On 28/01/2016 19:53, Roman Kagan wrote: >> > Still, the drift that I get on my machine is really excessive, and I >> > should look into it more. Marcelo, does it ring a bell? Any reason why >> > get_kernel_ns() would be more precise than kvmclock? The computer has >> > been up only for about 25 hours. > Are you running an ntp client on the host by chance? > > get_kernel_ns() goes through timekeeper, and it may have slightly > different idea of the tsc rate than tsc_khz calculated early at boot. I get the same result both with and without chrony running (though in one case the actual tsc_khz is greater than the initial measurement, and in the other case it is smaller). Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
