An Iterative Benchmark Configuration Method for Quantifying Multi-Core Interference
Résumé
Interference within a multi-core architecture may have
several origins. Understanding where interference
comes from is mandatory for verification and certification
purposes. Unfortunately, the complexity of current
architectures makes it difficult to quantify such interference.
In this article, a new approach is introduced
that enables benchmark configurations to isolate and
quantify interference. An experiment with DMA interference
is presented and shows a WCET overhead of up
to 0.26% at 25 Mbit/s. This experiment was also able
to discover and identify interference related to DMA,
such as interruptive flow overhead, around 3% for 25
Mbit/s, or packet transmission memory access overhead,
around 9% for 25 Mbit/s.