On Tue, Nov 27, 2018 at 03:36:15PM -0800, Andi Kleen wrote: > > It does seem that FREEZE_PERFMON_ON_PMI (misnamed as it is) is of > > rather limited use (or even negative, in our case) to a counter that's > > already restricted to ring 3. > > It's much faster. The PMI cost goes down dramatically.
faster doesn't mean much when its broken.
