Re: [Linuxptp-users] RMS Errors Growing

[<ja...@as...>]

Miroslav,

Thanks for the suggestions-
Found chrony running so I stopped and disabled chronyd.  Still see the 
problem.
I have another older computer running RHEL 7.9 with an Asus mb and a 
I219-LM chip on the same local net and it works properly.
I tried the RHEL 8.8 OS that was not working with the Supermicro mb on 
the Asus mb with an I219-LM chip and it worked.
I tried the RHEL 8.8 OS on a third computer that has the new Supermicro 
mb with the same hardware as the original and I still saw the error.

Based on the testing steps above, the three main differences are 
motherboard, cpu and the I219-LM rev.  The working 219 chip reports rev 
10 where the one that reports an error is rev 11.  It seems like a 
driver would be the most likely problem.  A quick look at the Intel 
website indicates that the e1000e drivers have changed to a kernel-only 
support model.

Jason


On 2023-06-20 09:24, Miroslav Lichvar wrote:
> On Tue, Jun 20, 2023 at 09:05:10AM -0600, ja...@as... wrote:
>> ptp4l[1068.939]: clockcheck: clock jumped forward or running faster 
>> than
>> expected!
>> ptp4l[1068.939]: rms 630332770 max 822762571 freq +23999999 +/-   0 
>> delay
>> -27609959 +/- 3559790
> 
> This shows the frequency being stuck at the maximum. The server, HW or 
> driver
> is broken, or something else is adjusting the clock.