Mailinglist Archive: opensuse-kernel (23 mails)

[Thomas Renninger <trenn@xxxxxxx>]

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
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