Re: [opensuse-kernel] TSC question for kernel developers

On Thursday 14 October 2010 09:05:56 pm Stefan Seyfried wrote:

Hi

I know it's slightly offtopic, but I guess people here might know the answer ;-)

On a modern CPU, with constant_tsc feature, how well synchronized are the TSCs Never tried it myself, but heard it detects warps rather well: http://people.redhat.com/mingo/time-warp-test/time-warp-test.c

The kernel has some boot time sync check mechanisms for some time to detect bad behaving CPUs or clustered systems with warping TSCs and falls back (hopefully with an obvious message) to hpet then. Thomas -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-kernel+help@opensuse.org