Disk I/O, a study in shifting bottlenecks

There is a growing body of research into methods of better matching disk memory system and processor performance. It is demonstrated using a few example techniques from current research that the underlying result of this work is to move the performance bottlenecks of disk systems between the seek, latency, and data transfer phases. It is suggested that, through the use of analysis of the type illustrated, queuing network bottleneck analysis and simple simulations can accurately predict system performance enhancements