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Re: ublox zed-f9p - need to power cycle?

From: Andreas B
Subject: Re: ublox zed-f9p - need to power cycle?
Date: Mon, 22 Nov 2021 14:14:23 +0100

Hi David,

I'm on a ""rolling release"" basically.
I update now and then to bleeding edge. I've never used old versions
of gpsd on this unit.

Now I'm using:

$ gpsd -V
gpsd: 3.23.2~dev (revision release-3.23.1-153-gb0c897ac3)

When it comes to memory and CPU use, I don't really know. I did not
pay any attention to it until you mentioned it now.
It _should_ be OK. The RPi is just running gpsd and a light version of
nginx - so no heavy lifting at all.

Interesting point about the number of 'seen' being steady while 'used' is not.

Best regards,

On Mon, Nov 22, 2021 at 12:46 PM David Taylor <> wrote:
> On 22/11/2021 08:51, Andreas B wrote:
> > Hi all,
> >
> > By the end of October I noticed that the number of used satellites dropped 
> > down.
> > This trend of low number of used sats continued until last week (~19.
> > Nov), when I power cycled my raspi.
> >
> > After this reboot the number of sats used was back at the
> > 'normal/pre-late-October' (i.e. good) level.
> > See plots. There is a distinct drop towards the end of october, and
> > this trend continues until the reboot last week.
> >
> > What would be the cause of this?
> > Outdated almanac?
> > Is it wise to do a power cycle every now and then, or is it necessary?
> >
> > Best regards,
> > Andreas
> Andreas,
> I've had a ZED-F9P running since mid-September connected to U-blox U-Center
> 21.05 and the number of satellites seems the same as ever.  The fact that your
> "seen"plot seems steady suggests to me that the Almanac is OK.
> What version of GPSD are you using?  Any other indications on the RPi - memory
> used, CPU used?  disk free?
> Cheers,
> David
> --
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