%         Registration                  We're not getting any younger          
%  [2]Register/Submit Proposal Darren Vincent Hart (dvhltc@us.ibm.com)        

The Linux time subsystem, which once provided  
only tick granularity via a simple periodic    
addition to xtime, now must provide nanosecond 
resolution. As more and more unique            
timekeeping hardware becomes available, and as 
virtualization and low-latency demands grow,   
the complexity of maintenance and bug          
resolution increases.                          
                                               
This paper explores the requirements of a      
modern timing system, encompassing both        
time-keeping and hard and soft timers. We      
propose a new infrastructure to elegantly meet 
those needs and discuss how kernel interfaces  
can best be modified to use human-time units.