> how about a new scheduler option...CFS is hard to tune and has a really
> bad performance on my multithread embedded apps(>10% cpu usage
> increase,etc), the same app ran perfectly well with the O1 scheduler in
> the past for years.
Google is having the same problem with some of their apps, which is why they have ported the old scheduler over to the 2.6 series. I'm not sure if they have a kernel tree with that publicly available, though.