On Tue, 2007-09-25 at 11:47 +0200, Ingo Molnar wrote:
> Maybe there's more to come: if we can get CONFIG_FAIR_USER_SCHED to work
> properly then your Xorg will have a load-independent 50% of CPU time all
> to itself. (Group scheduling is quite impressive already: i can log in
> as root without feeling _any_ effect from a perpetual 'hackbench 100'
> running as uid mingo. Fork bombs no more.) Will the Amarok gforce plugin
> like that CPU time splitup? (or is most of the gforce overhead under
> your user uid?)
>
> it could also work out negatively, _sometimes_ X does not like being too
> high prio. (weird as that might be.) So we'll see.
I piddled around with fair users this morning, and it worked well. With
Xorg and Gforce as one user (X and Gforce are synchronous ATM), and a
make -j30 as another, I could barely tell the make was running.
Watching a dvd, I couldn't tell. Latencies were pretty darn good
throughout three hours of testing this and that.
-Mike
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