Jeremy Wilkins

Peter Cordes wrote on 2009-11-29:

#5

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.

Between this and the Compiz adjustment here Karmic is considerably faster.

I’ve also applied this fix for Nvidia graphics cards running Compiz, but not sure if it introduced an improvement.

Anybody with additional ideas on how to speed up Karmic with Compiz, please fire away in the comments.