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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.
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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
DeviceIoControl, IOCTL_DISK_PERFORMANCE