[Corrected - made a mistake with read IOP/ xfers]
Here is summary of device level xfer sizes measured against IOP count occurrences as captured when monitoring Black Ops Single Player. (Progressive map loading).
Read xfers
92,623 read I/O operations; total 1,772,378,112 bytes read
. Largest single I/O xfer size = 28.24 MiB (1 occurrence)
. Smallest single I/O xfer size = 512 bytes (305 occurrences).
Write xfers
6,697 write I/O operations; total 113,272,832 bytes written
. Largest single I/O xfer size = 2.75MiB (2 occurrences)
. Smallest single I/O xfer size = 512 bytes (245 occurrences).
Highest read IOP Count xfer size = 4kB (39,023 occurrences).
Highest write IOP Count xfer size = 4kB (5,018 occurrences).
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