Hi, I have a question about cgroup v2's `cpu.max` value. The documentation (https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#cpu-interface-files) says: > cpu.max > > A read-write two value file which exists on non-root cgroups. The default is “max 100000”. > > The maximum bandwidth limit. It’s in the following format: > > $MAX $PERIOD > > which indicates that the group may consume upto $MAX in each $PERIOD duration. “max” for $MAX indicates no limit. If only one number is written, $MAX is updated. > "the group may consume upto $MAX in each $PERIOD duration". But $MAX what? Microseconds? Clock cycles? Arbitrary CPU scheduling units with only a relative meaning? Elephants? At the moment I don't know what values are sensible to set here. I found the scheduler docs (https://www.kernel.org/doc/html/latest/scheduler/sched-bwc.html#management) which describe what sounds like might be a similar mechanism but for cgroup v1 - is this the same (in which case $MAX would in fact be measured in microseconds)? Unless I'm missing something, I think the documentation should be updated to include the answer. Thanks, Patrick Reader (I hope this is an appropriate forum to ask in - please direct me elsewhere if necessary).
