It happens on my production machines that there is so much logs that journalctl "freezes" the production webservers (by eating all IO). Yup, I'm logging a lot (~4GB compressed per 3-4 hours).
As my servers should earn money first and in free time do some logging, I would like to change the priority of journald (nice and ionice).
Why low priority for journal is not set by default in Debian? (for me it looks reasonable for all configurations) Are there any problems with such configuration? What is the best way to change the priority in Debian?