Transparent and Selective Real-Time Interrupt Services for Performance Improvement

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. Key words: Real-time, Scheduling algorithm, Interrupt handling, Embedded operating systems, Latency, Throughput

• Type: Conference
• Year: 2007
• Where: SEUS
• Authors: Jinkyu Jeong, Euiseong Seo, Dongsung Kim, Jinsoo Kim, Joonwon Lee, Yung-Joon Jung, Donghwan Kim, Kanghee Kim
• Keywords: Embedded Operating Systems, Embedded Systems, Interrupt Handling, Real-time Support, SEUS 2007