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Improving the Efficiency of Power Management via Dynamic Interrupt Management

Title
Improving the Efficiency of Power Management via Dynamic Interrupt Management
Authors
Kang, Ki DongPark, HyungwonPark, GyeongseoKim, Daehoon
DGIST Authors
Kim, Daehoon
Issue Date
2020-10-20
Citation
IEEE International Conference on Computer Design, 377-380
Type
Conference
ISBN
9781728197104
ISSN
1063-6404
Abstract
In this paper, we first analyze the effects of interrupt management on response latency of the latency-critical application and the efficiency of current dynamic power management governor which determines Voltage and Frequency States (V/F states) based on CPU utilization. We also demonstrate that interrupt management provides a governor an opportunity to decrease the V/F state without performance degradation. Next, we propose I-state that adjusts the interrupt rate based on the V/F state determined by the governor. When a core is highly utilized with a high V/F state, I-state improves response latency by decreasing interrupt rate, moderating the load on the CPU. I-state also improves energy-efficiency by making the governor decrease the V/F state more often. When a core is not highly utilized while operating at low V/F states, I-state improves response latency by increasing interrupt rate, which can notify the processor of packet arrivals faster so that the CPU processes the packets quickly. Our experimental results show that I-state improves 95th percentile latency by up to 15.9x while reducing energy consumption by up to 17.6%. © 2020 IEEE.
URI
http://hdl.handle.net/20.500.11750/12893
DOI
10.1109/ICCD50377.2020.00069
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Kim, Daehoon Computer Architecture and Systems Lab
  • Research Interests Computer Architecture and Systems; Virtualization; Cloud Computing
Files:
There are no files associated with this item.
Collection:
Department of Information and Communication EngineeringComputer Architecture and Systems Lab2. Conference Papers


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