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Subject: Re: CLOCK_REALTIME_RES and nanosecond resolution
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: tglx@linutronix.de
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
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Date: Tue, 08 Nov 2005 20:45:37 +1100
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> This is the resolution which you can expect for timers (nanosleep and
> interval timers) as the timers depend on the jiffy tick.
> 
> The resolution of the readout functions is not affected by this.

Ok, thanks, POSIX spec wasn't very clear about that 

Ben.