Am Donnerstag 10 September 2009 schrieb Ingo Molnar: > * Martin Steigerwald wrote: > > Am Donnerstag 10 September 2009 schrieb Ingo Molnar: > > > * Martin Steigerwald wrote: > > > > Am Mittwoch 09 September 2009 schrieb Peter Zijlstra: > > > > > On Wed, 2009-09-09 at 12:05 +0300, Nikos Chantziaras wrote: > > > > > > Thank you for mentioning min_granularity. After: > > > > > > > > > > > > echo 10000000 > /proc/sys/kernel/sched_latency_ns > > > > > > echo 2000000 > /proc/sys/kernel/sched_min_granularity_ns > > > > > > > > > > You might also want to do: > > > > > > > > > > echo 2000000 > > > > > > /proc/sys/kernel/sched_wakeup_granularity_ns > > > > > > > > > > That affects when a newly woken task will preempt an already > > > > > running task. > > > > > > > > Heh that scheduler thing again... and unfortunately Col appearing > > > > to feel hurt while I am think that Ingo is honest on his offer on > > > > collaboration... > > > > > > > > While it makes fun playing with that numbers and indeed > > > > experiencing subjectively a more fluid deskopt how about just a > > > > > > > > echo "This is a f* desktop!" > /proc/sys/kernel/sched_workload > > > > > > No need to do that, that's supposed to be the default :-) The knobs > > > are really just there to help us make it even more so - i.e. you > > > dont need to tune them. But it really relies on people helping us > > > out and tell us which combinations work best ... > > > > Well currently I have: > > > > shambhala:/proc/sys/kernel> grep "" sched_latency_ns > > sched_min_granularity_ns sched_wakeup_granularity_ns > > sched_latency_ns:100000 > > sched_min_granularity_ns:200000 > > sched_wakeup_granularity_ns:0 > > > > And this give me *a completely different* desktop experience. > > what is /debug/sched_features - is NO_NEW_FAIR_SLEEPERS set? If not > set yet then try it: > > echo NO_NEW_FAIR_SLEEPERS > /debug/sched_features > > that too might make things more fluid. Hmmm, need to mount that first. But not today, cause I have to dig out on how to do it. Have to pack some things for tomorrow. And then sleep time. Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7