/usr/lib/tuned/optimize-serial-console
Edit: /usr/lib/tuned/optimize-serial-console/tuned.conf (239B)
#
# tuned configuration
#
# This tuned configuration optimizes for serial console performance at the
# expense of reduced debug information to the console.
[main]
summary=Optimize for serial console use.
[sysctl]
kernel.printk="4 4 1 7"