On Wed, May 24, Konrad Rzeszutek Wilk wrote: > How can that be determined? As in how can the guest (domU) be within > the range? Is there some way to determine that? Is there some > matrix of the various OS-es that can tolerate this?
Just cycle through all dom0s and look for the cpu_khz values: # xl dmesg | grep -w MHz (XEN) Detected 2494.018 MHz processor. What I have seen are ranges up to 200khz, even if /proc/cpuinfo says "2.50GHz" . Some dom0s calibrated themselves to exactly 2500.000 MHz, they do not need a tolerance. The expected frequency of a given domU can be seen in 'dump softtsc stats' (s). How various guest kernels deal with the slightly different frequency, no idea. Olaf
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