IOCTL_DISK_PERFORMANCE_OFF IOCTL (winioctl.h)

Disables the performance counters that provide disk performance information.

To perform this operation, call the DeviceIoControl function with the following parameters.

BOOL DeviceIoControl(
  (HANDLE) hDevice,            	// handle to device
  IOCTL_DISK_PERFORMANCE_OFF,	// dwIoControlCode
  NULL,                        	// lpInBuffer
  0,                           	// nInBufferSize
  NULL,                        	// lpOutBuffer
  0,                           	// nOutBufferSize
  (LPDWORD) lpBytesReturned,   	// number of bytes returned
  (LPOVERLAPPED) lpOverlapped  	// OVERLAPPED structure
);

Remarks

To enable these performance counters, use the IOCTL_DISK_PERFORMANCE control code.

Requirements

See also

• DeviceIoControl
• Disk Management Control Codes
• IOCTL_DISK_PERFORMANCE