On Wed, Mar 30, 2022 at 01:41:18AM +0300, Vladimir Oltean wrote:
> I think your comparison between NTP and PTP is a bit flawed because they
> serve different purposes, PTP being there for 'precise' synchronization
> rather than following the time of day.
I don't think they are that different. But
Hi Miroslav,
On Tue, Mar 29, 2022 at 09:10:59AM +0200, Miroslav Lichvar wrote:
> On Fri, Mar 25, 2022 at 02:45:04AM +0200, Vladimir Oltean wrote:
> > In general, we all seem to agree that the initial PTP time is largely
> > irrelevant until you start looking at it for some particular reason
> > (d
> In the Master I didn't use phc2sys in my first tests,
> and I was getting -300ms latency values between
> the two setups.
That is a different issue than first described. I was referring to the
problem of the date from the master being set to 2018 rather than the
current date.
I do not remember
On Fri, Mar 25, 2022 at 02:45:04AM +0200, Vladimir Oltean wrote:
> In general, we all seem to agree that the initial PTP time is largely
> irrelevant until you start looking at it for some particular reason
> (debugging). Or at least, almost everyone seems to agree. I remember
> Miroslav Lichvar ar
> -Original Message-
> From: Vladimir Oltean
> Sent: Thursday, March 24, 2022 6:13 PM
> To: Keller, Jacob E
> Cc: ch...@chriscaudle.org; linuxptp-users@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
>
> On Fr
On Sat, Mar 26, 2022 at 10:25:43AM +, Federico Murciano wrote:
> Do you have concrete instrucctions that I could try in master and
> slave in order to correct this? Do you think it is possible that due
> to the setups where I just plug in the device to electricity and
> other setup that is plu
p-users] phc2sys not synchr. to right time and date
> I can also see in the Master devices this difference in its clocks:
> from 32 seconds to 31 in the RTC time:
> I did hwclock -w and still get this values
None of that has anything to do with the PTP hardware clock (PHC) in the
network cont
acob E
> > > Cc: ch...@chriscaudle.org; linuxptp-users@lists.sourceforge.net
> > > Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
> > >
> > > On Fri, Mar 25, 2022 at 12:27:53AM +, Keller, Jacob E wrote:
> > > > > (
t; > Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
> >
> > On Fri, Mar 25, 2022 at 12:27:53AM +, Keller, Jacob E wrote:
> > > > (there might be other reasons why his setup is working, but)
> > > > Some kernel Ethernet drivers have a
> -Original Message-
> From: Vladimir Oltean
> Sent: Thursday, March 24, 2022 5:45 PM
> To: Keller, Jacob E
> Cc: ch...@chriscaudle.org; linuxptp-users@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
>
> On Fr
On Fri, Mar 25, 2022 at 12:27:53AM +, Keller, Jacob E wrote:
> > (there might be other reasons why his setup is working, but)
> > Some kernel Ethernet drivers have a bad habit of writing the current
> > (UTC) system time (derived from the battery-backed RTC) into the PHC
> > current (TAI) time
> -Original Message-
> From: Vladimir Oltean
> Sent: Thursday, March 24, 2022 11:10 AM
> To: ch...@chriscaudle.org
> Cc: linuxptp-users@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
>
> On Thu, Mar 24, 2022 at
> -Original Message-
> From: Federico Murciano
> Sent: Thursday, March 24, 2022 3:02 AM
> To: Keller, Jacob E ; linuxptp-
> us...@lists.sourceforge.net
> Cc: Sebastian Peters
> Subject: AW: phc2sys not synchr. to right time and date
>
> Hi Jacob,
>
> Thank you for your answer. That i
> I can also see in the Master devices this difference in its clocks:
> from 32 seconds to 31 in the RTC time:
> I did hwclock -w and still get this values
None of that has anything to do with the PTP hardware clock (PHC) in the
network controller.
The system clock runs on the system processor, th
;
Gesendet: Mittwoch, 23. März 2022 18:33
An: linuxptp-users@lists.sourceforge.net
Betreff: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
> From: Federico Murciano
> Subject: [Linuxptp-users] phc2sys not synchr. to right time and date
> Message-ID: <1648054395763.43...
ctor: Prof. Dr. Dr. h.c. Sahin Albayrak
Von: Vladimir Oltean
Gesendet: Donnerstag, 24. März 2022 19:09
An: ch...@chriscaudle.org
Cc: linuxptp-users@lists.sourceforge.net
Betreff: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
On Thu, Mar 24,
On Thu, Mar 24, 2022 at 09:14:08AM -0500, Chris Caudle wrote:
> On Thu, March 24, 2022 5:02 am,
> linuxptp-users-requ...@lists.sourceforge.net wrote:
> > From: Federico Murciano
> > Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and
> > date
> >
On Thu, March 24, 2022 5:02 am,
linuxptp-users-requ...@lists.sourceforge.net wrote:
> From: Federico Murciano
> Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and
> date
> Message-ID: <1648115598945.22...@dai-labor.de>
> Thank you for your answer. Yes
ano
> Sent: Wednesday, March 23, 2022 10:13 AM
> To: linuxptp-users@lists.sourceforge.net
> Cc: Sebastian Peters
> Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
>
> edge2@dai-edge2:~$ timedatectl
>
>Local time: Mon 2018-01-29 2
;
Gesendet: Mittwoch, 23. März 2022 18:33
An: linuxptp-users@lists.sourceforge.net
Betreff: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
> From: Federico Murciano
> Subject: [Linuxptp-users] phc2sys not synchr. to right time and date
> Message-ID: <1648054395763.43...
> From: Federico Murciano
> Subject: [Linuxptp-users] phc2sys not synchr. to right time and date
> Message-ID: <1648054395763.43...@dai-labor.de>
> sudo phc2sys -s enp0s31f6 -O 0 -m
That is on the slave computer?
What is the phc2sys options and output messages on the maste
> -Original Message-
> From: Federico Murciano
> Sent: Wednesday, March 23, 2022 10:13 AM
> To: linuxptp-users@lists.sourceforge.net
> Cc: Sebastian Peters
> Subject: Re: [Linuxptp-users] phc2sys not synchr. to right time and date
>
> edge2@
yrak
Von: Federico Murciano
Gesendet: Mittwoch, 23. März 2022 17:53
An: linuxptp-users@lists.sourceforge.net
Cc: Sebastian Peters
Betreff: [Linuxptp-users] phc2sys not synchr. to right time and date
Hello everyone,
I am trying to sync different Ubuntu computers to the ptp ma
Hello everyone,
I am trying to sync different Ubuntu computers to the ptp master clock from
another device connected to each of them.
The setup is very easy:
Ubuntu Laptop as Slave <-> Ubuntu device with GPS signal as Master
The problem is that for one system, everything is working right, b
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