Multi-Core Intra-Process Clock Synchronization

Real-time applications require not only a precise understanding of now (what time it is), but also the ability to initiate an externally visible event at the correct time. We define this as Intra-process clock synchronization. Our findings show that in the latest commercial, off-the-shelf (COTS) multi-core systems running with preempt-RT Linux, the uncertainty in the software visible clock is near...