Impact of the Linux Real-time Enhancements on the System Performances for Multi-core Intel Architectures

In this paper, we study the impact of timing enhancement offered by various real-time Linux kernel extensions and their impact into the overall system performance. The obtained results are compared with the standard and server kernels performances. We used for our study a multi-core Intel® based architecture since we considered the trend of the embedded control market for this kind of architectures. In our work we studied two metrics to reflect the performance of the studied kernel that are latency and throughput. Such work can be used to orient the adoption of real-time Linux extension for a given hardware architecture to reach control application requirements.