> > > The ref cycles always tick at their frequency, or slower when the system > > is idling. That means the NMI watchdog can never expire too early, > > unlike with cycles. > > > Just make the period longer, like 30% longer. Take the max turbo factor you > can > get and use that. It is okay if it takes longer of machine with > smaller max Turbo ratios.
That would be a ticking time bomb. Turbo ratios are likely to grow. There's no architectural way to get a turbo factor. Even if there is a model specific MSR it would likely not work in virtualization etc. You could make the timeout ridiculously large, but even that would have a small chance of failure. -Andi
