Adopting System Call Based Address Translation into User-Level Communication

Abstract — User-level communication alleviates the software overhead of the communication subsystem by allowing applica-tions to access the network interface directly. For that purpose, efficient address translation of virtual address to physical address is critical. In this study, we propose a system call based address translation scheme where every translation is done by the kernel instead of a translation cache on a network interface controller as in the previous cache based address translation. According to our experiments, our scheme achieves up to 4.5 % reduction in application execution time compared to the previous cache based approach. I