1. A hard disk drive transfers data 8 bytes at a time and has a peak data rate of 8 MB/s. To make sure old data is n...
B. Ch. 5 Interrupt-driven I/O Assume that we have a hard disk that produces 220 interrupts per second when active, and assume that the disk is active 10% of the time. The overhead of interrupting the CPU and performing the transfer is 1000 clock cycles. What fraction of a 1 GHz CPU's time is spent attending to the hard disk drive?
A given disk drive has the following parameters: Average seek time of 7 ms Rotates at 6000 RPM Transfers data at 100 MB/s What is the average amount of time it takes to read one sector (512 bytes) of data? Your answer should be in seconds to three digits of precision (e.g., X.XXX s).