Re: Performance overhead of get_cycles_sync

Andi Kleen
2007-12-11T17:23:55Z

Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org> writes:

> the TSC clocksource (and hence the vsyscall code) is turned off on
> systems that fail the TOD/CLOCK portion of this test:

Which is not on core2 which was the question about. And if it was
turned off it wouldn't use get_cycles_sync() at all.

-Andi