Hi Miroslav, No unfortunately I am not able to find another PTP master to try it out. But I stumbled across this article: https://github.com/ptpd/ptpd/issues/15 It seems like older version of PTP4l might have this issue. The latest version that my distro (CentOS 7) has is version 2.0.2 and I am
On Wed, Jul 20, 2022 at 04:37:55PM +, Keller, Jacob E wrote:
> Right that's what I was afraid of: its basically just the same as software
> timestamping.
Actually it is way worse than SW timestamping.
WiFi has collisions. Many of them.
Multicast frames have zero priority and are *not*
> -Original Message-
> From: Miroslav Lichvar
> Sent: Wednesday, July 20, 2022 1:04 AM
> To: Richard Cochran
> Cc: Keller, Jacob E ; linuxptp-
> us...@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] Adding software-transmit
> (SOF_TIMESTAMPING_TX_SOFTWARE) capability to driver
>
wrote:
>
>
> > 20.07.2022 15:23 Miroslav Lichvar write:
> >
> >
> > On Wed, Jul 20, 2022 at 03:12:39PM +0200, Jakub Raczyński wrote:
> > > phc2sys[2031.823]: lan1 sys offset 4870 s0 freq +0 delay 1875
> > > phc2sys[2032.824]: lan1 sys offset 4915 s0 freq +0 delay
> 20.07.2022 15:23 Miroslav Lichvar write:
>
>
> On Wed, Jul 20, 2022 at 03:12:39PM +0200, Jakub Raczyński wrote:
> > phc2sys[2031.823]: lan1 sys offset 4870 s0 freq +0 delay 1875
> > phc2sys[2032.824]: lan1 sys offset 4915 s0 freq +0 delay 1875
> > phc2sys[2033.824]:
On Wed, Jul 20, 2022 at 03:12:39PM +0200, Jakub Raczyński wrote:
> phc2sys[2031.823]: lan1 sys offset 4870 s0 freq +0 delay 1875
> phc2sys[2032.824]: lan1 sys offset 4915 s0 freq +0 delay 1875
> phc2sys[2033.824]: lan1 sys offset 5011 s0 freq +0 delay 1750
>
wrote:
>
>
> > 20.07.2022 13:33 Miroslav Lichvar wrote:
> >
> >
> > On Wed, Jul 20, 2022 at 12:06:43PM +0200, Jakub Raczyński wrote:
> > > I was trying to setup gPTP using linuxptp (ptp4l + phc2sys) that would
> > > allow two way synchronization using ntpd. Setup without ntpd
> > >
> 20.07.2022 13:33 Miroslav Lichvar wrote:
>
>
> On Wed, Jul 20, 2022 at 12:06:43PM +0200, Jakub Raczyński wrote:
> > I was trying to setup gPTP using linuxptp (ptp4l + phc2sys) that would
> > allow two way synchronization using ntpd. Setup without ntpd (synchronizing
> > CLOCK_REALTIME)
On Wed, Jul 20, 2022 at 12:06:43PM +0200, Jakub Raczyński wrote:
> I was trying to setup gPTP using linuxptp (ptp4l + phc2sys) that would allow
> two way synchronization using ntpd. Setup without ntpd (synchronizing
> CLOCK_REALTIME) seems to be working perfectly.
> However with ntpd is that
Greetings,
I was trying to setup gPTP using linuxptp (ptp4l + phc2sys) that would allow
two way synchronization using ntpd. Setup without ntpd (synchronizing
CLOCK_REALTIME) seems to be working perfectly.
However with ntpd is that when in network there is no external gPTP Master
On Tue, Jul 19, 2022 at 09:02:37PM -0700, Richard Cochran wrote:
> > I am not sure how accurate a software timestamp for a wifi device would
> > be, given the potential delay between timestamp and actual transmission.
>
> WiFi on Linux is never going to support PTP. The issue is the closed
>
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