time synchronization

Project Roseline

October 17, 2014 | 0 Comments

Accurate and reliable knowledge of time is fundamental to cyber-physical systems for sensing, control, performance, and energy efficient integration of computing and [...]

Cassandra

September 10, 2014 | 0 Comments

Cassandra’s unfortunate end. Cassandra is quite interesting – and time sync seems increasingly critical to correct operation. Here are some resources: A paper on [...]

Cassandra Cluster Synchronization

April 6, 2014 | 0 Comments

Cassandra is a highly-distributable NoSQL database with tunable consistency. What makes it highly distributable makes it also, in part, vulnerable: the whole deployment must [...]

Time Maps in Action

February 2, 2014 | 0 Comments

This shows a time map for a client (center) that is getting NTP time from a variety of standard internet NTP servers and via a customer site (to the left). A TimeKeeper [...]