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Re: [gpsd-dev] Fwd: Re: gpsd for time sync on Ubuntu remix too hard for

From: Gary E. Miller
Subject: Re: [gpsd-dev] Fwd: Re: gpsd for time sync on Ubuntu remix too hard for normals - how to improve?
Date: Tue, 7 May 2019 18:32:05 -0700

Yo Greg!

On Tue, 07 May 2019 17:53:25 -0400
Greg Troxel <address@hidden> wrote:

> Lisandro Damián Nicanor Pérez Meyer <address@hidden> writes:
> > diff --git a/man/gpsd.xml b/man/gpsd.xml
> > index ad639819..949e07a5 100644
> > --- a/man/gpsd.xml
> > +++ b/man/gpsd.xml
> > @@ -199,7 +199,8 @@ some cellphone and handheld embedded GPSes have
> > similar behaviors. Accordingly, waiting for a watch request to open
> > the device may save battery power. (This capability is rare in
> > consumer-grade devices). You should use this option if you plan to
> > use gpsd to provide reference -clock information to ntpd through a
> > memory-shared segment. +clock information to ntpd through a
> > memory-shared segment. Be aware that +this option will keep the OS
> > from going to sleep. </para>
> >  </listitem>
> >  </varlistentry>  
> I think it's good to say something, but which OSes decide to enter
> which powersave states based on what kind of userland activity seems
> like a very broad brush.  So perhaps
>   With -n, gpsd will continue to read from a receiver and process the
>   data.  On some systems, this can prevent the system from entering
> sleep. An example is FooOS, which [MAKING STUFF UP in its default
>   configuration, detects processes using CPU time, and avoids
> sleeping in that case.]

I don't know of any OS where an actively running simple daemon does not
stop sleeping.  There are OS where a daemon can tell the OS that it
can be put to sleep, but gpsd is not smart enough to do that.

So I inclined much more to Lisandro's wording.

Maybe "will prevent" to "will likely prevent"?

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin

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