Trim your emails On Fri, Apr 01, 2016 at 10:16:42AM +0200, Stephane Gasparini wrote:
> > That means these delta's can be arbitrarily large, in fact the MSRs can > > have wrapped however many times. > > 64 bits is 18 446 744 073 709 551 615 > > so even assuming a 10 GHz frequency if my math are good this is more than > 58 years before the MSR wrap around, assuming the device ran always at max > freq. fair enough.. but going with 10Ghz, cpu_khz would be 10e6 ~ 33 bits, which effectively reduces the wrap/overflow time to just 31 bits, which per that frequency is just ~1/4th of a second.
