Performance of File Systems
FS is dominated by number of FS accesses
- A lotttt slower than most computer operations
Transfer time is only a small part of the total access time
access time = seek time + rotational delay + transfer time
- 1 sector = 5ms + 4ms + 5
s = 9ms - 50 sectors = 5ms + 4ms + .25ms = 9.25ms
Can get 50x more data for only 3% overhead