3 ms·

Hrmm yes a fair point. Also I see this paper suggests burning half a percent of your CPU resources for time synchronization which they wave away but I find to b

• tinktank 8y ago
  > half a percent of your CPU resources for time synchronization Why do you find that to be substantial? Given most machines are at least 50% idle, I find 0.5% to be acceptable.
  • ebikelaw 8y ago
    It's actually quite difficult to get utilization up past about 60% on average at a large scale, and when utilization increases efficiency decreases (from missed clock turbo opportunities and other microarchitectural feedback). So if you are using half a percent of your nominal capacity that's 1% of your total CPU usage. 1% is a lot at scale. For example at Google's scale that would be enough to justify a team of several full-time engineers to find a more efficient way to do it. Even saving 0.01% of CPU time is considered a pretty good outcome at large companies (Amazon, Microsoft, Facebook, ...).