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SubjectRe: [patch 20/23] add /proc/sys/kernel/timeout_granularity
On Fri, 29 Sep 2006 23:58:39 -0000
Thomas Gleixner <tglx@linutronix.de> wrote:
> From: Ingo Molnar <mingo@elte.hu>
>
> Introduce timeout granularity: process timer wheel timers every
> timeout_granularity jiffies. Defaults to 1 (process timers HZ times
> per second - most finegrained).
>
> ...
>
> + timeout_granularity=
> + [KNL]
> + Timeout granularity: process timer wheel timers every
> + timeout_granularity jiffies. Defaults to 1 (process
> + timers HZ times per second - most finegrained).
> +

Please do not expose HZ to userspace in this fashion. It means that an
application which was developed and tested on a 1000Hz kernel might fail on a
250Hz kernel.

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