At hyper scale you don't need to worry about sharing as much because the important services are far bigger than one machine. That sidesteps the problem: you can

At hyper scale you don't need to worry about sharing as much because the important services are far bigger than one machine. That sidesteps the problem: you can apply whatever sysctls or configs you need to do before starting the container. "Multitenancy" here means "I have a giant pool of machines and I run a bunch of jobs across them" not "I have a pool of giant machines and I stack jobs on them".