ULE/sched issues on stable/9 - why isn't preemption occuring?

[Ryan Stone]

On Thu, May 31, 2012 at 8:33 AM, Andriy Gapon <avg at freebsd.org> wrote:
> In this vein it might make sense to enable KTR and KTR_SCHED in GENERIC.

KTR_SCHED comes with a performance hit.  Besides, with the DTrace
sched provider that I committed this month (and MFC'ed yesterday) you
can collect schedgraph data with a D script.