2021/12/22 by Joao Mario Domingos, Pedro Tomas, Domingos, Joao Mario +4 · 1 voice · 1 citation
Computer Science · #D.4.8 #FOS: Computer and information sciences #Interconnection Networks and Systems #Parallel Computing and Optimization Techniques #Performance (cs.PF) #Real-Time Systems Scheduling #cs.PF
paper · pdf · doi:10.48550/arxiv.2112.11767
openalex publication_date 2021/12/22 · arxiv published 2021/12/22 · arxiv updated 2021/12/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Increased attention to RISC-V in Cloud, Data Center, Automotive and Networking applications, has been fueling the move of RISC-V to the high-performance computing scenario. However, lack of powerful performance monitoring tools will result in poorly optimized applications and, consequently, a limited computing performance. While the RISC-V ISA already defines a hardware performance monitor (HPM), current software gives limited support for monitoring performance. In this paper we introduce extensions and modifications to the Performance analysis tools for Linux(perf/perfevents), Linux kernel, and OpenSBI, aiming to achieve full support for the RISC-V performance monitoring specification. Preliminary testing and evaluation was carried out in Linux 5.7 running on a FPGA booted CVA6 CPU, formerly named Ariane, showing a monitoring overhead of 0.283%.