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SubjectRe: [PATCH] raise tsc clocksource rating
Glauber de Oliveira Costa wrote:
> From: Glauber de Oliveira Costa <glauber@t60.localdomain>
> tsc is very good time source (when it does not have drifts, does not
> change it's frequency, i.e. when it works), so it should have its rating
> raised to a value greater than, or equal 400.
> Since it's being a tendency among paravirt clocksources to use values
> around 400, we should declare tsc as even better: So we use 500.
> This patch also touches the comments on clocksource.h, which suggests
> that 499 would be a limit on the rating values.
> Signed-off-by: Glauber de Oliveira Costa <>

Are you sure these paravirt sources don't intentionally trump the TSC?


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