Hi Richard, It is not per se PXE, but network load in general. When PXE booting other servers, the PXE boot server which runs as a PTP slave will have a high load of network traffic going out to the servers that are about to boot through PXE.
This high network load causes the PTP slave instance to return the message telling to increase the tx_timestamp_timeout value or it being a driver bug. To be sure it has nothing to do with PXE in specific, when copying an .iso file of ~5GB over the Ethernet connections with the maximum gigabit speeds of +-120MB/s, the PTP slave instance will stop and returns the same tx_timestamp_timeout message. This indicates clearly that high network load causes PTP to stop working, at least with the e1000e driver. The weird part at least is that PTP does not recover itself anymore after being set on hold for a minute when the tx_timestamp_timeout message appears. This completely vanishes the point of synchronising time that when network load increases the synchronisation process stops and only drifts further away instead of re-synchronising. The driver is the e1000e version 3.2.6, which is the default of Fedora 22. I have also tried versions 3.4.0.2 adn 3.4.1.1 of the e1000e driver but they also don’t seem to work. Jord > On 6 Aug 2018, at 16:58, Richard Cochran <richardcoch...@gmail.com> wrote: > > On Mon, Aug 06, 2018 at 06:40:52AM +0000, Jord Pool wrote: >> I anyone could help me out with this that would be great I am still stuck.. > > I only skimmed you previous mails, BUT... > > I don't see how PXE has anything to with it. > > What exactly is the problem with linuxptp? > > Please provide: > > config files > kernel and driver versions > logging output > expected output > > Please omit: > > anything to do with PXE > > Thanks, > Richard ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
