Hello all,

I'm trying to get TSC via rdtscp() instruction in kata containers.

But, the value of TSC is different from that of host TSC. In runc container, I have the same TSC. My cpus are intel core and the codes are following:

unsigned long long hi, lo;
__asm__ __volatile__ ("rdtscp" : "=a"(lo), "=d"(hi));
unsigned long long tsc = lo | hi<<32;

As far as I know, the reason why is due to TSC virtualization, such as TSC offsetting, in VMM. Is this right? and the same method is applied in kata containers?

If so, is there a way to get the same host TSC from the kata containers? or disable TSC offset?