> -----Original Message----- > From: Jord Pool [mailto:jord.p...@outlook.com] > Sent: Wednesday, August 08, 2018 12:00 AM > To: Keller, Jacob E <jacob.e.kel...@intel.com>; Richard Cochran > <richardcoch...@gmail.com> > Cc: Cliff Spradlin via Linuxptp-users <linuxptp-users@lists.sourceforge.net>; > Cliff > Spradlin <csprad...@waymo.com>; Chris Caudle <ch...@chriscaudle.org> > Subject: Re: PXE Boot PTP Issues > > Hi Jacob ! > > Sorry I was mistaking, I meant Red Hat instead of Fedora. The kernel version > I am > running is 3.10.0. >
That 3.10.0 isn't very useful because Red Hat backports patches. You may or may not have the patch I think might help. > After the first timeout indeed more timeouts occur, the offset shoots to 36 > seconds (always) (which makes me think it makes a mistake in handling the > TAI/UTC conversion) and after a while of returning timeout messages the offset > just drifts away and away (higher offset). > So, after the first drop, you consistently see more tx timestamp drops? or do those go away? If you're still seeing them, then I would expect them to drift apart. The 36seconds thing I think is a bug in the reset flow of the driver. It's possible that something triggers a driver reset, and since the kernel uses the UTC time, the driver is resetting to "kernel" time of day, which results in the 36seconds offset. Thanks, Jake > Jord > > ------------------------------------------------------------------------------ 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
