Here is summary of device level xfer sizes measured against IOP count occurrences as captured when monitoring OS, Word, Excel, Live Mail (with AV real time on). The OS was fully loaded before monitoring began.
Read xfers
31,299 read I/O operations; total 674,738,176 bytes read
. Largest single I/O xfer size = 1.14MiB (1 occurrence)
. Smallest single I/O xfer size = 512 bytes (303 occurrences).
Write xfers
8,645 write I/O operations; total 98,129,920 bytes written
. Largest single I/O xfer size = 2MiB (2 occurrences)
. Smallest single I/O xfer size = 512 bytes (352 occurrences).
I know from a mistake I made in post #281 that my AV generates max read xfers of 32,768 bytes so I'd guess a good percentage of 32kB reads are AV related.
Bookmarks