On Wed, Jul 4, 2012 at 9:06 PM, Kevin Chadwick <ma1l1ists@xxxxxxxxxxx> wrote: >> If you have a >> mercurial/git installation even in a small group, I am sure you'll prefer >> accurate timestamps in your commit history. And the list goes on... > > I believe an RTC is perfectly capable of that. I tried to find some data on what to expect from RTC's. I was not very successful, except finding people citing 80-100PPM as typical drift rates (~8 secs/day). Having a look at my own machine (a reasonably new Dell laptop) I don't see values quite that bad. I lose about 14 PPM, which amounts to roughly seven minutes in a year. Having that kind of discrepancies on a network doing distributed development would wreck absolute havoc. -t