The DISK_PERFORMANCE structure provides disk performance information.
typedef struct _DISK_PERFORMANCE {
LARGE_INTEGER BytesRead;
LARGE_INTEGER BytesWritten;
LARGE_INTEGER ReadTime;
LARGE_INTEGER WriteTime;
DWORD ReadCount;
DWORD WriteCount;
DWORD QueueDepth;
} DISK_PERFORMANCE ;
Members
BytesRead
Specifies the number of bytes read.
BytesWritten
Specifies the number of bytes written.
ReadTime
Specifies the time it took to complete the read.
WriteTime
Specifies the time it took to complete the write.
ReadCount
Specifies the number of read operations.
WriteCount
Specifies the number of write operations.
QueueDepth
Specifies the depth of the queue.
Remarks
The DeviceIoControl function receives a DISK_PERFORMANCE structure in response to an IOCTL_DISK_PERFORMANCE device I/O operation.
See Also