On 2011-09-27, Miguel Gon?alves <m...@miguelgoncalves.com> wrote: > One had 180 ppm sand the other 46 ppm without fiddling with machdep.tsc_freq > sysctl variable. After the correction I am getting -0.041 ppm for the first > and -0.045 ppm for the second. > > > Embedded machines running NanoBSD and they don't do anything else besides > running NTP. They sit in a temperature controlled room at 20 ?C. Power > management has been disabled. I checked the BIOS and did not see any > reference to spectrum clocks. > Miguel:
There are a lot of links off of the leapsecond.com of home made methods that improve clock stability. I am using one of these PC clock crystal replacement boards in my Intel Atom. http://www.leapsecond.com/ptti2003/index.htm http://www.tapr.org/~n8ur/Clock-Block_Manual.pdf Installation is meant for someone with better than average soldering skills. This device replaces your motherboard clock crystal with something that is more stable. Tom -- Public Keys: PGP KeyID = 0x5F22FDC1 GnuPG KeyID = 0x620836CF _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
