> -----Original Message----- > From: Norbert Lange [mailto:nolang...@gmail.com] > Sent: Thursday, February 23, 2017 2:20 AM > To: Richard Cochran <richardcoch...@gmail.com> > Cc: Keller, Jacob E <jacob.e.kel...@intel.com>; linuxptp- > us...@lists.sourceforge.net > Subject: Re: [Linuxptp-users] PTP Clock completely wrong on an Intel 82579L > > Yeah, I seen that matrix, and both NICs are on that list. Still have > some rather serious issues, one is completely useless (82579LM, e1000e > driver) and the other (i354, igb driver) apparently wraps the timer > very 18 minutes, losing their master role. > > Kind regards, > Norbert >
The igb driver is likely bugged, it should be maintaining a separate "real counter" and the internal hardware counter wrapping should be hidden from the user. Most likely in all these cases you have hardware the driver recognizes, and assumes a certain hardware frequency, but the software was not updated for the new frequency rate, so it is assuming a different internal rate which results in these problems. Hopefully one of the e1000e maintainers will be able to give more insight on the intel-wired-lan list. Thanks, Jake ------------------------------------------------------------------------------ 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
