Recent versions of Microsoft Windows OS have several key feature additions and improvements to high accuracy timekeeping for time-sensitive workloads and applications. This talk discusses the improvements to relevant Windows APIs, implementation of UTC-compliant leap seconds, software and hardware timestamping of network packets and its use in our PTP implementation, and learnings from internal tests and case studies.

Authors:
1. Sarath Madakasira, Principal Software Engineer, Microsoft Corp, SarathM@Microsoft.com
2. Keith Mange, Principal Software Engineering Lead, Microsoft Corp, KeMange@Microsoft.com