Synchronizing Time in the Cloud
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Comparing NTP and PTP
Summary: 1. TimeKeeper synchronized clocks can be accurate to within 100 nanoseconds using either Network Time Protocol (NTP) or 1EEE 1588 Precise Time Protocol (PTP). 2. Most non-TimeKeeper implementations of NTP (such as NTPd or Chrony) are usually no better than 1millisecond in accuracy – this includes many GPS based NTP network clocks. 3. There…
2015 Leap Second
Leap seconds have caused tremendous problems with IT systems in the past. The last two, in 2012 and 2008 Download PDF