Comment 5 for bug 436342

Revision history for this message
Peter Cordes (peter-cordes) wrote :

Markus, and anyone else wondering about interactive performance regressions, NEW_FAIR_SLEEPERS is modifiable at run time; just run

echo NEW_FAIR_SLEEPERS | sudo tee /sys/kernel/debug/sched_features

grep --color=tty NEW_FAIR_SLEEPERS /sys/kernel/debug/sched_features

(Ubuntu mounts linux's debugfs at /sys/kernel/debug, not at /debug like you see referenced on the lkml threads talking about this.)

 To enable for every reboot, put
echo NEW_FAIR_SLEEPERS > /sys/kernel/debug/sched_features
 in /etc/rc.local, or whatever.