Regarding Diskperf

NTDEV
1

I tried command line utility diskperf as

C:\Users\Administrator>diskperf -YV
Both Logical and Physical Disk Performance counters on this system
are automatically enabled on demand.
Raw counters are also enabled for IOCTL_DISK_PERFORMANCE.
C:\Users\Administrator>

Does perfmon send IOCTL_DISK_PERFORMANCE ioctl or Queries WMI data from the volume manager/disk driver to get “Logical Disk” / “Physical Disk” Performance Counters ?

2

MMC process runs perfmon.msc. perfdisk.dll gets loaded in MMC process.
However, MMC does not seem to be calling IOCTL_DISK_PERFORMANCE.