Disk Speed
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Get it written →<pclass=”msonormal” style=”box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);”>A computer has a bus with a 5-nsec cycle time, during which it can read or write a 32-bit word from memory.</pclass=”msonormal”>
The computer has an Ultra4-SCSI disk that uses the bus and runs at 160 Mbytes/sec.
<pclass=”msonormal” style=”box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);”></pclass=”msonormal”>
The CPU normally fetches and executes one 32-bit instruction ever 1 nsec. How much does the disk slow down the CPU?
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