A sequential file is recorded by using blocking. A process manipulates it by using two buffers. The I/O and processing times are as follows:
Access time (average) | = 20 ms |
Transfer time per record | = 5 ms |
Largest number of records | = 5 records |
required together |
|
Processing time per record | = 10 ms |
Determine optimal values of the blocking factor and the number of buffers. What changes, if any, would you make in your design if the largest number of records that the process is likely to require together is (i) 3 records, (ii) 8 records? (Hint: See Example 14.4.)
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