Kiyofumi Tanaka

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Cache memory is effective in bridging a growing speed gap between a processor and relatively slow external main memory. Almost all of today's commercial processors, not only high-performance microprocessors but embedded ones, have on-chip cache memories. However, energy consumption in the cache memory would approach or exceed 50% of the total consumption by(More)
We propose techniques for guaranteeing schedulability including RTOS runtime overhead. In the techniques, we introduce two servers with planned capacity: periodic management server for invoking periodic tasks and aperiodic management server for aperiodic events such as task completion. Then, we provide the schedulability test considering the servers'(More)
Rate monotonic (RM) and earliest deadline first (EDF) are representative scheduling algorithms for real-time periodic tasks. RM has a merit that tasks with high-priority (short-period) have small jitters and short response times. However, it is impossible that processor utilization reaches 100% while maintaining schedulability or that tasks are given(More)