at around 700Mb (arbitrarily chosen by systemd developers due to journald limitations, a bug was left open without comments for 2 years, another person was essentially told that was the limit we're sorry [1], until a big customer of RH was hit by it maybe). Obviously preventing systemd from "intercepting" core dumps was (and it is still, IIRC) black magic. That made for some head scratching moments in our early RHEL7 installs.
For a less politically correct one: http://suckless.org/sucks/systemd
For a personal experience: I remember that until systemd 21x (212? 213?) whatever core dump you got was cut off at around 700Mb (arbitrarily chosen by systemd developers due to journald limitations, a bug was left open without comments for 2 years, another person was essentially told that was the limit we're sorry [1], until a big customer of RH was hit by it maybe). Obviously preventing systemd from "intercepting" core dumps was (and it is still, IIRC) black magic. That made for some head scratching moments in our early RHEL7 installs.
[1] https://bugs.freedesktop.org/show_bug.cgi?id=55613, https://bugs.freedesktop.org/show_bug.cgi?id=59623, https://cgit.freedesktop.org/systemd/systemd/commit/?id=34c1...