Peter, I just realized that we moved away sysctl tunabled to debugfs in next. We have seen several cases where it was benefitial to set sched_migration_cost_ns to a lower value. For example with KVM I can easily get 50% more transactions with 50000 instead of 500000. Until now it was possible to use tuned or /etc/sysctl.conf to set these things permanently. Given that some people do not want to have debugfs mounted all the time I would consider this a regression. The sysctl tunable was always available. I am ok with the "informational" things being in debugfs, but not the tunables. So how do we proceed here? Christian
