| Re: [chrony-users] Is there any timer or sleep function in linux that is not influenced by chrony? |
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- Subject: Re: [chrony-users] Is there any timer or sleep function in linux that is not influenced by chrony?
- From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
- Date: Mon, 11 Sep 2017 11:17:29 +0200
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On Tue, Sep 05, 2017 at 12:12:32PM +0800, xxhdx1985126 wrote:
> I need to make a thread sleep for some amount of time which is influenced by "chrony's speeding up the system clock", is there any way?
Linux provides the CLOCK_MONOTONIC_RAW clock, which is not influenced
by the chronyd's adjustments of the CLOCK_REALTIME/CLOCK_MONOTONIC
clock.
Unfortunately, it cannot be used in clock_nanosleep() or in a timer.
You would need to make your own timer using clock_gettime() and a busy
loop or sleep in short intervals with another clock.
--
Miroslav Lichvar
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