I'm trying to set my real-time priority to unlimited on my CentOS 7 (CentOS Linux release 7.9.2009 (Core)) image running in Docker.
I'm executing (as root):
ulimit -r unlimited
I'm receiving the following error:
bash: ulimit: real-time priority: cannot modify limit: Operation not permitted
I pulled the centos 7 container from https://hub.docker.com/_/centos.
When executing ulimit -a, I'm met with
core file size (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 514022
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1048576
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) unlimited
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Is setting the real-time priority to something other than zero even feasible in the docker container?
