Cache Memories and Real-Time Systems

摘要: The first methods to bound execution time in computer systems with cache memories were presented the late eighties — twenty years after designed. Today, fifteen later, has been developed . that state-of-theart ago. This report presents and real-time from very basics state-of-the-art of memory design, use limitations current technology. Methods handle intrinsic extrinsic behavior on instruction data caches will be discussed, but also close issues like pipelining, DMA other unpredictable hardware components briefly presented. No method is today able automatically calculate a safe tight Worst-Case Execution Time (WCETC ) for any arbitrary program runs modern high-performance system there are always cases where cross into problems. Many can although give WCETC or reduce related problems under specified circumstances.