Transparent and selective real-time interrupt services for performance improvement

  • Authors:

  • Jinkyu Jeong;Euiseong Seo;Dongsung Kim;Jin-Soo Kim;Joonwon Lee;Yung-Joon Jung;Donghwan Kim;Kanghee Kim

  • Affiliations:

  • Dept. of CS, Korea Advanced Institute of Science and Technology;Dept. of CS, Korea Advanced Institute of Science and Technology;Dept. of CS, Korea Advanced Institute of Science and Technology;Dept. of CS, Korea Advanced Institute of Science and Technology;Dept. of CS, Korea Advanced Institute of Science and Technology;Electronics and Telecommunications Research Institute;Electronics and Telecommunications Research Institute;Samsung Electronics Co.

  • Venue:
  • SEUS'07 Proceedings of the 5th IFIP WG 10.2 international conference on Software technologies for embedded and ubiquitous systems
  • Year:
  • 2007

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Abstract

The popularity of mobile and multimedia applications made real-time support a mandatory feature for embedded operating systems. However, the current situation is that the overall performance is significantly degraded due to the real-time support. This paper suggests a novel scheme to minimize the performance degradation in embedded operating systems with real-time support. Especially, we propose transparent and selective real-time interrupt services which transparently monitor the system and postpone interrupt handling that are not relevant to real-time tasks. The proposed scheme was implemented on the Linux 2.6 kernel and the experimental results show that our scheme improves the throughput by up to 86% for Hackbench benchmark while providing almost the same scheduling latency compared to the previous work.