linux-kernel - Re: nanosleep() uses CLOCK_MONOTONIC, should be CLOCK

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Message-ID: <cfd18e0f0806240127y105d759aye6b60715e74b823@mail.gmail.com>
Date:	Tue, 24 Jun 2008 10:27:28 +0200
From:	"Michael Kerrisk" <mtk.manpages@...glemail.com>
To:	"Bart Van Assche" <bart.vanassche@...il.com>
Cc:	"Roman Zippel" <zippel@...ux-m68k.org>,
	"Michael Kerrisk" <mtk.manpages@...il.com>,
	lkml <linux-kernel@...r.kernel.org>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"john stultz" <johnstul@...ibm.com>, "Ingo Molnar" <mingo@...e.hu>
Subject: Re: nanosleep() uses CLOCK_MONOTONIC, should be CLOCK_REALTIME?

On Tue, Jun 24, 2008 at 10:01 AM, Bart Van Assche
<bart.vanassche@...il.com> wrote:
> On Tue, Jun 24, 2008 at 7:39 AM, Michael Kerrisk
> <mtk.manpages@...glemail.com> wrote:
>> I'll add some text (not quite sure what yet) in the nanosleep() man
>> page on this point.
>
> You could e.g. mention that nanosleep() is neither affected by the
> settimeofday() system call

Thanks.  Yes, that follows fairly naturally from the statement about
clock_settime().

> nor by adjtimex() (this last one is used by
> ntpd).

That surprised me a little.  So gradual adjustments to the time made
by adjtime() / adjtimex() really don't affect nanosleep()?

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
man-pages online: http://www.kernel.org/doc/man-pages/online_pages.html
Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html
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