Here's a very rough (and non-practical due to the large time error) implementation of TrueTime that I wrote a while back that uses the regular linux apis: http

Here's a very rough (and non-practical due to the large time error) implementation of TrueTime that I wrote a while back that uses the regular linux apis: https://stackoverflow.com/questions/18384883/why-is-googles-truetime-api-hard-to-duplicate https://stackoverflow.com/questions/18384883/why-is-googles-... I suppose if you spent some serious effort with ntpd (maybe hook it up to a PCI ClockCard), you could get this approach to work.