Title :
The cost of variability
Author :
Ridoux, Julien ; Veitch, Darryl
Author_Institution :
EEE Dept., Univ. of Melbourne, Melbourne, VIC
Abstract :
We explore the robustness of synchronization performed in the presence of variable latencies using two software clocks: the TSCclock, designed to replace ntpd for Internet synchronisation, and ptpd, a software implementation of IEEE-1588. Using a precise comparison methodology the TSCclock is shown to be more accurate and far more robust. We discuss the reasons why and the implications for IEEE-1588 more generally.
Keywords :
IEEE standards; clocks; scheduling; synchronisation; task analysis; IEEE-1588; Internet synchronisation; TSCclock; ptpd; software clocks; Atomic clocks; Costs; Delay; Global Positioning System; IP networks; Master-slave; Monitoring; Robustness; Software performance; Synchronization; IEEE-1588; TSCclock; clock synchronization; latency; ptpd; robustness;
Conference_Titel :
Precision Clock Synchronization for Measurement, Control and Communication, 2008. ISPCS 2008. IEEE International Symposium on
Conference_Location :
Ann Arbor, MI
Print_ISBN :
978-1-4244-2274-6
Electronic_ISBN :
978-1-4244-2275-3
DOI :
10.1109/ISPCS.2008.4659208
